The Q202 with the 7" dia cans would give you better results, i believe, higher Q and all that. The hybrib ring type might be a PIA to retune but if you have the 4 cans with the Tuning Capacitor in the Loop Assembly tuning will be much easier and you should get 85 to 90 dB isolation per side. Not sure what the complete model no. is but there are some on eBay in one of the store listings (though the price is quite high for the Ham market).
Doug N3DAB --- In [email protected], David Struebel <wb2...@...> wrote: > > With all of this discussion, is either the Q202 or its cousins or the new > Q2330 all with now 80 dB of isolation good enough for a 2 meter repeater with > a 0.6 MHz split? Putting a new machine on the air and need to know if I > should go with a 6 cavity duplexer to give me the 100 or so dB isolation, and > albeit the higher insertion loss or can I stay with a 4 can duplexer with > typically 85 dB isolation and 1.5 dB insertion loss? > > In a quandry... most of my experience is with a Sinclair hybrid ring duplexer > which seems to work fine at a 25 watt level. > > > 73 Dave WB2FTX > ----- Original Message ----- > From: John J. Riddell > To: [email protected] > Sent: Wednesday, March 25, 2009 7:41 PM > Subject: [Repeater-Builder] More on the Q2330 Duplexer > > > > After checking the Sinclair Web site, I see that they have lowered the Tx - > Rx isolation > on the Q 2330 duplexer to 85 Db. > The original literature that I had claimed 100 Db. > > 73 John VE3AMZ > > > > > ------------------------------------------------------------------------------ > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.238 / Virus Database: 270.11.29/2023 - Release Date: 03/25/09 > 18:54:00 > > > > No virus found in this outgoing message. > Checked by AVG - www.avg.com > Version: 8.0.238 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 > 07:13:00 >
