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varitable power output ubitx


 

I am swapping out the mosfets like suggested and I am looking for a way to do h/m/l power so I can use a 10m to 2m transverter and a amp .
but would require the power to be less then 5 to run the transverter and or the amp. wo I am looking at a 3 point rotary switch but how to put it in line is the question. this would give more controll.

the mosfets I am changing to are?RD16HHF1 TO-220 Mitsubishi HF RF Power MOSFET??
giving more power and better performance


 

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Check on power control. ?I posted a circuit to do it by band using relays but you could use a switch i suppose. ?Just make sire the leads are shielded.?


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

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Owner - Operator

Big Signal Ranch ¨C K9ZC

Staunton, Illinois

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Owner ¨C Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it:


email:??bill@...

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On May 1, 2018, at 10:30 AM, Richard E Neese <kb3vgw@...> wrote:

I am swapping out the mosfets like suggested and I am looking for a way to do h/m/l power so I can use a 10m to 2m transverter and a amp .
but would require the power to be less then 5 to run the transverter and or the amp. wo I am looking at a 3 point rotary switch but how to put it in line is the question. this would give more controll.

the mosfets I am changing to are?RD16HHF1 TO-220 Mitsubishi HF RF Power MOSFET??
giving more power and better performance


 

Alternately, check out this thread:
? ??h/g/BITX20/message/45775?
Zero new hardware required.
I have not tried it.

I'm curious if anyone has found reasons not to do it this way.

Jerry


On Tue, May 1, 2018 at 10:54 am, K9HZ wrote:
Check on power control. ?I posted a circuit to do it by band using relays but you could use a switch i suppose. ?Just make sire the leads are shielded.?