Greg: If you are not on the RC210 yahoo group you should join. Earlier in
2009 there were a lot of people having problems with RC210 resets with a few
versions of firmware which has sense been resolved. You should check to see
if you have one of the unstable versions loaded and then go to either
The first red flag is the LMR400 cable which is notorious for causing
desense in duplex service. Can you hear the repeater OK but have difficulty
getting in?
Also, getting above the tree level can make a big difference on UHF.
Chuck
WB2EDV
- Original Message -
From: thornwal
I'll ditto what Chuck said. LMR-400 should be avoided like the plague in
repeater service. If you're not making your cables out of some type of
superflex, try RG-214 with proper gender connectors, you can get BNC
connectors for this coax. RG-400 is a good choice for interstage wiring,
like
1/2 Heliax would work well. You don't have a very long run. Usually can be
found pretty reasonable.
Did you kill the TX while listening to a weak signal on the local speaker?
That's the cheap and dirty desense check. If you kill the TX and the receive
signal improves, you know you have
for 1200' I'd take discriminator audio from the RX and convert it to
balanced audio with a transformer or a couple op-amps and send the
balanced audio on a pair of cat-5m. power for the RX can be sent back
on the other 3 pairs, I'd send 24 or 48V and have a 12V regulator at
the other end.
COS can
Explain your 440 setup and the coverage. Maybe someone can offer some
pointers there.
Chuck
WB2EDV
- Original Message -
From: thornwal th...@xecu.net
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, January 17, 2010 3:12 PM
Subject: [Repeater-Builder] Re: Split Site Via Coax Cables
Greg,
Trying to combine both vertical and horizontal separation will not help; the
horizontal will completely swamp the vertical. As soon as you move the
transmit antenna out from directly under the receive antenna, the isolation
decreases dramatically. Even a few feet of horizontal
At 1/17/2010 01:13 PM, you wrote:
Greg,
Trying to combine both vertical and horizontal separation will not help; the
horizontal will completely swamp the vertical. As soon as you move the
transmit antenna out from directly under the receive antenna, the isolation
decreases dramatically. Even a
8 matches
Mail list logo
