UK Vintage Radio Repair and Restoration Discussion Forum

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-   -   VHF UHF TV set for home brewing gear (https://www.vintage-radio.net/forum/showthread.php?t=156972)

Malcolm T 1st Jun 2019 3:09 pm

VHF UHF TV set for home brewing gear
 
I have acquired a VHF UHF TV set from the dump with glorious valves !!!
Ive only had a brief look after a clean up and i have already two valves for
use , a BY88 and a PL500 , havnt had a chance to look at the others yet and as for their ultimate condition ie are they still in good vacuum shape well who knows depending on what else is in there i,m leaning toward something radio RF based either HF or VHF
Or something audio with low voltage HT


Sometimes the local dump is a gold mine !

Any ideas anyone

Nuvistor 1st Jun 2019 3:17 pm

Re: VHF UHF TV set for home brewing gear
 
BY88? Probably PY88.

julie_m 1st Jun 2019 3:23 pm

Re: VHF UHF TV set for home brewing gear
 
Agreed, "BY" indicates a silicon rectifier diode!

Restoration73 2nd Jun 2019 9:40 am

Re: VHF UHF TV set for home brewing gear
 
You should be able to recycle the valve audio stage to construct a basic amplifier.

The PL500/504/509 line output valves could be used in a grounded grid RF power
amplifier, but whatever you build you need a suitable mains transformer.

Malcolm T 2nd Jun 2019 10:27 pm

Re: VHF UHF TV set for home brewing gear
 
Yes took a closer look it is a PY88. Covered in years of burnt on grime , i was tempted to plug it in but it might be dodgy .
Audio amp sounds like a nice project. its a shame to take it apart but it has defiantly seen better days .
A case of seeing whats salvageable and then going from there , caps a probably done for .


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