Hi VHF ops
I am probably not going to make the activity this evening. The tower mtd
box is torn apart and in pieces. I am looking for a reason why the thing
is cutting out. So far I cannot find a problem and on further
examination the preamp seems OK. (It helps when you set the NF meter to
222 MHz instead of 432 MHz!) I have an after noon appointment for my
truck so no time to haul things back up the tower later today.
I need to stress test every component in hopes of finding a problem. The
coax relay has about 100 dB isolation. I even tested between the TX and
RX ports and that looks good. I will put the old DEMI preamp back in
and see if the problem goes away. I suspect an intermittent connection
in the cavity preamp, but am really not sure yet. Very exasperating!
So the plan is for everyone to get on 222 starting after dinner and have
fun until you drop. Sounds simple enough. We mostly use the ON4KST
chat page for setting up skeds. Use Region 2 144/432 MHz Chat.
73
Dave K1WHS
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