GPO Radio Receiver Type 35A. - UK Vintage Radio Repair and Restoration Discussion Forum

Brian R Pateman · 12th Jan 2008, 6:44 pm

I wonder if any one has any information about the unit named in the title. It was manufactured by Walker & Leach in Kingston upon Thames.

I think that it was used to track down "pirate" broadcasters on VHF bands.

The unit is transistorised and has two plug-in tuners - Type A covering 34 to 115 MHz in two ranges, Type B covering 115 to 225 MHz in two ranges.

It runs on no less than 3 PP3s.

Any information gratefully received.

Chris-G8ETC · 12th Jan 2008, 11:30 pm

Ah, the good old GPO type 35 Rx.

It was a general-purpose radio monitor that was available as 'personal issue' to all GPO RFI/TVI Investigators. The receiver was used for undertaking all sorts of checks and tests, but mainly for locating sources of interference using harmonics that were within the opeartional range of the item.

The set was provided with a pair of lightweight headphones, a whip aerial and some in-line attenuators. A portable 2-element aerial was also available for D/F work, which may or may not have been part of the package - I forget now.

Brian R Pateman · 13th Jan 2008, 12:35 pm

Thanks Chris,

This one came with two aerials in the lid but the di-pole sections are missing. This was presumably for the D/F application.

It does emit some crackles when turned on and the meter deflects. Unfortunately the meter needs some attention apart from anything else. Eventually I'll sort it out but it isn't exactly a priority - fits nicely into both my areas of interest, test gear and radios!

Regards,

12th Jan 2008, 6:44 pm	#1
Brian R Pateman Nonode Join Date: Jun 2005 Location: Western Lake District, Cumbria (CA20) - UK Posts: 2,136	GPO Radio Receiver Type 35A. I wonder if any one has any information about the unit named in the title. It was manufactured by Walker & Leach in Kingston upon Thames. I think that it was used to track down "pirate" broadcasters on VHF bands. The unit is transistorised and has two plug-in tuners - Type A covering 34 to 115 MHz in two ranges, Type B covering 115 to 225 MHz in two ranges. It runs on no less than 3 PP3s. Any information gratefully received. Attached Thumbnails __________________ Brian

12th Jan 2008, 11:30 pm	#2
Chris-G8ETC Retired Dormant Member Join Date: Oct 2007 Location: Epsom, Surrey, UK. Posts: 30	Re: GPO Radio Reciever Type 35A Ah, the good old GPO type 35 Rx. It was a general-purpose radio monitor that was available as 'personal issue' to all GPO RFI/TVI Investigators. The receiver was used for undertaking all sorts of checks and tests, but mainly for locating sources of interference using harmonics that were within the opeartional range of the item. The set was provided with a pair of lightweight headphones, a whip aerial and some in-line attenuators. A portable 2-element aerial was also available for D/F work, which may or may not have been part of the package - I forget now.

13th Jan 2008, 12:35 pm	#3
Brian R Pateman Nonode Join Date: Jun 2005 Location: Western Lake District, Cumbria (CA20) - UK Posts: 2,136	Re: GPO Radio Reciever Type 35A Thanks Chris, This one came with two aerials in the lid but the di-pole sections are missing. This was presumably for the D/F application. It does emit some crackles when turned on and the meter deflects. Unfortunately the meter needs some attention apart from anything else. Eventually I'll sort it out but it isn't exactly a priority - fits nicely into both my areas of interest, test gear and radios! Regards, __________________ Brian