[Repeater-Builder] Duplxer, tuned cavity question.
I have an APRS station on 144.39. I would also like to run my Packet station on 145.03. So I need someway to run both stations. What would I need to do? Can I build what I would need? If so where would I find that info? Thanks, Kevin Kc7hgn
Re: [Repeater-Builder] Duplxer, tuned cavity question.
Assuming from reading between the lines that you want to use both stations on the same antenna, get a 2 meter duplexer. The seperation between the 2 frequencies is 0.64 MHz. At bare minimum you need a notch (reject) duplexer but a bandpass-band reject type would probably be the better choice. Tune each leg to the respective frequency and connect to the respective radio. Milt N3LTQ - Original Message - From: Kc7hgn kc7...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Monday, July 19, 2010 5:48 AM Subject: [Repeater-Builder] Duplxer, tuned cavity question. I have an APRS station on 144.39. I would also like to run my Packet station on 145.03. So I need someway to run both stations. What would I need to do? Can I build what I would need? If so where would I find that info? Thanks, Kevin Kc7hgn Yahoo! Groups Links
Re: [Repeater-Builder] Duplxer, tuned cavity question.
Good advice. The only thing that I would add is that you need to use good quality equipment for the antenna system. This includes the duplexer, jumpers, connectors, cable and antenna. When you have a situation where two transmitters can be on the air at the same time on the same antenna system, you always stand the chance of creating intermod. 73, Joe, K1ike On 7/19/2010 6:55 AM, Milt wrote: Assuming from reading between the lines that you want to use both stations on the same antenna, get a 2 meter duplexer. The seperation between the 2 frequencies is 0.64 MHz. At bare minimum you need a notch (reject) duplexer but a bandpass-band reject type would probably be the better choice. Tune each leg to the respective frequency and connect to the respective radio. Milt N3LTQ - Original Message - From: Kc7hgnkc7...@yahoo.com To:Repeater-Builder@yahoogroups.com Sent: Monday, July 19, 2010 5:48 AM Subject: [Repeater-Builder] Duplxer, tuned cavity question. I have an APRS station on 144.39. I would also like to run my Packet station on 145.03. So I need someway to run both stations. What would I need to do? Can I build what I would need? If so where would I find that info? Thanks, Kevin Kc7hgn Yahoo! Groups Links
