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Re: Early TR-4 cathode resistors, etc.


 

Can you read the top of the label on the crystal filter . Interested in who made it, since I grew up in Cincinnati .
de WA8SDF


On Wed, Apr 16, 2025, 15:40 n4buq via <n4buq=[email protected]> wrote:
That's how they look in my 26xxx TR-4.

Barry - N4BUQ
These 1/2W resistors look original. I have yet to measure them but they don¡¯t look cooked. There are a couple of other places where the repair soldering isn¡¯t stellar but this rig right now is working on 80-15 with full (well, 100-150W) power and receive. I suspect that 10 needs an oscillator coil tweak.?

My question is re the resistors. Was this the original configuration?? I¡¯ve worked on very early T-4 and T-4X¡¯s that have 1W cathode resistors.?

Also note the monolithic filter that was the originally used in the early sets ¡ª note there¡¯s no cutout in the chassis so this is the first soupcan replacement.?

It¡¯s a late summer 1966 build (23xxx).?




Steve Wedge, W1ES

Time flies like an arrow. Fruit flies like a banana.


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