The first Mastr Pro I saw was in 1965 or 1966 ... GE had shipped it to the Los Angeles County Radio Shop. (One of my favorite hangouts at the time.)
I think the politics with that was after the bad name GE had made for themselves with the Transistorized Progress Line (TPL) the Mastr Pro showed the county shop guys all was not lost. I know, I was impressed. I bought my first Mastr Pro for use on the 450 ham band in 1967 I think. I had duplexed it, installed it in my then car, a 1961 Dodge Seneca (#1 ex police car) and used it for years. I retired it sometime in the late seventies. Mike (WA6ILQ), it is still here, complete with the Priority Search-Lock Monitoring (PSLM) Control head awaiting your arrival to be installed in your current museum piece. Neil - WA6KLA JOHN MACKEY wrote: > > Wrong. > The Mastr Pro came out several years BEFORE the Micor. > > "ac0y5" <[EMAIL PROTECTED]> wrote: > SNIP > > The MASTR PRO must have been copied from the Micor also, because it > > to is modular. A receiver module , a Exciter/ PA module, and a power > > supply. All modules are solid components. It is more than SOME Micor > > repeaters that I've seen. I think the Progress Line was some what > > modular, and so was some of the pre Micor Motorola's (trying to use > > some Very rusty brain cells). > > 73 > > AC0Y > > > > > > > > > > > > --- In [email protected], "Paul Finch" > > <[EMAIL PROTECTED]> wrote: > > > Hello, > > > > > > I look at it this way, they used the Micor to decide how not to > > build the > > > kind of transmitter Motorola did, the Micor is one of the most over > > > engineered radios ever. They over-engineered it so they > > (Motorola) could > > > use it in everything from mobiles to paging transmitters and > > paging link > > > receivers. I am not saying it's a bad radio, just has way to many > > things in > > > it that can go wrong. One example, switching the ground to turn > > the High > > > Band Micor transmitter on, WHY!? If I remember correctly they did > > not do > > > that in the UHF version, again WHY!? > > > > > By the way, If you switch A- to ground to key the exciter, why does > > taking the A- to the PA to ground take it off the air (output goes > > to zero)? (in a MSR2000. Some say that it is a cheep Micor) > > > > > I worked on a lot of Micors and GE's back when they first came > > out, I can't > > > see a lot of similarity between the two. If the engineers copied > > anything I > > > can't see it much! > > > > > > Buying a competitors radio is a common practice, Quintron/Glenayre > > bought > > > Motorola's radios and vise-versa, happens in every industry, not > > just with > > > radios. > > > > > > When you get into someone coping a design the RCA people copied > > the GE > > > Master II and had to pay big bucks when GE took them to court, RCA > > was > > > pretty much out of business after that. > > > > > > Paul > > > > > > > > > -----Original Message----- > > > From: Kevin Custer [mailto:[EMAIL PROTECTED] > > > Sent: Sunday, November 30, 2003 9:29 AM > > > To: [email protected] > > > Subject: [Repeater-Builder] GE Stuff..... > > > > > > > > > In the context of the difference between the Mastr II and Mastr > > Exec........ > > > > > > Virden Clark Beckman wrote: > > > > > > > The executive line does not have the dual squelch stuff that was > > the big > > > thing in 72 when that idea debuted... > > > > > > > > > > You mean when the GE engineers dissected the Micor to help build > > the > > > Mastr II? > > > > > > Motorola debuted the dual squelch in the late 60's..... > > > > > > BTW: No one needs to flame me on the first comment. I have > > recently > > > been introduced to two top engineers that worked for GE's Two-Way > > radio > > > division when the Mastr II was developed. Both fully admitted > > that the > > > Micor was used to help design the Mastr II. If you doubt this, I'm > > > sorry, but all you need to do is look at the facts: > > > > > > 5 LARGE Helical resonators. > > > 11 Meg I-F > > > Dual Squelch > > > Elementized Channel Oscillators > > > Power sensing RF protection > > > Numerous other things mechanical, electrical, and physical, but > > it's too > > > early to remember them all.... > > > > > > > > > Kevin Custer > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
