Tony, Those Sinclair multicouplers are intended to serve as many as 12 separate receivers from one antenna. Ideally, all receivers should be for frequencies that are clustered within a few MHz of each other, and the preselector will be tuned to pass a band that is perhaps 2-4 MHz wide. The splitter that follows the amplifier will provide sufficient isolation between receivers. No additional cavities are needed.
73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of kt...@ameritech.net Sent: Friday, August 21, 2009 7:27 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Sinclair UHF Receive Antenna Multicoupler Question Good Day everyone, Does anyone have experience or tuning info for a Sinclair UHF Antenna Multicoupler? The model on the rack panel is "CR4-302CF" and contains a power supply, pre-amp (or preselector) and BNC distribution box (1 to 12 outputs). Looks like 450-470 range. I haven't hooked this up yet, but wanted to see what to expect from it. Can such a device be used directly to receivers, or do you still need to add band-pass cavities between it and the receiver? Thanks for any information! Tony
