[Repeater-Builder] Old GE radios for free in SF Bay Area
I am doing some cleaning out and find that I have two old High Band GE Execs 100W complete with accessories and cables, speakers, microphnes, etc. They are very heavy so if someone in the South Bay would like them they can have them at no cost. All you have to do is pick them up. I just need more room for what I am working on. Bruce WA6YLV...
[Repeater-Builder] 1994 MRT Article on SpectraTAC Mods?
In the February 1994 issue of MRT there was an article by Carl Ebinger of the Dade County Radio Shop who made some interesting claims about improving the performace of the SpectraTAC systems used by Dade Co. EMS. His article claimed that he could improve the performance of the SQM by the addition of $0.25 (1994$) in parts to each SQM. He described how there was too much voice getting into the noise detection circuitry which was causing falsing. Unfortunately, when I tried to track the details down [circuit left out of article] I found that Carl was a Silent Key and, thus out of range. Talking to several others in the shop, including Susie and Joe Harper, did not lead me to the schematic of the modification. Carl had been working with TRN6091A SQMs so I am wondering if Motorola incorporated his improvements into later revision SQMs. Before I begin badgering the Dade County Radio Shop again I thought I would ask here if any of you were familiar with the article and Carl's work. He did say that he improved performance by removing JU-6 and installing JU-5 in the secondary line drivers of the three subcomparators. This shortened the Status Tone return delay from 550 msec to 90 msec which improved weak signal noise detector falsing at the master comparator. Thanks, Bruce WA6YLV KMJ335 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Motorola Spectra-Tac Voter
Kevin, Did you try the SpectrTAC Yahoo List? You might get a better response there. I personally know at least one fellow locally who has done what you describe and he monitors that list now and then. Bruce WA6YLV KMJ335 --- In Repeater-Builder@yahoogroups.com, Kevin Berlen, K9HX [EMAIL PROTECTED] wrote: I am contemplating putting a Motorola Spectra-Tac voting system on one of the systems I am responsible for. Has anyone else installed one of these in it's native form (constant 2175Hz on the RF links)? I know there is the requirement to ID each link every 10 minutes. Or has someone modified the SQM's to respond to a COR signal rather than the absence of the 2175 Hz tone? I am just in the very early stages at this point, but thought I would do some fact finding work. Thanks for any input and 73, Kevin, K9HX Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
