RE: [Repeater-Builder] Celwave CC460-A circulator

The simplified instructions for tuning an isolator are: 1. Tune input (tx port) for maximum return loss with antenna port terminated in 50 ohms and reject load connected to reject port 2. Tune output (antenna port) for minimum insertion loss, sweeping from tx port to antenna port, again with r

Re: [Repeater-Builder] Celwave CC460-A circulator

Hello Martin Have you contacted Celwave to see if the have tuning specs usually for these. I am not sure if you will get it up to 440 or not. I was told that they are pretty narrowband, but I might be wrong. YMMV Butch, KE7FEL/r On Wed, Aug 18, 2010 at 1:18 PM, cruizzer77 wrote: > > > Does an

Re: [Repeater-Builder] Celwave CC460-A circulator

Hi, Harold Kinley wrote an excellent article in MRT magazine a few years ago on aligning circulators. Maybe they still have re-prints. I have old contact details for Harold Kinley taken from MRT magazine. See below. You should also buy his *Standard Radio Communications Manual, with Instrument