[Fourlanders] W1GHZ transverter kit group buy
Bob Lear
w4zst at windstream.net
Fri Oct 9 15:55:57 PDT 2009
I have looked over the info on these kits, read the original W1GHZ
articles and other comments.
I think they are a pretty good idea for getting into microwave stuff on
the cheap. As he mentions, they will need external filters if in a high
RF environment and if they were to be used with amplifiers.
Altogether though they look like a good deal and a lot of fun to build.
You will need to supply some of the parts, especially the SMA
connectors and pipe caps, but that's how he's keeping the prices down.
Paul and others who questioned the LO schemes were right on with their
figuring. Just subtract 144 (or add if high side injection and backward
tuning) from the desired frequency and that gives you the LO frequency.
W1GHZ did a pretty neat trick to get these transverters together and use
simple and no-tune components.
Anyway, I say go for it. I am going to get a 3456 as I only have one of
those and it's nice to be able to have two to talk to each other and
make sure everything is working, which is more difficult with only one.
I also like his little relay board for RX/TX switching. That will come
in quite handy and I'll probably get several of those.
On the web site it did say that the parts kits DO NOT include the PCB so
for each band you want, order the transverter parts kit, transverter
board, appropriate LO parts kit, LO board and a relay kit. Apparently
the relay kit includes the board as it is not listed separately.
I'm looking forward to it too. Enjoy!
Bob
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