Hi Gang, I have two 2M repeaters made out of Micor Mobil's running 30W each. They both use Sinclair Q202G0-N Hybrid Ring [the model number you're looking for] with absolutely no desense. They are the bomb, but thay are a little bit of work to tune, the only problem with using the Q202G is that the plunger hits the bottom of the can at about 144.700 megahertz.
- In Repeater-Builder@yahoogroups.com, "n3dab" <rb_n3...@...> wrote: > > 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 Repeater-Builder@yahoogroups.com, David Struebel <wb2ftx@> 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: Repeater-Builder@yahoogroups.com > > 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 > > >
