[ARC5] Notes and Tips: RCA AVR-20, AVT-112, AVA-126

[Kenneth G. Gordon]

On 19 Oct 2015 at 13:04, Jack Antonio wrote:

 
> Replacement vibrators are unobtanium.

Yes....which is the reason so many of us have gone to transistor 
multi-vibrators mounted in a vibrator case, when possible.

> My AVA-126A came with a 6V vibrator that had the base rewired for
> 12V operation. It was so well done, it was not immediately apparent.
> It also had the 0Z4 changed to a 6X5(with filament dropping resistor). 
> All attempts to restore the unit back to a 0Z4 failed, high current draw 
> and low hi voltage output. So the 6X5 and its resistor stayed.

I've always hated the OZ4. Car radios used to have those in them, as I 
remember it, and once they had gotten old, it was very difficult to get them to 
work.

Ken W7EKB