Labgear D4129 Non-blocking linear pulse amplifier - UK Vintage Radio Repair and Restoration Discussion Forum

iradcliffe · 8th Apr 2020, 5:47 pm

This has been under the bench since I bought it as a student in about 1980 from a surplus shop in Newcastle under Lyme. I presume it does what it says on the tin, but I would like to know what it was used for, and does it have any historical value?

Model is Labgear D4129, serial number R008. All the valves are Mullards, One ECC83,two ECC85,a 108C1, five M8100 (CV4010), and a EL360. It has solid state rectifiers (60-10 type case?).

Radio Wrangler · 8th Apr 2020, 11:29 pm

Those look like high voltage connectors for input and output. I wonder if it's some form of preamplifier for some sort of nuclear counter? The non-blocking bit might mean that high voltage DC bias is passed from output to input.

Finest guessing!

There'l be someone who recognises it along shortly

David

8th Apr 2020, 5:47 pm	#1
iradcliffe Diode Join Date: May 2018 Location: Isle of Man Posts: 5	Labgear D4129 Non-blocking linear pulse amplifier This has been under the bench since I bought it as a student in about 1980 from a surplus shop in Newcastle under Lyme. I presume it does what it says on the tin, but I would like to know what it was used for, and does it have any historical value? Model is Labgear D4129, serial number R008. All the valves are Mullards, One ECC83,two ECC85,a 108C1, five M8100 (CV4010), and a EL360. It has solid state rectifiers (60-10 type case?). Attached Thumbnails

8th Apr 2020, 11:29 pm	#2
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,869	Re: Labgear D4129 Non-blocking linear pulse amplifier Those look like high voltage connectors for input and output. I wonder if it's some form of preamplifier for some sort of nuclear counter? The non-blocking bit might mean that high voltage DC bias is passed from output to input. Finest guessing! There'l be someone who recognises it along shortly David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done