Neil, I guess that last email got to the rest of you but I did not receive it! Guess it went to the great bit-bucket black hole in the sky!
Paul -----Original Message----- From: Neil McKie [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 03, 2003 6:08 PM To: [email protected] Subject: Re: [Repeater-Builder] GE Stuff..... Paul, You just can't win them all ... Neil Paul Finch wrote: > > Hello, > > After much thought, I did remember that the Master II was the > 11.2 MHz IF, it was the GE PE and MVP series handie talkies that > were 20 something MHz IF. Sorry, I made the goof. > > Paul > > -----Original Message----- > From: Jim [mailto:[EMAIL PROTECTED] > Sent: Wednesday, December 03, 2003 4:12 PM > To: [email protected] > Subject: Re: [Repeater-Builder] GE Stuff..... > > 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! > > > > Look at the knobs, and how they are recessed. Not to mention the > 'break-away' bracket! > > <snip> > > 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! > > > > Mighty, mighty close! > > > > > 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!) > > > > Basically, yes. > > > > > Dual Hysteresis Squelch. > > > > Response> May have gotten the idea from Motorola but did not copy the > > circuit. > > Yes they did. Look at the schematic. > > > > > > 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. > > > > Nope-Micor VHF was 11.7, MII VHF was 11.2 > > > > > 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. > > > > Actually, it's more band allocations than anything else... > The big thing about much of the above is trying to copy the specs so > that they could say that they meet the spec written by a Mot engineer. > > > > > 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. > > Thin stamped plate??? What Micor are you looking at? Every Micor bracket > I've seen uses the same thickness metal as MII's. > > > > > 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! > > Again, look at the schematics. > > 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! > > GE changed it JUST enough to prevent that. > > -- > Jim > > -------- > "The higher you are, the harder it is to pump." > -Cleveland Mayor Jane Cambell, after the big black-out of 2003 > > 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! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
