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#ubitx - Off Topic a Litte #ubitx

Jeffrey Peters
 

Greetings,?? I have a question for this group.? I would like to use my uBitx as a receiver with my vintage transmitters.? The transmitters are tube type with power output ranging from 5-7 watts to 50-70 watts.? I currently have a MFJ-1708 Electronic T/R switch which has worked very well with all tube Drake 2B receiver.? My questions are:? What would be the best protection circuit or front end device to protect the uBitx as the receiver?? I would like to use the uBitx with a separate tube type vintage transmitter??? Your excellent electronic skills and knowledge will be most helpful.? I look forward to your thoughts and/or suggestions on this matter.

73, Jeff K9JP
 

I'm planning something similar, using the ?B for TX and SDR for RX.? I'm going to try one of these in the box.
Jeffrey Peters
 

Thanks Arvo,

I have the older version 2 unit.? I wonder about isolation from TX RF bleed though or bleed over?? I just want to do my best to protect the uBitx.
I know tube are much more forgiving, in my personal limited experience.

I will have my uBitx in a metal case,so maybe just making an adapter with a dead short at the antenna connection during transmit will be a good solution.

Thank you, Jeff K9JP

On Fri, Feb 16, 2018 at 3:19 PM, Arvo KD9HLC via Groups.Io <arvopl@...> wrote:

I'm planning something similar, using the ?B for TX and SDR for RX.? I'm going to try one of these in the box.




--
Not all of me will die - - - The good I do will live forever.? <><

Ken Brown
 

Jeffrey Peters-

Switching TX and RX?

The Coaxial change over relay or just Coaxial Relay has no problems, it is either in
RX or in TX.

CX-230 SPDT with 3 X BNC RF connectors is one example. ?

Ken



Virus-free.

On Fri, Feb 16, 2018 at 2:30 PM, Jeffrey Peters <dek9jp@...> wrote:
Thanks Arvo,

I have the older version 2 unit.? I wonder about isolation from TX RF bleed though or bleed over?? I just want to do my best to protect the uBitx.
I know tube are much more forgiving, in my personal limited experience.

I will have my uBitx in a metal case,so maybe just making an adapter with a dead short at the antenna connection during transmit will be a good solution.

Thank you, Jeff K9JP

On Fri, Feb 16, 2018 at 3:19 PM, Arvo KD9HLC via Groups.Io <arvopl@...> wrote:

I'm planning something similar, using the ?B for TX and SDR for RX.? I'm going to try one of these in the box.




--
Not all of me will die - - - The good I do will live forever.? <><


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