Hi Eric Well, I don't know what to say. They certainly look better on the instruments than any of the 6" can or even the 8" can duplexers I have around. The 4" telewave's don't even come close. They look as good or better than 6 can tprd-1556's. I may be swapping out the Q-202.s.
73 Norm ----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Sat Sep 26 22:49:17 2009 Subject: RE: [Repeater-Builder] TX/RX systems duplexers. WOW!!! Norm, The TX-RX specifications on catalog sheet C1024G9 for a 28-38-03A duplexer are 80 dB isolation and 1.9 dB insertion loss. Your readings are certainly extraordinary. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] <mailto:Repeater-Builder%40yahoogroups.com> [mailto:[email protected] <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of NORM KNAPP Sent: Saturday, September 26, 2009 8:52 PM To: [email protected] <mailto:Repeater-Builder%40yahoogroups.com> Subject: [Repeater-Builder] TX/RX systems duplexers. WOW!!! I wound up with a set of Tx/RX 28-38-03-C vari-notch duplex today. I was not expecting much. I got them cheap. The cans are only 4". No big deal. Bigger cans = deeper notches with less insertion loss, right? Well, unless my site master and IFR-2945B are lying to me, I got -100db on the notches and 1.2 db insertion loss! I will say this, the coupling loops are very different than what I have seen in sinclair, telewave and db cans. Does anyone else have any experience with this model? Am I reading things right? All I got to say is, incredible!
