My experience with the duplexer is: I looked at my Arrow on my antenna analyzer without the duplexer. After some tuning I got a pretty good dip at 146 and 436 MHz. With the duplexer attached the tuning went way off. I tried, but couldn't even get it close with it installed. I use mine with my ICom 910. One coax per band. The antenna is on a sturdy camera tripod with two Arrow dualband yagis. I have each antenna connected to a small BNC coax switch so I can remotely switch polarization as needed. At the antenna there is a preamp for each band with power for the preamps being fed through the coax. For a rotor I simply use a large RC robot style geared servo for AZ being that this is just a temporary out the back door setup. For EL I just walk out and set the EL on the tripod before the bird comes over. With this setup I usually use about 5 to 10 watts on VHF depending on the bird and elevation. On UHF I sometimes need a little more power due to the attenuation in the coax which is about 50 ft long.
Michael KC4ZVA Sent from my iPad
On Oct 13, 2015, at 7:54 AM, Steve Kristoff skristof@etczone.net wrote:
I ordered my Arrow Antenna without the duplexer, so I've always used it with two separate coaxes and two radios. I use a simple digital recorder to record the QSOs. My experience, so far, is limited to SO-50, but the set-up works just fine for that satellite.
Steve AI9IN
----- Original Message ----- From: "W3MAT ." w3mat03@gmail.com To: "AMSAT-BB" amsat-bb@amsat.org Sent: Tuesday, October 13, 2015 1:23 AM Subject: [amsat-bb] Arrow Antenna
Has anyone removed the duplexer and its coax and replaced it with one coax cable to VHF, and one coax cable to UHF for two radio operation? If so, did you notice any improvement and what would the power rating be now without the duplexer? _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb