EMRFD Message Archive 358

Message Date From Subject
358 2007-01-18 21:57:06 Monty N5ESE T/R Switch For QRP Separates
I've experimented with what I think is a new design for a broadband
QRP T/R switch, specifically targeted at QRP "separates" (i.e.,
separate transmitter and receiver).

If you've ever built a "separate" and then scratched your head about
how to actually *use* it, this one's for you:

http://www.dit-dididit-dit.com/tr_switch.htm

72,
monty N5ESE

--- Important Message from Mom - PLAY NICE!

Monty Northrup, N5ESE (ex-N5FC)
Austin, Texas
e-mail: n5ese@io.com
web page (ham): http://www.dit-dididit-dit.com
web page (home): http://www.io.com/~maddog

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360 2007-01-19 07:55:40 Bill Noyce Re: T/R Switch For QRP Separates
Monty -
It's hard to be sure from the photos, but it looks as if the Rx antenna is connected
to the Keynot line (and thus through two series gate-drain capacitors to the Tx
antenna).  Feel free to tell me there's a cut on the board I can't see...
    -- Bill, AB1AV

On 1/19/07, Monty N5ESE <n5ese@io.com> wrote:

I've experimented with what I think is a new design for a broadband
QRP T/R switch, specifically targeted at QRP "separates" (i.e.,
separate transmitter and receiver).

If you've ever built a "separate" and then scratched your head about
how to actually *use* it, this one's for you:

http://www.dit-dididit-dit.com/tr_switch.htm

72,
monty N5ESE

--- Important Message from Mom - PLAY NICE!

Monty Northrup, N5ESE (ex-N5FC)
Austin, Texas
e-mail: n5ese@io.com
web page (ham): http://www.dit-dididit-dit.com
web page (home): http://www.io.com/~maddog

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361 2007-01-19 22:36:01 Monty N5ESE Re: T/R Switch For QRP Separates
Bill:

Pretty sure that is NOT the case.  But it's quite possible that the pictures were taken before some mod was made.  I notice, for example, a resistor that's on the pc board picture, does not show on the picture of the integrated assembly.  I probably should update the images...

Thanks for the heads up... it's in the queue...

Trust no one (least of all, me ;-)

73,
monty  N5ESE

At 09:50 AM 1/19/2007, Bill Noyce wrote:
Monty -
It's hard to be sure from the photos, but it looks as if the Rx antenna is connected
to the Keynot line (and thus through two series gate-drain capacitors to the Tx
antenna).  Feel free to tell me there's a cut on the board I can't see...
    -- Bill, AB1AV

On 1/19/07, Monty N5ESE <n5ese@io.com> wrote:

I've experimented with what I think is a new design for a broadband
QRP T/R switch, specifically targeted at QRP "separates" (i.e.,
separate transmitter and receiver).

If you've ever built a "separate" and then scratched your head about
how to actually *use* it, this one's for you:

http://www.dit-dididit-dit.com/tr_switch.htm

72,
monty N5ESE

--- Important Message from Mom - PLAY NICE!

Monty Northrup, N5ESE (ex-N5FC)
Austin, Texas
e-mail: n5ese@io.com
web page (ham): http://www.dit-dididit-dit.com
web page (home): http://www.io.com/~maddog

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_/ \_/ \
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