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"Tony Lelieveld" <[email protected]
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From: KA9SWI@... <KA9SWI@...> To: Repeater-builder@... <Repeater-builder@...> Date: March 18, 1999 13:53 Subject: [Repeater-builder] 2M/70CM Repeater From: KA9SWI@...repeater >that is already in operation. The 440mc machine will use the same antenna that is >going up soon (a GP-9). What is the best way to come off the hardline to get to both >sets of cavities? I was thinking of a 3/4 wave section of coax out of a "T" connector to >each cavity set. If this is used how critical is the length? HELLLLLLP!!!!! ------------------- Peter We have a UHF repeater and a VHF packet station on the same dual band antenna. At the bottom of the antenna feedline we have a Sinclair "diplexer". This is the same kind as is sold by "Comet" , "MFJ" etc. for combining a two meter and 70 cm. mobile rig into one antenna. The VHF output goes directly to the 2 Mtr. Packet radio, which is a no nonsense standard "Alinco" radio, and the UHF output goes directly to the UHF repeater duplexer antenna input. It has been on the air like this for at least 4 years and no extra filtering is needed in our case. There is one more two Mtr repeater and three commercial VHF repeaters on the same tower. This filter should cost you no more then about $40.00 and is worth the investment. If you try to do it with a "T" connector etc. I think you are asking for trouble. The diplexer is doing a good job of separating the 2 bands. Tony...Ve3DWI KA9SWI@... |
