1/21/2016 | 2016 | Radio Holland Middle East | M44, Street 16, Mussaffah, | Abu Dhabi | U.A.E. | | | |
| 2016 | Radio Holland Belgium NV | Koralenhoeve 15E | Wommelgem | België | Verhuizing van Noorderlaan | | |
12/9/2016 | 2016 | Radio Holland Canada Inc | | | | Naamswijziging van Imtech Marine Canada naar RHC Inc | | |
8/13/2015 | 2015 | | | | | | | |
10/21/2015 | 2015 | | | | | | | |
11/5/2015 | 2015 | Radio Holland | Sluisjesdijk 155 3087AG Rotterdam | | | | | |
1/12/2012 | 2012 | | | | | | | |
9/13/2012 | 2012 | Radio Holland Netherlands | Eekhoutstraat 2 | Rotterdam | Nederland | RHNL en Imtech Marine & Offshore gaan verder onder de naam Imtech Marine Netherlands. RHNL verlaat Eekhoutstraat 2 en integreert op de Sluisjesdijk 155 | | |
11/1/2011 | 2011 | Radio Holland Group | Sluisjesdijk 155, | Rotterdam | Nederland | RHG Global management team wordt ontbonden | 11/1/2011 | |
1/1/2011 | 2011 | Sailtron BV | Voorveste | HOUTEN | Nederland | Bedrijf sluit. Jachtactiviteiten naar RHNL. Garmin gaat zelf BL markt bewerken | 1/1/2011 | |
1/4/2010 | 2010 | Radio Holland South Africa | Dompedro Jetty | Port Elzabeth | South Africa | nieuwe locatie | | |
| 2010 | Radio Holland Malaysia Sdn BHd | No 83-2 Jalan Mahogani 5, Bandar Botanik | (Port) Klang | Malaysia | verhuizing | | |
2/20/2009 | 2009 | Radio Holland South Africa | 16 Paarden Eiland Rd, Paarden Eiland | Cape Town | South Africa | RHSA moves to Pertec\’s location in Cape Town | | |
1/1/2009 | 2009 | Radio Holland UK (Imtech Marine & Offshore UK) | | Newcastle upon Tyne | UK | local service under RH branding | | |
1/15/2009 | 2009 | Radio Holland USA | | Jacksonville | USA | Seacoast Electronics changes name to RH USA | | |
| 2009 | Radio Holland China | Rm2701, JinHua B Apt bulding, 100 NanJing Rd | Qingdao | P.R. of China | nieuwe locatie | | |
4/7/2009 | 2009 | Radio Holland USA | | Oakland Ca | USA | nieuwe locatie | | |
| 2009 | Radio Holland China Ltd | Room 501 No1 Lane, Bi Sheng Rd | Shanghai | P.R. of China | verhuizing | | |
| 2009 | Radio Holland South Africa | Unit 1E, Umgeni Business Park, 35 Interstate Ave. | Durban | South Africa | verhuizing (samenvoeging Pertec en RHSA Durbvan offices) | | |
| 2008 | Radio Holland Norway A/S | | Bergen | Norway | nieuwe locatie | | |
1/31/2008 | 2008 | Pertec (Pty) Ltd S.A. | 16 Paarden Eiland Rd, Paarden Eiland | Cape Town | South Africa | overname | | |
1/31/2008 | 2008 | Pertec (Pty) Ltd S.A. | | St Helena Bay | South Africa | overname | | |
1/31/2008 | 2008 | Pertec (Pty) Ltd S.A. | | Mossel Bay | South Africa | overname | | |
| 2008 | Pertec (Pty) Ltd S.A. | | Johannesburg | South Africa | overname | | |
1/31/2008 | 2008 | Pertec (Pty) Ltd S.A. | | Durban | South Africa | overname | | |
| 2008 | Radio Holland Canada | 2 Cushman Road Unit 5 | St Catharines/Ontario | Canada | nieuwe locatie | | |
| 2008 | Radio Holland Canada | 655 Jean Paul Vincent, Unit 21 | Longueuil,/ Quebec | Canada | nieuwe locatie | | |
5/15/2008 | 2008 | Radio Holland Panama | Calle ArnulfoAria Madrid, Edif 42D | Balboa Ancon Diablo | Panama | nieuwe locatie | | |
10/6/2008 | 2008 | | | | | | | |
| 2008 | Radio Holland HongKong | Representive office, Ngo Quyen Str. Hoan Kiem Dist. | Hanoi | Vietnam | nieuwe locatie | | |
12/8/2008 | 2008 | Radio Holland Group | Sluisjesdijk 155, | Rotterdam | Nederland | verhuizing vanuit de Westerlaan1 | | |
| 2008 | Seacoast Electronics Inc. | | Jacksonville | USA | locations in New Orleans Mobile, Norfolk and Seattle combined with the local RH USA offices | | |
3/23/2007 | 2007 | Radio Holland China | Room 101, No15 Lane 299, Bi Sheng Rd | Shanghai | P.R. of China | verhuizing | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | Jacksonville/FL | USA | overname | | |
| 2007 | Radio Holland Trinidad & Tobago Ltd | Atlantic Plaza, Unit 2.01 | Point Lisas | Trinidad & Tobago | verhuizing | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | Tampa/FL | USA | overname | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | New Orleans/LA | USA | overname | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | Mobile/AL | USA | overname | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | Norfolk/VA | USA | overname | | |
3/5/2007 | 2007 | Seacoast Electronics Inc. | | Seattle/Wa | USA | overname | | |
5/9/2006 | 2006 | | | | | | | |
8/8/2006 | 2006 | Radio Holland Trinidad & Tobago Ltd | #3 Mulchan Seuchan Rd | Chaguanas | Trinidad & Tobago | nieuwe locatie | | |
| 2006 | Radio Holland China | Room 1602-1603 LT Square No 500 Cheng du Road | Shanghai | P.R. of China | naamswijziging; niet langer onder RH HongKong | | |
| 2006 | Radio Holland South Africa | 31 Section Street Paarden Eiland | Cape Town | South Africa | | | |
3/1/2005 | 2005 | Radio Holland USA | | Jacksonville/FL | USA | nieuwe locatie | | |
| 2005 | Radio Holland Hong Kong | | Tianjin | P.R. of China | nieuwe locatie | | |
11/14/2005 | 2005 | Radio Holland Egypt SA | 24 Syria Street Dr Morrison str. Roushdy | Alexandria | Egypt | verhuizing en naamswijziging van Suez Electronics | | |
12/22/2005 | 2005 | Radio Holland Mexico | Loma do Oro 516, Loimas de Rosales | Tampico | Mexico | verhuizing | | |
12/31/2005 | 2005 | Radio Holland Mexico | Loma do Oro 516, Loimas de Rosales | Tampico | Mexico | activiteiten gestopt | | |
1/1/2004 | 2004 | Radio Holland Norway A/S | Ostre Akervei 19 | Oslo | Norway | Naamswijziging | | |
2/26/2004 | 2004 | Radio Holland Malaysia Sdn Bhd | Jalan Pukal, Johor Port | Pasir Gudang | Malaysia | | | |
6/6/2004 | 2004 | Radio Holland Middle East | Floors 1&2, Al Buhairah Corniche Road | Sharjah | U.A.E. | Verhuizing | | |
6/2/2004 | 2004 | Radio Holland Portugal S.A. | Avenida 24 de Julho 60-1 | Lissabon | Portugal | Naamswijziging | | |
8/24/2004 | 2004 | Radio Holland Aruba | | Oranjestad | Aruba | nieuwe vestiging | | |
9/28/2004 | 2004 | Radio Holland Germany | Hellgrundweg 109 | Hamburg | Duitsland | naamwijzing van S+L Marine Service GmbH en toename tot 80% participatie | | |
| 2004 | Radio Holland Germany | | Rostock | Duitsland | | | |
| 2004 | Radio Holland Greece | 17-19 Cravias Street | Piraeus | Greece | verhuizing | | |
11/9/2004 | 2004 | Radio Holland Hong Kong | 93 Linhe Xi Road, Tianhe | Guangzhou | P.R. of China | verhuizing | | |
12/7/2004 | 2004 | Radio Holland Netherlands B.V | Strandweg 6 | Ijmuiden | Nederland | verhuizing | | |
12/15/2004 | 2004 | Radio Holland USA | 3015 Greene Street | Hollywood/FL | USA | verhuizing | | |
4/7/2003 | 2003 | | | | | Oprichting | | |
6/1/2003 | 2003 | Radio Holland Netherlands B.V | Eekhoutstraat 2 | Rotterdam | Nederland | Naamswijziging | 9/13/2012 | |
3/27/2003 | 2003 | Radio Holland Curacao NV | Cruise Terminal Bldg, Motet werf z/n | Willemstad | Curacao | nieuwe start in Caribbean | | |
6/1/2003 | 2003 | Radio Holland Netherlands | Eekhoutstraat 2 | Rotterdam | Nederland | Naamswijziging | 9/13/2012 | |
6/14/2002 | 2002 | | | | | | | |
6/14/2002 | 2002 | Radio Holland Belgium N.V. | Noordersingel 17 | Antwerpen | België | nieuwe naam en verhuizing naar nieuw pand, branch in Zeebrugge | | |
6/14/2002 | 2002 | Suez Electronics | 42 Saad Zaghloul St. | Alexandria | Egypt | branches in Cairo, Port Said, Suez &Hurghada | | |
6/14/2002 | 2002 | Sema Electronicas | Avenida 24 de Julho 60-1 | Lissabon | Portugal | branches in Aveiro en Matosinhos | | |
6/14/2002 | 2002 | Skanti Norway | Ostre Akervei 19 | Oslo | Norway | | | |
6/14/2002 | 2002 | SAIT Greece | 23, Agios Spiridonos St | Athens | Greece | | | |
6/14/2002 | 2002 | Radio Holland Hong Kong | 806 Join-In, Hang Sing Centre 71-75, | Hong Kong | Hong Kong | Branches in Shanghai & Dalian | | |
6/14/2002 | 2002 | Radio Holland Marine B.V | Eekhoutstraat 2 | Rotterdam | Nederland | Branches in Delfzijl, Lauwersoog, Harlingen, Den Helder, Ijmuiden, Rotterdam, Stellendam, Urk en Vlissingen | 6/1/2003 | |
6/14/2002 | 2002 | Sailtron BV | Voorveste 2 | Houten | Nederland | | | |
6/14/2002 | 2002 | NTB Venteville | Sluisjesdijk 191 | Rotterdam | Nederland | | | |
6/14/2002 | 2002 | Radio Holland Singapore | 8 Tuas Avenue 12 | Singapore | Singapore | | | |
6/14/2002 | 2002 | Radio Holland South Africa | 306 Gale Street | Durban | South Africa | Branch in Cape Town | | |
6/14/2002 | 2002 | Radio Holland USA BV | 8943 Gulf Freeway | Houston TX | USA | Branches New York/NJ. Norfolk/VA, Hollywood/FL, Mobile/Al, New Orleans/LA, Corpus Christi/TX, Long Beach/CA, Seattle/WA, Vera Cruz?Mexico | | |
| 2002 | Radio Holland Mexico | Blvd. M.Avila Camacho 395 | Veracruxz | Mexico | | | |
6/14/2002 | 2002 | Radio Holland Canada | 3681 East 1st Avenue | Vancouver BC | Canada | branch Halifax | | |
6/14/2002 | 2002 | Radio Holland Middle East | Lamnalco Base | Sharjah | U.A.E. | Branch in Abu Dhabi | | |
9/1/2002 | 2002 | Radio Holland Connect BV | Eekhoutstraat 2 | Rotterdam | Nederland | Airtime activiteit opgestart | | |
6/14/2002 | 2002 | Radio Holland Canada | 40 Elaine Ave, Prospect Bay, | Halifax N.S. | Canada | nieuwe locatie | | |
6/14/2002 | 2002 | Radio Holland Hong Kong | 93 Linhe Xi Road, Tianhe | Guangzhou | P.R. of China | nieuwe locatie | | |
11/1/2002 | 2002 | Radio Holland Canada | 40 Elaine Ave., Prospect Bay, N.S., B3T 1Z5 | Halifax N.S. | Canada | nieuwe locatie | | |
12/31/2001 | 2001 | Radio Holland Terneuzen | | Terneuzen | Nederland | kantoor gesloten | 12/31/2001 | |
| 2000 | NTB Venteville | Sluisjesdijk 191 | Rotterdam | Nederland | VerhuiZIng vanuit Annastraat | | |
| 2000 | Radio-Holland Video Televison | Jan Rebelstraat 14 | Amsterdam | Nederland | RHVT activiteiten gestopt. Hardware naar RHMarine | | |
10/31/2000 | 2000 | Sailtron BV | Voorveste 2 | Houten | Nederland | Verhuizing vanuit Utrecht | | |
| 2000 | Radio Holland USA BV | | Vera Cruz | Mexico | | | |
| 2000 | Radio Holland Content@Sea | | Leimuiden | Nederland | Continuering van video cassette service | | |
12/1/1999 | 1999 | Radio Holland de Venezuela SA | Avenida Falcon, Edificio Mayuli Local 2 | Caracas | Venezuela | wordt afgestoten; wordt Radio Maritima de Venezuela | 12/1/1999 | |
12/1/1999 | 1999 | | | | | | | |
| 1997 | Radio Holland China | | Shanghai | P.R. of China | service depot | | |
10/21/1996 | 1996 | Radio Holland B.V. | Jan Rebelstraat 20 | Amsterdam | Nederland | | | |
10/21/1996 | 1996 | Divisie: Radio Holland Marine | Eekhoutstraat 2 | Rotterdam | Nederland | incl. Communications | | |
| 1994 | Radio Holland South Africa | 306 Gale Street | Durban | South Africa | Hoofdkantoor functie gaat naar Durban | | |
11/1/1994 | 1994 | Service groep Bedrijfselectronica | | Ijmuiden | Nederland | Activiteiten overgedaan aan Varel Security | 11/1/1994 | |
| 1994 | Afd Geodesie van RHE | | Amsterdam | Nederland | MBO HH Schuringa en vervolg in GEOmetius bv | | |
3/22/1993 | 1993 | | | | | | | |
3/22/1993 | 1993 | Radio Holland Electronics BV | Jan Rebelstraat 20 | Amsterdam | Nederland | | 10/21/1996 | |
3/22/1993 | 1993 | Radio Holland Communications | Eekhoutstraat 2 | Rotterdam | Nederland | | 10/21/1996 | |
3/22/1993 | 1993 | Radio Holland Marine B.V | Eekhoutstraat 2 | Rotterdam | Nederland | | 10/21/1996 | |
3/1/1992 | 1992 | Nautisch Instrumentenhandel L.J. Harri B.V | Jan Rebelstraat 14 | Amsterdam-Osdorp | Nederland | verkocht | 3/1/1992 | |
4/16/1992 | 1992 | | | | | | | |
3/1/1992 | 1992 | Harri Trading | Eekhoutstraat 2 | Rotterdam | Nederland | zeekaarten verkoop en correcties | | |
| 1992 | Marine Information Technology (MIT) | | Ijmuiden | Nederland | gaat verder als Caris BV te Enschede | 10/15/1994 | |
9/15/1992 | 1992 | Radio Holland B.V. | 8A Tuas Avenue 12 | Singapore | Singapore | | | |
10/20/1992 | 1992 | Radio Holland Cellular Services | | Amsterdam | | Consortium met oa ABN/AMRO voor 2e GSM licentie | | |
| 1991 | RHG South Africa | Paarden Eiland | Cape Town | South Africa | Naamswijzing van MEC naar RH SA | | |
1/9/1991 | 1991 | North-Western Shipping Company | | Leningrad | Russia | contract on technical cooperation | | |
| 1991 | Radio Holland de Venezuela SA | Avenida Falcon, Edificio Mayuli Local 2 | Pto Cabello | Venezuela | nieuwe locatie | | |
| 1991 | Radio Holland Middle East | Lamnalco Base | Sharjah | U.A.E. | | | |
1/1/1991 | 1991 | E.E.S.V. Scheldecom | | Vlissingen | Nederland | onderhoudscombinatie Schelde VTS | | |
| 1990 | Sailtron BV | 36 Boulevard de Maréchal Foch | Antibes | France | | | |
| 1990 | Nautisch Instrumentenhandel L.J. Harri B.V | Eekhoutstraat 2 | Rotterdam | Nederland | neven vestiging | | |
| 1990 | Marine Systems | | Harfleur/Le Havre | France | deelname | | |
| 1990 | Marine Systems | | Boulogne-sur-Mer | France | service depot | | |
| 1990 | Marine Systems | | Brest | France | service depot | | |
| 1990 | Marine Systems | | Duinkerken | France | service depot | | |
| 1990 | Marine Systems | | Marseille | France | service depot | | |
| 1990 | Marine Systems | | Saint Nazaire | France | service depot | | |
| 1990 | S+L Hamburg | | Hamburg | Duitsland | 40% participatie, 20% Tokyo Keiki, 20% Slachcinski | | |
7/1/1990 | 1990 | Radio-Holland Canada | 304-A Harbour , North Vancouver | Vancouver BC | Canada | | | |
8/1/1990 | 1990 | CRAME | Barajas Park C/La Rioja, s/n | Madrid | Spain | veerhuizing | | |
10/1/1990 | 1990 | Radio-Holland Canada | 4509 Rue Levy, Ville St. Laurent | Montreal | Canada | | | |
| 1990 | Engel & Meier | Deutsche binnenreederij, Alt Stralau 55-58 | Berlijn | Duitsland | | | |
| 1990 | Engel & Meier | Wittenbergerstrasse 59 | Magdenburg | Duitsland | | | |
1/1/1989 | 1989 | | | | | | | |
1/1/1989 | 1989 | RHG, E.S., Divisie Marine | Eekhoutstraat 2 | Rotterdam | Nederland | | | |
1/2/1989 | 1989 | RHG, E.S.,Divisie Land | Jan Rebelstraat 14 | Amsterdam | Nederland | | | |
1/3/1989 | 1989 | RHG, E.S.,Divisie Defense | Jan Rebelstraat 20 | Amsterdam | Nederland | | | |
1/1/1989 | 1989 | Radio-Holland Hong Kong | Shop B7 Marina Cove Shopping Centre | Kowloon | Hong Kong | jachten shop | | |
2/1/1989 | 1989 | Standard Marine A/S | Ostmarkun-25 | Oslo | Norway | 39,4% participatie | | |
| 1989 | Radio Holland USA BV | | Valdez/Alaska | USA | tijdelijk tijdens ramp Exxon Valdez | | |
11/1/1989 | 1989 | Radio Holland USA BV | 504 East 3rd Street, Lynn Haven | Panama City/FL | USA | | | |
11/1/1989 | 1989 | CRAME | | Madrid | Spain | 24 vestigingen | | |
3/1/1988 | 1988 | RH Communications (Malaysia) Sdn BHd | No 95A 1st Floor Jalan SS 15/5A Subong Jaya | Kuala Lumpur | Malaysia | | | |
6/1/1988 | 1988 | Radio-Holland Hong Kong | | Aberdeen | Hong Kong | depot tbv visserij | | |
6/1/1988 | 1988 | Radio Holland USA Inc | | Portland/OR | USA | service depot | | |
6/1/1988 | 1988 | PI Vlissingen | Stationsplein 11 | Vlissingen | Nederland | verhuizing | | |
| 1988 | Nautisch Instrumentenhandel L.J. Harri B.V | Jan Rebelstraat 14 | Amsterdam-Osdorp | Nederland | verhuizing hoofdactivitieiten | | |
6/1/1988 | 1988 | Radio Holland USA BV | 309 Oyster Lane, | Virginia Beach/VA | USA | | | |
6/15/1988 | 1988 | Radio Holland USA BV | 2703 Avenger Drive | Virginia Beach/VA | USA | | | |
6/15/1988 | 1988 | RH Defense Inc | 2704 Avenger Drive | Virginia Beach/VA | USA | | | |
7/1/1988 | 1988 | Radio Holland USA BV | | Seattle/WA | USA | service depot | | |
3/1/1988 | 1988 | Engel & Meier | Alte Heerstrasse | Skt Goar | Duitsland | 60% participatie | | |
5/1/1988 | 1988 | Radio Holland USA BV | 1509 SW 1st Avenue | Ft Lauderdale/FL | USA | verhuizing | | |
10/1/1988 | 1988 | Engel & Meier | Hafenstrasse 58 | Duisburg | Duitsland | service depot | | |
7/7/1988 | 1988 | Radio Holland USA BV | 1552 Beach Street Suite F | Oakland/S Francisco | USA | | | |
| 1988 | Radio Holland USA BV | 90 Route 22 West, Springfield/NJ | New York | USA | verhuizing | | |
| 1988 | Suez Electronics (head office) | | Alexandria | Egypt | joint venture met IMCG Kuwait, 49% belang | | |
| 1988 | Suez Electronics | | Alexandria | Egypt | service depot | | |
| 1988 | Suez Electronics | | Port Said | Egypt | service depot | | |
| 1988 | Suez Electronics | | Suez | Egypt | service depot | | |
| 1988 | Radio Holland USA BV | 8953 Gulf Freeway | Houston TX | USA | verhuizing | | |
| 1988 | Radio Holland USA BV | 500 South 31st Str. Kenilworth NJ | New York | USA | verhuizing | | |
| 1987 | Marine Electronics Corporation (Pty) Ltd | Paarden Eiland | Cape Town | South Africa | verhuizing | | |
4/1/1987 | 1987 | Radio-Holland B.V. (Maritieme Activiteiten) | Eekhoutstraat 2 | Rotterdam | Nederland | verhuzing van Osdorp naar Rotterdam | | |
| 1987 | Radio Holland USA BV | | Long Beach | USA | | | |
| 1987 | Radio Holland USA BV | Walnut Creek | San Francisco | USA | | | |
| 1987 | PI Lauwersoog | | Lauwersoog | Nederland | | | |
3/15/1985 | 1987 | RH Communications (Malaysia) Sdn BHd | Jalan Kawat Batus 3 | Kuala Lumpur | Malaysia | ism Sri Timang (Malaysia) Sdn BHd | | |
1/1/1986 | 1986 | Radio Holland Survey Equipment | Trawlerkade 64 | IJmuiden | Nederland | | | |
| 1986 | Radio Holland USA BV | 6033 South Loop East | Houston TX | USA | verhuizing | | |
| 1986 | Harri Trading | Trawlerkade | Ijmuiden | Nederland | zeekaarten verkoop en correcties | | |
10/4/1985 | 1985 | PI Den Helder | Nieuwe Diep 34A | Den Helder | Nederland | | | |
| 1984 | C.V. Dwi Junggal Djaja | Jalan Pintu Air Raya 9 | Djakarta | Indonesia | samenwerkingsverband opgezet | | |
10/1/1984 | 1984 | Radio Holland USA Inc | One Allen Center, Suite 1000 | Houston TX | USA | geliquideerd | | |
10/1/1984 | 1984 | Radio Holland USA BV | One Allen Center, Suite 1000 | Houston TX | USA | nieuwe bedrijfsnaam | | |
| 1984 | C.V. Dwi Junggal Djaja | Jalan Pintu Air Raya 9 | Djakarta | Indonesia | samenwerking wordt beeindigd | | |
| 1984 | Suez Electronics Engineering & Trading | | Cairo | Egypt | | | |
| 1984 | Radio Holland Middle East | Lamnalco Base | Sharjah | U.A.E. | | | |
| 1984 | PI Terneuzen | | Terneuzen | Nederland | | | |
| 1984 | Marine Electronics Corporation (Pty) Ltd | | Cape Town | South Africa | Naamswijziging vanwege lokale politiek | | |
| 1983 | Radio-Holland Hong Kong | 806 Join-In, Hang Sing Centre 71-75, | Kwai Chung N.T. | Hong Kong | | | |
| 1983 | Radio-Holland South Africa | 14 Nieshout St. Tygerberg Hills, Belville | Cape Town | South Africa | | | |
1/1/1983 | 1983 | Nautisch Instrumentenhandel L.J. Harri B.V | Schreierstoren | Amsterdam | Nederland | | | |
4/1/1983 | 1983 | Radio-Holland South Africa | Edgemead 7407 | Cape Town | South Africa | | | |
1/15/1982 | 1982 | Radio-Holland USA Inc (Raholinc Corp) | One Allen Center, Suite 1000 | Houston TX | USA | | | |
3/24/1982 | 1982 | Radio-Holland (Texas) Inc (Rahotex Inc) | One Allen Center, Suite 1000 | Houston TX | USA | | | |
4/1/1982 | 1982 | Nautisch Instrumentenhandel L.J. Harri B.V | Prins Hendrikkade 90 | Amsterdam | Nederland | | | |
5/19/1982 | 1982 | Southern Communications Co | | Houston TX | USA | overname door Rahotex Inc | | |
5/19/1982 | 1982 | RCA Service Company | | Philadelphia | USA | overname 6 lokaties | | |
5/19/1982 | 1982 | Radio Holland Eastern (USA) | 102 Gaither Drive, Mt Laurel | Philadelphia | USA | ex RCA vestiging | | |
5/19/1982 | 1982 | Radio Holland Eastern (USA) | 43 Edward J. Heart Road, Jersey City | New York | USA | ex RCA vestiging | | |
5/19/1982 | 1982 | Radio Holland Eastern (USA) | 3900 Colley Avenue | Norfolk/VA | USA | ex RCA vestiging | | |
5/19/1982 | 1982 | Radio Holland Eastern (USA) | 701A South Conception | Mobile/AL | USA | ex RCA vestiging | | |
5/19/1982 | 1982 | Radio Holland Eastern (USA) | 43 West Bank Expressway, Gretna | New Orleans | USA | ex RCA vestiging | | |
5/19/1982 | 1982 | Radio-Holland USA Inc | 1023 South Dalles Street | Houston TX | USA | ex RCA vestiging | | |
8/1/1982 | 1982 | Radio-Holland USA Inc | Building 16, Suite 1 Port Everglades | Ft Lauderdale/FL | USA | naamwijziging | | |
7/1/1982 | 1982 | Radio-Holland USA Inc | 5333 Everthart Road, Suite 1175C | Corpus Christi/TX | USA | | 2008 | |
5/19/1982 | 1982 | Radio-Holland USA Inc | 43 Edward J. Heart Road, Jersey City | New York | USA | | | |
11/1/1982 | 1982 | Radio-Holland USA Inc | Harahan | New Orleans | USA | | | |
10/1/1982 | 1982 | Radio-Holland USA Inc | One Allen Center, Suite 1000 | Houston TX | USA | | | |
10/15/1982 | 1982 | Radio-Holland Hong Kong | Sincere Building 22F, 173 Des Voeux Rd | Hong Kong | Hong Kong | | | |
12/29/1982 | 1982 | Radio-Holland USA Inc (Raholinc Corp) | One Allen Center, Suite 1000 | Houston TX | USA | fusie Rahotex. RH Eastern en Raholinc Corp | | |
3/1/1982 | 1982 | PI Urk | Westhavenkade 32 | Urk | Nederland | | | |
10/1/1982 | 1982 | RH Communications (Malaysia) Sdn BHd | Jalan Kawat Batus 3 | Kuala Lumpur | Malaysia | | | |
12/1/1982 | 1982 | Service groep Bedrijfselectronica | Trawlerkade 64 | IJmuiden | Nederland | | | |
12/1/1982 | 1982 | Binnenvaart Groep | Eekhoutstraat 2 | Rotterdam | Nederland | | | |
| 1982 | Shanghai Marine Telcom Nav Aid Comp | 29 Chang Yang Road | Shanghai | P.R. of China | | | |
| 1982 | Servicio Electronico Antilliano (SETEL) | | Kralendijk | Bonaire | | | |
| 1981 | Equipex-Radioholland SA | Avenida Elice, Chacao Apart. 687 | Caracas | Venezuela | verhuizing hoofdkantoor | | |
4/1/1981 | 1981 | Equipex-Radioholland SA | Calle 26, No 5-18, Rancho Grande | Pt Cabello | Venezuela | | | |
5/1/1981 | 1981 | PI Harlingen | Nieuwe Vissershaven 11 | Harlingen | Nederland | verhuizing | | |
1/22/1979 | 1981 | Radio-Holland MarineTelevison BV | Jan Rebelstraat 14 | Amsterdam-Osdorp | Nederland | naamwijziging RHMT | | |
| 1981 | Becker Telecommunicatie Industrie | | Zeist | Nederland | overname | | |
| 1980 | Surtel-Radioholland | Grote Hofstraat 7 | Paramaribo | Suriname | participatie beeindigd | | |
10/1/1980 | 1980 | Sailtron BV | Dr. Lelykade 70 | Scheveningen | Nederland | | | |
1/1/1979 | 1979 | Hulp-PI Durban | Brighton Beach, 211 Glenardle Rd | Durban | South Africa | gesloten | | |
| 1979 | Equipex-Radioholland SA | Calle 10, Oeste 8 | Judibana | Venezuela | | | |
12/1/1978 | 1978 | Radio-Holland Caribbean NV | Bernhardstraat 113 | San Nicolas | Aruba | | | |
3/10/1978 | 1978 | Radio-Holland Aruba NV | Bernhardstraat 113 | San Nicolas | Aruba | | | |
| 1978 | Electroship-Electronica Naval Comercia e Industria Limitadat Brasil | | | Brasil | 6,8% participatie | | |
| 1978 | Radio-Holland (Malaysia) Sdn BHd | c/o Hilton hotel,Jalan Sultan Ismail | Kuala Lumpur | Malaysia | 50% participatie | | |
4/12/1977 | 1977 | Radio-Holland Caribbean NV | Plettterijweg z/n | Parera | Curacao | Officiële opening | | |
10/6/1977 | 1977 | PI Rotterdam | Eekhoutstraat 2 | Rotterdam | Nederland | Nieuwbouw (gebouw B) | | |
12/31/1977 | 1977 | PI Amsterdam | Levantkade 6 | Amsterdam | Nederland | gesloten en over maar PI Ymuiden dat vanaf nu RH Ymond wordt | | |
11/1/1977 | 1977 | Radio-Holland Caribbean NV | Pletterijweg z/n | Parera | Curacao | verhuizing | | |
| 1976 | NTB Venteville | Sint Annastraat | Rotterdam | Nederland | | | |
| 1976 | Radio-Holland Marine Television BV | Jan Rebelstraat 14 | Amsterdam | Nederland | | | |
2/1/1976 | 1976 | Radio Holland de Venezuela SA | | Maracaibo | Venezuela | overname Equipex SA | | |
6/1/1976 | 1976 | Equipex-Radioholland SA | Apartado 1192 | Maracaibo | Venezuela | 50% participatie | | |
| 1976 | Bedrijfsgroep Mobilofie | Jan Rebelstraat 20 | Amsterdam | Nederland | | | |
8/30/1975 | 1976 | Radio-Holland Caribbean NV | Emmalaan 16 | Emmastad | Curacao | verhuizing | | |
6/1/1976 | 1976 | Radio-Holland Caribbean NV | Breedestraat 1 | Kralendijk | Bonaire | | | |
7/28/1976 | 1976 | Radio-Holland Video Television BV | Jan Rebelstraat 14 | Amsterdam | Nederland | | | |
8/17/1976 | 1976 | Radio-Holland International N.V. | Pletterijweg z/n | Parera | Curacao | oprichting | | Inter-com 1Jno1 |
| 1976 | Radio Holland Brazil | | Rio de janeiro | Brasil | | | |
1/1/1975 | 1975 | PI Harlingen | Galjoenweg 166 | Harlingen | Nederland | | | |
6/1/1975 | 1975 | PI Harlingen | Havenweg 7 | Harlingen | Nederland | | | |
9/1/1975 | 1975 | PI Harlingen | Zeeweg 7 | Harlingen | Nederland | | | |
1/1/1975 | 1975 | Radio-Holland Caribbean NV | Concordiaweg 30 | Willemstad | Curacao | Aruba, St Maarten | | |
| 1975 | Suez Electronics | | Cairo | Egypt | | | |
6/1/1975 | 1975 | Radio-Holland Caribbean NV | Lagoweg 36 | San Nicolas | Aruba | | | |
12/1/1975 | 1975 | Radio-Holland Singapore | Hagemeyer Complex, 900 Dunearn Rd | Singapore | Singapore | | | |
| 1974 | Radio-Holland Caribbean NV | Dr de Ruyterkade 5 | Willemstad | Curacao | naamswijziging in aparte NV | | |
| 1974 | Sailtron BV | Croeselaan 163 | Utrecht | Nederland | verhuizing | | |
| 1974 | PI Aruba | Helfrichstraat 5 | San Nicolas | Aruba | | | |
11/8/1972 | 1973 | | | | | | | |
10/10/1973 | 1973 | Sailtron Marine Systems | | Antibes | France | | | |
4/1/1973 | 1973 | PI Harlingen | | Harlingen | Nederland | agentschap \”Het Anker | | |
11/8/1972 | 1972 | | | | | | | |
| 1972 | Sailtron BV | Oost Handelskade | Amsterdam | Nederland | | | |
6/12/1971 | 1971 | RH St Maarten | Gronddove Rd 19 | Philipsburg | St. Maarten | | | |
9/1/1971 | 1971 | Hulp-PI Durban | Brighton Beach, 211 Glenardle Rd | Durban | South Africa | | | |
| 1971 | PI Curacao | Concordiaweg 30 | Willemstad | Curacao | nieuw pand | | |
10/3/1970 | 1970 | Surtel-Radioholland | Grote Hofstraat 7 | Paramaribo | Suriname | | | |
9/30/1968 | 1968 | Techniek.logistiek en magazijn Hoofdkantoor | Jan Rebelstraat 14 | Amsterdam | Nederland | Osdorp locatie | | |
9/30/1968 | 1968 | HKT Technische Dienst en magazijn | Jan Rebelstraat 14 | Amsterdam-Osdorp | Nederland | opening | | |
| 1967 | PI Hong Kong | | Hong Kong | Hong Kong | gesloten | | |
| 1967 | PI Vlissingen | Dr Stavermanstraat 61/63 | Vlissingen | Nederland | | | |
12/1/1966 | 1966 | Stichting Belangen Personeel RH | | Amsterdam | Nederland | | | |
| 1966 | Hulp PI Vlaardingen | | Vlaardingen | Nederland | gesloten. Werk via Scheveningen | | |
| 1965 | PI Delfzijl | Zijlvest 12 | Delfzijl | Nederland | | | |
| 1965 | PI New York | | New York | USA | gesloten | | |
| 1964 | Hulp PI Vlaardingen | Zeevishal | Vlaardingen | Nederland | | | |
| 1964 | Stichting tot bevordering van de opleiding van Radio Officieren | | Amsterdam | Nederland | | | |
9/1/1964 | 1964 | PI Curacao | de Ruyterkade 5 | Willemstad | Curacao | verhuizing | | |
| 1964 | RH Aruba | Savaneta 272 | San Nicolas | Aruba | | | |
| 1962 | PI Hong Kong | North Point Warf Ltd | Hong Kong | Hong Kong | nieuwe locatie | | |
| 1959 | Magazijn HKT Wittenburg | 3e Wittenburgerdwarsstraat | Amsterdam | Nederland | | | |
| 1959 | Magazijn HKT | Kerkstraat | Amsterdam | Nederland | Nieuwbouw (magazijn/garange | | |
| 1958 | PI Hong Kong | Central Building 13th floor | Hong Kong | Hong Kong | nieuwe locatie | | |
9/1/1957 | 1957 | RH Singapore | KPM building 5th fl, Finlayson 1 | Singapore | Singapore | verhuizing vanuit Tandjong priok | | |
| 1957 | PI Vlissingen | Spuistraat | Vlissingen | Nederland | | | |
11/7/1956 | 1956 | Hulp PI Den Helder | Binnenhaven 52 | Den Helder | Nederland | | | |
6/1/1955 | 1955 | PI Curacao | Rouvilleweg | Willemstad | Curacao | | | |
6/3/1953 | 1953 | Hulp PI Singapore | | Singapore | Singapore | geopend | | |
| 1953 | PI Rotterdam | Eekhoutstraat 2 | Rotterdam | Nederland | | | |
5/16/1951 | 1951 | | | | | | | |
| 1951 | PI Scheveningen | Lelykade 68/70 | Scheveningen | Nederland | nieuwbouw | | |
| 1950 | PI IJmuiden | Trawlerkade 98 | IJmuiden | Nederland | nieuwe locatie | | |
| 1950 | PI Delfzijl | Zijlvest 12 | Delfzijl | Nederland | nieuwe locatie | | |
| 1949 | PI Delfzijl | Oude Eemskanaal | Delfzijl | Nederland | | | |
| 1949 | PI Hong Kong | Shell House, Queen\’s Rd Central | Hong Kong | Hong Kong | nieuwe locatie | | |
7/16/1946 | 1946 | | | | | | | |
12/15/1945 | 1945 | Hoofd inspectie RH London | Eaton Square 109 | London | Uk | 31-7-1946 gesloten | | |
12/1/1944 | 1944 | PI San Francisco | 214, Front Street | San Francisco | USA | | | |
2/10/1943 | 1943 | PI Sydney | 47 York Street | Sydney NSW | Australië | KPM hoofdkantoor verplaatst naar Sydbey | | |
6/24/1943 | 1943 | | | | | | | |
3/1/1942 | 1942 | | | | | | | |
3/25/1942 | 1942 | Hoofd inspectie RH London | Lennox House, Norfolk Street | London | UK | | | |
3/25/1941 | 1941 | Hoofd inspectie RH London | Oswaldestre House, 34-35 Norfolk Street | London | UK | | | |
4/1/1941 | 1941 | PI New York | 2 Rector Street | New York | USA | nieuwe locatie | | |
6/24/1940 | 1940 | | | | | | | |
5/17/1940 | 1940 | Hoofd inspectie RH London | Electra House | London | UK | | | |
| 1940 | PI Rotterdam | Parallelweg | Rotterdam | Nederland | | | |
| 1938 | ANIFILM | | Batavia | Ned. Indië | deelname in syndicaat, bedrijf in 1939 gesloten | 1939 | |
| 1937 | PI Delfzijl | Corn.Houtmanstraat 37 | Delfzijl | Nederland | verhuizing vanuit Groningen | | |
| 1937 | | | | | | | |
| 1936 | Radio-Holland Indië | Parapattan | Batavia | Ned. Indië | verhuizing verkoopafd. | | |
| 1936 | Opleidingsschool Amsterdam | Keizersgracht 688 | Amsterdam | Nederland | | | |
| 1935 | hulp-PI Scheveningen | Vissershavenweg 45 | Scheveningen | Nederland | | | |
| 1935 | Radio-Holland Indië | Kaliasin 131 | Soerabaja | Ned. Indië | hulp inspektie | | |
| 1935 | Radio-Holland Indië | | Medan | Ned. Indië | lokale vestiging | | |
| 1935 | Radio-Holland Indië | | Aneta | Ned. Indië | lokale vestiging | | |
| 1935 | hulp-PI Groningen | Oosterhaven | Groningen | Nederland | ? | | |
| 1934 | Radio-Holland Indië | | Ceram | Ned. Indië | exploitatie landstation | | |
| 1934 | PI Curacao | Bargestraat 14 | Willemstad | Curacao | | | |
| 1932 | PI Curacao | | Willemstad | Curacao | | | |
4/1/1932 | 1932 | Hulp-PI Ijmuiden | Havenkade 7c | Ijmuiden | Nederland | | | |
| 1930 | Radio-Holland Indië | | Bandoeng | Ned. Indië | | | |
| 1930 | Radio-Holland Indië | | Semarang | Ned. Indië | | | |
12/1/1928 | 1928 | NIROM | | Batavia | Ned. Indië | samen NV Handelsmij -1949 geliquideerd | 1949 | |
| 1927 | Akiz-Radio-Holland | | Batavia | Ned. Indië | samenwrking Philips | | |
| 1925 | Radiopeilstation | | Maassluis | Nederland | 1933 einde RH exploitatie | | |
| 1925 | Radiopeilstation | | Ijmuiden | Nederland | 1933 einde RH exploitatie | | |
| 1925 | Agentschap | | Willemstad | Curacao | | | |
| 1925 | Radio-Holland Indië | | Tandjong Redeb | Borneo | exploitatie kuststation | | |
| 1924 | Opleidingsschool Amsterdam | Keizersgracht 31 | Amsterdam | Nederland | | | |
4/1/1923 | 1923 | PI Amsterdam | Levantkade 6 | Amsterdam | Nederland | | | |
| 1922 | PI Rotterdam | Boompjes 28 | Rotterdam | Nederland | hoofdlokatie | | |
| 1921 | PI Hamburg | | Hamburg | Nederland | | | |
| 1921 | PI Vlissingen | Steenen Beer 3 | Vlissingen | Nederland | | | |
| 1921 | Radio-Holland Indië | | Weltevreden | Ned. Indië | | | |
5/1/1920 | 1920 | | | | | | | |
| 1920 | Radio-Holland Indië | Zuiderboordweg 17 | Tandjong Priok | Ned. Indië | | 6/5/1958 | |
| 1920 | PI Rotterdam | Maaskade 44/45 | Rotterdam | Nederland | 2e locatie | | |
| 1919 | PI Amsterdam | Weteringschans 104 | Amsterdam | Nederland | | | |
3/1/1919 | 1919 | | | | | | | |
| 1919 | PI Rotterdam | Boompjes 23 | Rotterdam | Nederland | | | |
| 1919 | Radio-Holland Indië | Laan Trivelli | Batavia | Ned. Indië | | | |
| 1919 | PI Tandjong Priok | Kali Matti | Tandjong Priok | Ned. Indië | | | |
| 1919 | Opleidingsschool Rotterdam | | Rotterdam | Nederland | | | |
| 1919 | Opleidingsschool Rotterdam | | Rotterdam | Nederland | | | |
| 1917 | PI Rotterdam | Boompjes 23 | Rotterdam | Nederland | PI= Plaatselijke Inspectie | | |
| 1917 | PI Amsterdam | De Ruyterkade 13 | Amsterdam | Nederland | | | |
| 1917 | PI Amsterdam | Pr. Hendrikkade | Amsterdam | Nederland | | | |
12/6/1916 | 1916 | | | | | | | |
| 1915 | Opleidingsschool Amsterdam | De Ruyterkade | Amsterdam | Nederland | | | |
| 1915 | Opleidingsschool Amsterdam | Pr. Hendrikkade | Amsterdam | Nederland | | | |
| 1915 | Opleidingsschool Amsterdam | Heerengracht 125 | Amsterdam | Nederland | | | |
| 1915 | Opleidingsschool Amsterdam | Keizersgracht 562 | Amsterdam | Nederland | | | |
| 1915 | Opleidingsschool Amsterdam | Levanttkade 6 | Amsterdam | Nederland | | | |
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