[amsat-bb] Arrow 10W Duplexer Performance Measurements

Quite a lot of guys are using the handy Arrow Model 10W duplexer for the handheld 146/437 antenna and mine arrived here today so I thought I would put it on the network analyser and see how it performs.....

From the Radio cable to the 2m antenna connector an Insertion Loss of

0.75dB was measured with a rejection of 57dB at 70cm. The VSWR at 2m was 1.24:1

From the Radio cable to the 70cm antenna connector an Insertion Loss of

1.2dB was measured with an attenuation of 56dB on the 2m signal. The VSWR at 70cm was 1.29:1

The VSWR on the 2m port was 1.21:1 and on the 70cm port was 1.20:1

For those guys wanting to look at the actual plots they can be found here http://www.rfdesign.co.za/default.asp?pageID=785423593&filePath=D:%5CSof...

73's Allan ZS1LS