Quote:
Originally Posted by robinshack
If you read my post #5, it is explained there.
With that part number, IT IS A MODULATION TRANSFORMER!
The 94 ohms winding is for modulating the high voltage dc supply to the vhf tx pa stage.
The low z loudspeaker winding you are using here in your amp would have originally been designed to work with a low z public address horn loudspeaker mounted on a vehicle.
Eg. Water board vehicle warning the water will be cut off shortly.
Rob
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Gotcha! I checked out that pdf and that absolutely is the same part! Sorry for missing your post. Described as:
Modulation Transformer (9 K anode to anode and 3.5 K ohms secondary at 75 mA DC)
The amp is a bit of a hotch potch of components - which does work! But definitely scope for upgrades, and like I said, Jim told me the output transformer was a little under-specced which is why the bias is lower than it would otherwise be. Could that explain why those grid leak resistors are wired in the way that they are?