33b Carrier frequency equipment
33a Radio link equipment
r31 telex equipment
r32 telephone equipment

MEK8, 8-voice-channel system (AEG)*
Schaltung einer MEK-Endstelle-A

MG15, 15-voice-channel system (Siemens&Halske)*
Schaltung einer MG-15-Endstelle-A

Weiche für MG15

S&H MG15. 15-Kanal-Trägerfrequenzgerät für 15 Gespräche (300-2700Hz), zuerst umgesetzt auf das Band 15-60kHz und dann gruppenweise auf die Frequenzlagen 48,3-92,7kHz für Richtung A-B bzw. 111,3-155,7kHz für Richtung B-A, einschließlich der entspr. Rückumsetzungsschaltung. [Fritz Trenkle: Die dt. Funknachrichtenanlagen bis 1945, Band 2, S.139]

It seems to be confirmed that it was 15-channel carrier frequency connection using the MG15 equipment on coax-cable between
Hirtshals-Arendal and Hanstholm-Kristiansand.

Further information indicates that it has been a carrier system between Stavanger and Oslo, while the map from FMU (Forsvarsmuseet) shows the line between Flekkefjord and east of Arendal. Since none of these places has little arguments for being close the end. It is very likely that the telephone wire system partly followed the railroad between Stavanger-Kristiansand-Arendal-Kongsberg, with the submarine cable to Denmark (Hirtshals) from Stölsvika/Arendal.

Trägerfrequenzgerätes b - Tfb1 und Tfb2 (German WWII single channel carrier frequency equipment)

Brukt i Televerket inntil ca 1976. Problem var at båndbredden bare var 1,8kHz(?). Kom over 2 stk i Bergen, men de ble
dumpet før jeg fikk tillatelse til å få de, mere moderne versjon fra LME med 6AQ5/EL90 rør som 1-kanal BF.
På sjøkabel til Masdalen gikk det på 2 kabelpar en 1-kanal, en 3-kanal og en 12-kanal, dette ble regnet som et kunststykke,
teoretisk sett ikke mulig mente man.. Norsk Telemuseum har mange forskjellige varianter

Trägerfrequenzgerätes b - Tf.b. 1 / Tf.b. 2

Weiche für Tf.b (?)
BF1124, Rel bkb.118a, Rel.NBv.BF1124, Ausg. IV 1943

Later 480-channels submarine cable systems to Denmark and England, power feed units (main/protection)
Believe they were made sometime in the early 70's. The German 8-channel submarine systems - between
Hanstholm-Arendal and Hanstholm-Kristiansand - were later upgraded to 60-channels, but had no submarine
cable amplifiers and could not handle so much traffic.The old German coax-seacables were in service until 1986(?).

TF-429 Träger Frequenz Geräte

Single-channel carrier frequency unit TF-429. Probably built by Felten & Guieaume around 1965-66, it is driven from a 6V battery or 24V external source and transistorized. TF-Gerät 1 - Kanal TF429, FGF Typ: 6-231-373.01. It has semiconductors (OA85, OC72, but also more modern diodes),components are mounted on printed circuit boards, some capacitors are marked "5-65", so it is probably manufactured around 1965-66.

One unit had instructions in German, another had in Norwegian. Probably used by the army, because otherwise I would have seen them at work in Norwegian telecomms.

pg. r32: Telephones
pg a14 Sjøkabler til utlandet og telekommunikasjon i Aust-Agder (Sub-sea cables)

*Handbuch für Hochfrequenz - und Elektro-Tekniker, I. Band (1952):
Verlag für Radio-Foto-Kinotechnik GMBH, Berlin-Borsigwalde:
Übertragungstecknik auf Fernmeldeleitungen (S.488-514)
**Fritz Trenkle: Die deutschen Funknachrichtenanlagen bis 1945, Band 2 "Der Zweite Weltkrieg",
13.8 Zusatzgeräte für Funklinien (S.139)


updated: 2004.09.30