Phil Theis (K3TUF) produced a relay board that worked with the
earlier SDR-1000 to provide programmed relays, switched from PowerSDR
as you change bands. He called it the UCB.
He announced that he would make an interface for it to allow it to
work with the 5000, but nothing has come of this as far as I know.
See http://k3tuf.com/UCB.html for details. You might want to email
him to ask about the status. I also need this, assuming PowerSDR has
or will have the codes to work the i2c control system.
Jerry W4UK
At 08:21 PM 1/19/2010, Paul Mullins wrote:
Hi all,
I have been enjoying my new amateur radio, best tool I have ever
bought, thats right its a tool for me I use the build in features
for testing items that others in the local area can not test very easily.
My question is given that the flex is so flex-able, how would I make
it switch ( relay styles outputs) on and off in a as per band situation.
What I have to do, and I do not like doing it but have to, is use a
set of filters that need to be switched on or off per band, to
remove the air born rubbish from a near by AM broadcast transmitter.
I love the flex and many of my fellow ham operators that have seen
it love it and would take it from my hands in an instant.
I feel that in my operating position the flex could use a little
help on the front end filtering, maybe a simple set of external
filters on the rx taps.
Just to let you know how close this problem is with out an antenna
the received signal is
1.395
NO antenna ie receiver set to N/C pilot tone is -62 dBm or 10 +
Long wire running 90 degrees to transmitter P/T is -5dBm
Vert antenna base is 10 meters fro ground P/T is +2-5 dBm
and the transmitter has two transmissions this one is the lower power one
the other 1.539 is stronger again basically add 2-5 dBm more, and
the poor front end over loads,
Is there a way of front end attenuation.
Surprising as it is I do not feel like packing up camp and moving,
maybe I should just wait out and pray that all broadcast
transmissions of digital, and well away from used ham bands in Australia.
Currently ACMA (same as FCC) are pushing people to DAB+ on 205 mHz.
Any ideas, I have though of pull supply fuses (lol).
cheers all
Paul
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