I have a KX3 and KXPA100. I want to put up a receiving loop antenna for
160M and transmit with my short marconi 160M antenna. What do I need to do
to accomplish this?
Switching things the way they are now takes too long and too many
operations so I pretty much gave up on the project.
--
Jim
Hi there!
Rick N6RK gave a nice presentation at Pacificon a few years ago about low
band receiving loops and it is online. Perhaps this will give you a few
ideas:
http://www.n6rk.com/loopantennas/pacificon.pdf
73, Byron N6NUL
On Sat, Nov 22, 2014 at 10:59 AM, Jim GM jim.gmfo...@gmail.com
Jim,
Since the KX3/KXPA100 combination has no RX ANT input, you will have to
devise some kind of external T/R switching to connect the receiving loop
during non-transmit times.
There is a PA Keying output from the KXPA100 that you could use to
activate the T/R switch for transmit times.
If
and Transmit Antenna Switching help
Jim,
Since the KX3/KXPA100 combination has no RX ANT input, you will have to
devise some kind of external T/R switching to connect the receiving loop
during non-transmit times.
There is a PA Keying output from the KXPA100 that you could use to
activate the T
Mel and all,
That is certainly a way around the hot-switching problem, and works fine
when you are using the microphone PTT switch - but does not work for QSK
CW or VOX operation.
There *are* relays and T/R switching devices that switch faster than the
KX3/KXPA100 Key Out to the onset of RF
, 2014 2:01 PM
Subject: Re: [Elecraft] 160M Receive and Transmit Antenna Switching help
Mel and all,
That is certainly a way around the hot-switching problem, and works fine
when you are using the microphone PTT switch - but does not work for QSK
CW or VOX operation.
There *are* relays
Here’s how I did it: www.ad5x.com/images/Articles/SeperateTRantswitch.pdf
Phil – AD5X
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
I like it.
Mel, K6KBE
From: Phil Debbie dpsa...@tx.rr.com
To: elecraft@mailman.qth.net
Sent: Saturday, November 22, 2014 3:57 PM
Subject: Re: [Elecraft] 160M Receive and Transmit Antenna Switching help
Here’s how I did it: www.ad5x.com/images/Articles/SeperateTRantswitch.pdf
Phil
Phil,
How do you deal with the RF after HSEND drops as it does in the
706mkIIg, 7000, 7600, etc. in QSK (and potentially semi-break in)?
That is, how are you preventing hot switching and potentially
putting RF into the receive antenna and damaging it?
73,
... Joe, W4TV
On 2014-11-22 6:57
Hi Joe – I used semi break-in with the IC-706MKIIG. Just a tiny bit of
drop-out delay eliminates the unkey hot-switching problem – but then you can’t
be fully QSK. You can also make a simple mod to this switch to make it hang
long enough to eliminate the problem. See:
10 matches
Mail list logo
