I will check on that, too. These are used as mixers, so overall gain shouldn¡¯t be as big an issue but yes, it¡¯s important to have the bias at -1.35V before starting.?
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
On Thu, Jan 30, 2025 at 13:12, Ralph Mowery via groups.io <
ku4pt@...> wrote:
In addition to all that which is good, the circuits around the tubes may need to be adjusted when the tubes are changed.
Ralph ku4pt
On Thursday, January 30, 2025 at 12:27:54 PM EST, DONNIE WA9TGT via groups.io <cfzepp@...> wrote:
When you do your test you first need to make sure the resting AGC bias voltage is properly set (Rcvr Sensitivity) then set s-meter to 1 ?Then make your test.?
?
Then after substituting the 6AH6 tube for the 6HS6 you need to recheck the resting AGC voltage again because as it may need re-adjusting as well as the s-meter reset to 1. Otherwise it will not be a fair test.?
Donnie / WA9TGT
_.__,_
