That unit would have needed a C800 or C900 control head and was most likely a SP build for a Federal agency, several generations back as radio systems go. The dual RX allowed the radio top have good sensitivity in both the 163 and 167 ranges as the front end filtering were not that wide and/or allowed for dual receive. The 1st IF outputs were combined and passed to a comman detector. A switching matrix would have selected the appropriate ICOMs for TX and RX based on the channel selector position. A PSLM board might have been installed to allow scanning on one receiver. Basically a "you tell us what you need and we will build it" project. Hope you have a manual or lots of patience to sort things out.
Milt N3LTQ ----- Original Message ----- From: "Laryn Lohman" <[email protected]> To: <[email protected]> Sent: Tuesday, May 26, 2009 10:12 PM Subject: [Repeater-Builder] Re: Help Identifying Matrix in Mastr II > >> the part number 19B233115G1 appears to be a box rather than a component. > > Yes, as stated, it is the box containing the matrix. > >> >> Please advise the frequencies of the ICOMs, along with their positions in >> the radio. > > > TX-- > F1 167.2625 > F2 .3125 > F3 .400 > F4 .5625 > F5 .750 > F6 .5375 > F7 .650 > F8 .3625 > > RX1-- > F1 163.925 > F2 .8875 > F3 .8625 > > RX2-- > F1 167.2625 > F2 .3125 > F3 .400 > F4 .5625 > F5 .750 > F6 .650 > F7 .3625 > > RX2 has only an RF section and oscillator section. The IF area is not > populated except for 4 or 5 components. > > > I suspect that you have an IMTS or MTS mobile telephone drawer, >> but the frequencies will provide valuable information. > > Naw I don't think so. And the radio is not duplexed... > > Hope this helps. > > Laryn K8TVZ > >> >> 73, Eric Lemmon WB6FLY > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
