It could be ... that was what? 30 years ago? Neil
Gregg Lengling wrote: > > Are you sure you mean Bendix and not Delco...because delco out of > Oak Creek Wisconsin had one very similar. Of course at that time > they were owned by General Motors...now they are separate and > called Delphi. > > Gregg R. Lengling, W9DHI, Retired > Administrator http://www.milwaukeehdtv.org > K2/100 S#3075 KX1 S# 57 > Politics is the art of appearing candid and completely open, while > concealing as much as possible. -States: The Bene Gesserit View > > > -----Original Message----- > From: Neil McKie [mailto:[EMAIL PROTECTED] > Sent: Monday, December 01, 2003 2:31 PM > To: [email protected] > Subject: Re: [Repeater-Builder] GE Stuff..... > > Back in the late sixties, Bendix Radio ??, came out with a trunk > mount radio. The receiver (I think) looked very similar to the > Motorola Twin-V Line of the era. The transmitter looked like the > GE Progress Line transmitter deck. Both the receiver and the > transmitter used a cable to plug into the power supply almost exactly > like GE did in the Pregress Line. > > Neil > > Paul Finch wrote: > > > > OK, > > Here goes. There is always going to be some similarities in radio > > equipment because of the current existing technology. Look at the > > similarity between the cell phones out today that are built by > > different companies, are they all stealing each other's designs? I > > don't think so! > > > > Read my response> below. > > > > -----Original Message----- > > From: Kevin Custer [mailto:[EMAIL PROTECTED] > > Sent: Monday, December 01, 2003 1:10 AM > > To: [email protected] > > Subject: Re: [Repeater-Builder] GE Stuff..... > > > > Paul Finch wrote: > > > > >Kevin, > > > > > >Explain please! The only thing I see is the TCXO's that are even > > >anywhere close. > > > > > > > Similarities in Mobiles: > > Control Head. > > > > Response> Motorola white and grey and squared corners, GE Beige and > > tan and rounded corners. Everybody had gone plastic at that time > > due to cost. Real close! > > > > PL (Channel Guard). > > Response> This was an industry standard CTCSS, how can that be copied > > by GE? Every radio manufacture used this format, guess they all copied > > Motorola? Motorola called it Private Line, GE Channel Guard, RCA and > > Johnson something else. One other thing, if I am not mistaken this > > technology went back to the days of the old Motorola 80-D and GE > > Pre-Progress line of radios but they all put their own name on this > > technology. > > All used the EIA tone scheme ... only Motorola called each tone a > specific designator. Ie: 1Z for 100.0 Hz; 1A for 103.5 Hz etc. > > > > RF Power Output Options (Like 110 watts). > > > > Response> Again, industry standard, GE, Motorola, RCA, Aerotron and > > Kenwood all had and still have that power level, that is if they are > > still in business. As someone else pointed out a lot of this was > > driven by the industries like police and fire departments that were > > specifying the equipment. > > > > AF Power Output (10 watts) > > > > Response> Big deal, this is the best level for use in noisy environments > > like large trucks! > > > > Channelized Crystal Elements. > > > > Response> Like I said, this is the only real thing I can see that is > > similar but still not really the same circuit! > > > > 5 Pole HR in a casting that is not soldered to the PC board. > > Response> This style of helical resonator is the best for selectivity, > > I think the noisy cities we live in drove this design. Johnson, RCA > > 1000 and other serious manufactures also used this number of helical > > resonators, did they copy Motorola? (RCA did copy the Master II and > > paid big time!) > > > > Dual Hysteresis Squelch. > > > > Response> May have gotten the idea from Motorola but did not copy the > > circuit. > > > > Single Conversion Receiver, with 11 meg I-F frequency. > > > > Response> GE's was 21.4 I believe and this was driven by cost as must > > as anything else, it's just cheaper and some people think it keeps down > > intermod. > > > > Same number of I-F poles. > > > > Response> Physics, that's just what it takes to have the required > > selectivity. > > > > Stable RF/AF circuitry operates on 10 volts (9.6 on the Micor) > > > > Response> GE's Master Pro ran their circuits on regulated 10 volts long > > before Micor came out! > > > > PA Protection (VSWR). > > > > Response> Yeah, they copied Motorola's protection circuit that only > > caused more problems in the radio, I don't think GE had a SWR > > protection circuit, at least I never had to work on one, I worked on > > a lot of Motorola protection circuits. GE did have power control. > > > > Receiver Sensitivity. > > > > Response> How can that be copied???? Technology improved letting > > everyone improve receiver sensitivity! > > > > Preamp is an option. > > > > Response> Everybody had that option! Guess they all copied it! > > > > Frequency Ranges (Like 150.8 mc.) > > > > Response> I have no idea what you are getting at here, the frequency > > ranges were/are set by the FCC, not Motorola! If you mean the > > frequency bands the radios covered, again physics have more to do with > > it than Motorola or GE and those bands go back in some form for as > > long as radios have been around. > > > > Size. > > > > Response> Right, while the overall footprint is close (but no cigar) > > the height of the GE radio is a 1/2 inch less than the height of the > > Micor, where is the similarity? Motorola-Charcoal grey, GE-Beige. > > GE Length 19.0 Width 11.75 Height 2.5 Total 558.125 cubic inches > > Micor Length 17.625 Width 13.0 Height 3.0 Total 687.375 cubic inches > > You do the math.... > > > > Weight. > > > > Response> GE 25 pounds. Micor 26 pounds. This is with mounting plates. > > GE's is very heavy metal plate and the Micor is a thin stamped plate. > > It's obvious that the actual GE radio weighs less than the Micor since > > the plates are so different. > > > > Gee, there are hardly any similarities now that I look at it..... > > Get real...... > > > > Kevin Custer > > > > Response> Gee, lets keep this up, I am having a lot of fun while > > bringing back some great memories! What this comes down to is you > > think Motorola developed all the good radio technology, simply not > > true! I have worked on both, I like both but prefer the GE radios. > > Show me an actual circuit that is similar, that's what counts! Some > > things like PA's and oscillators are so generic there is only one way > > to design them but there is a lot of differences between the Master II > > and Micor radios. If Motorola truly thought GE copied their design > > Motorola would have been all over GE, just like GE got all over RCA! > > > > In conclusion, Master II had a completely different case and different > > color, Micor had their transmitter on one side, the receiver on the > > other. GE had their exciter on the left front, receiver in center and > > audio on right front, helical resonators near the center back with the > > PA and heat sink in the very back, yeah very similar! Look at the RCA > > copy of the Master II if you want to see true "copy". > > > > Like you said, get real! > > Paul > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! 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