John,
For a UHF control receiver one solution is to parallel another recevier
a channel away from your repeater input using a splitter for the 2
receivers using the same feed from your duplexer.
Most duplexers have notch 100 kHz or so wide so it will work for both
receivers. Know this might be on another repeaters input, but often
they are far away. Can look on both sides of your input freq. This
approach also would not require another antenna/feedline...just another
box.
Make sure you tone or secure the control rcvr. If have DCS might
consider this since few use it, but seems most rigs these days are
coming with it. Otherwise use a CTCSS that is not common in your area.
For equipment I have used Motorola Micor receivers. One can get in 19"
rack mount. Normally have to build in a small 9.6 VDC supply or some
come with it. These were used as second receivers in base stations,
voting systems, etc. You can also run off repeater supply since rcvr
draws little current (don't need the speaker audio), but should have a
9.6 V regulator. GE makes similar rcvrs.
73, ron, n9ee/r
Ron Wright, N9EE
727-376-6575
MICRO COMPUTER CONCEPTS
Owner 146.64 repeater Tampa Bay, FL
No tone, all are welcome.
On Sun, May 11, 2008 at 5:33 PM, John Transue wrote:
I would like to add a control receiver to a UHF (446 MHz) repeater. The
repeater is at a hospital that has allowed us to put up the repeater
antenna but is very hesitant to permit additional antennas. So, is there
a way that I can use the repeater antenna for both the repeater and the
control receiver?
John AF4PD
