Re: RD16HHF1 in the uBITX #ubitx

K9HZ <bill@...>

Well i just took the signal off the existing relay pins for the band filters because they are big and easy to solder too underneath, but you could easily just connect to the collectors of the relay drive transistors if your eyes are better than mine!

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ


Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois


Owner – Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it:

email:  bill@...


On Mar 21, 2018, at 6:57 AM, Bruce Anderson <bwanderson@...> wrote:

Hi Bill,

How did you tap the TXA, TXB, TXC signals?  Before or after the switching transistors?  If after, underneath the relays?  I’m interested not only in this mod (to drive every band at 5W key down), but to band-switch a linear amp, too.  It would be great to keep those signal wire above the board, though. 

Thanks de W1BWA

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