Jeff, The DVP Micor uses a TRN8095A A&S board, while the non-DVP stations use the TRN6006A board. The only differences involve the values of C231, C232, C233, C234, R234, and R237 which is used only on the DVP board. These components are all clustered at Test Points 12, 13, 14, and 15 on the schematic, and appear to affect only the squelch action.
73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim Sawyer Sent: Monday, September 06, 2010 9:20 PM To: Repeater-Builder@yahoogroups.com Cc: Jeff DePolo Subject: Re: [Repeater-Builder] Micor UHF Sensivity Yes, it is a DVP station. I have the DVP manual and I just checked the spec. It's the same < 0.5 uV for 20 dBQ. The test procedure does say to load the speaker. I'll give that a try tomorrow. -- Tim :wq On Sep 6, 2010, at 8:17 PM, Jeff DePolo wrote: > The SP docs show it being a DVP station. DVP receivers have wider (and > flatter) IF filtering than standard Micor Sensitron receivers. They need a > flatter IF passband to decode DVP properly. I'm wondering if that's why the > 20 dBQ reading comes out higher than normal. I *thought* the A/S board was > the same between DVP and standard stations, so the AF circuitry should be > the same between the discriminator and the speaker terminals. > > --- Jeff > > >> -----Original Message----- >> From: Tim Sawyer [mailto:tisaw...@gmail.com <mailto:tisawyer%40gmail.com> ] >> Sent: Monday, September 06, 2010 8:04 PM >> To: Jeff DePolo >> Subject: Re: [Repeater-Builder] Micor UHF Sensivity >> >> Here you go Jeff. Let me know what you see. >> >> >
