I just got this but I don't know what it is. - UK Vintage Radio Repair and Restoration Discussion Forum

chfone1 · 30th Nov 2020, 10:01 am

It looks like German military think but I'm not sure.
I can see it is a68 and serial number is German. That's all I know.
I really want to know what this is.
Please help me!

Steve G4WCS · 2nd Dec 2020, 12:41 pm

ore information in your post would help. what is the valve type, are there any markings on the front panel banana sockets etc? My guess would be some sort of rack mounted power supply with voltage test points

turretslug · 2nd Dec 2020, 5:11 pm

Difficult to say, not many clues, not even a recognised abbreviation of purpose anywhere beyond manufacturer in-house code and inevitably swayed by onlooker background bias- but I wondered if it was some form of audio/LF equaliser or line send/receive module from say telecoms or broadcast practice. The black rectangular thing might be a relay, an LF balun/impedance changer, an equaliser coil.... Definitely an expensive, professional installation sort of thing originally.

Any background on what it was from?

Superscope · 2nd Dec 2020, 5:31 pm

The connector looks like an old V35 interface.

Ian

stevehertz · 2nd Dec 2020, 5:50 pm

1950s or 60s with those resistors.

chfone1 · 5th Dec 2020, 2:44 pm

Quote:

Originally Posted by Steve G4WCS

More information in your post would help. What is the valve type, are there any markings on the front panel banana sockets etc? My guess would be some sort of rack mounted power supply with voltage test points

This is preamp circuit.

30th Nov 2020, 10:01 am	#1
chfone1 Diode Join Date: Nov 2020 Location: New York, USA. Posts: 2	I just got this but I don't know what it is. It looks like German military think but I'm not sure. I can see it is a68 and serial number is German. That's all I know. I really want to know what this is. Please help me! Attached Thumbnails

2nd Dec 2020, 12:41 pm	#2
Steve G4WCS Heptode Join Date: Sep 2004 Location: Preston, Lancashire, UK. Posts: 632	Re: I just got this but I don't know what it is. ore information in your post would help. what is the valve type, are there any markings on the front panel banana sockets etc? My guess would be some sort of rack mounted power supply with voltage test points

2nd Dec 2020, 5:11 pm	#3
turretslug Dekatron Join Date: Nov 2011 Location: Surrey, UK. Posts: 4,393	Re: I just got this but I don't know what it is. Difficult to say, not many clues, not even a recognised abbreviation of purpose anywhere beyond manufacturer in-house code and inevitably swayed by onlooker background bias- but I wondered if it was some form of audio/LF equaliser or line send/receive module from say telecoms or broadcast practice. The black rectangular thing might be a relay, an LF balun/impedance changer, an equaliser coil.... Definitely an expensive, professional installation sort of thing originally. Any background on what it was from?

2nd Dec 2020, 5:31 pm	#4
Superscope Octode Join Date: May 2017 Location: St Austell, Cornwall, UK. Posts: 1,018	Re: I just got this but I don't know what it is. The connector looks like an old V35 interface. Ian

2nd Dec 2020, 5:50 pm	#5
stevehertz Dekatron Join Date: Sep 2011 Location: Rugeley, Staffordshire, UK. Posts: 8,827	Re: I just got this but I don't know what it is. 1950s or 60s with those resistors. __________________ A digital radio is the latest thing, but a vintage wireless is forever..