05-15-14 16:06 Roy Witt wrote to Ed Vance about Resurrected   
      
    RW> @MSGID: <5375EB02.447.amtradio@capcity2.synchro.net>   
    RW> Greetings Ed!   
   Hi! Roy,   
      
    EV>>> I'm thinking the Finals in that TX were 810's in push-pull.   
    EV>>> Can't remember what tubes they were Modulated with.   
      
    RW>>> 12AX5s?   
      
    EV>> No, more like 833's in the Plate Modulator section on the rack.   
      
    RW>> The tube I mentioned would have come after the 833s.   
      
    EV> When I first saw "12AX5s?" I was thinking about a tube such as a   
    EV> 12AX7 which is a 9 pin minature tube.   
      
    RW> Did I say 12ax5? There's no such tube listed in my 1977 Radio   
    RW> Amateur's Handbook, but there is a 12AX7A listed. It is a dual   
    RW> triode used as a class B amplifier tube.   
      
   Yes, see above after my first paragraph.   
      
   Tom found a Link but the site didn't have any details about that tube,   
   only the $1.00 US price per tube.   
   That's why I started wondering if you were talking about a tube used to   
   Plate Modulate a CB rig, 2.5Watts, not the 500Watts needed for the 1KW   
   TX used at the High School.   
      
    EV> The 12AX5 wasn't in my 1976 A.R.R.L. Handbook, so I tried Searching   
    EV> to see what kind of tube it was.   
      
    RW> 8^)   
      
    EV> I gave up when none of the Results for the searches I did said   
    EV> anything for the 12AX5, all they were for were the 12AX7 tube.   
      
    RW> Which is what I had mentioned, if I called it right. Otherwise   
    RW> that is what I meant.   
      
   See what You wrote after my First Paragraph above.   
   -snip-   
    RW> I remember having some tube-type Motorola VHF mobile radios   
    RW> that I thought were too large to put in a car. They were run by   
    RW> remote control with 99% of the radio mounted in the trunk and   
    RW> you only had a control head and mic under the dash...   
      
   You're talking about those Two Way Radios used in Police Cars, Fire   
   Trucks, City Works, Taxi Cabs, etc...   
    RW> The Motorolas I mentioned above had two sets of crystals in   
    RW> them. One that received the base station and one that   
    RW> transmitted on another frequency, presumably the base station's   
    RW> receiver, aka duplex. They had a couple of channels setup like   
    RW> that and about 4 channels with simplex frequencies in their rx   
    RW> and tx. That was late 50s or early 60s.   
      
   A and B Channels? and they're not Duplex, they are Simplex Push To Talk   
   Radios.   
   Unless you got something from Motorola fancier than the usual Mobile   
   Radio the Services above used in the 1960's when I was a Dispatcher   
   for City Works.   
      
   IIRC those Radios came in 30Watt, 60Watt and sometime in 1965 the City   
   bought some General Electric 100Watt Mobile Radios.   
   -snip-   
    EV> If the USS Enterprise video You saw showed 'Radio One' You probably   
    EV> saw one of those Patch Panels. What was nice about them was the Male   
    EV> N?? Connectors had a collar that was pulled back to connect to the   
    EV> Female Connector on the Panel. A lot easier than twisting the collar   
    EV> on a PL-259 on to a SO-239. -snip-   
      
    RW> To me, the male N connector is more complicated to connect to a   
    RW> female N connector than a 259 does with the 239 female   
    RW> connector. At least it is straight forward to me as to who gets   
    RW> what.   
      
   Outside of the Ships I were on I have never seen a N Connector   
   manufactured as I described above - with a Collar that was Pulled Back,   
   Push the Connector On the Female N Connector on the panel, and Release   
   the Collar and the built in spring pushed the Collar forward, and it   
   moved forward it pushed some Ball Bearings into the Recess on the   
   Female Connector to Lock it in place.   
   To Remove the Patch Cable from one place to another, Pull Back the   
   Collar and Pull the Cable Off the Female Connector.   
      
   The N Connectors I've seen in Civilian Life had Screw Threads just like   
   the PL-259/SO-239 Connectors that most equipment I've seen have on 'em.   
   -anip-   
    EV> But it is on Amateur Radio Frequencies, and those 'Electronic   
    EV> Hobbyist' that used Yesau Tranceivers, and probably still do on our   
    EV> Ham Bands fit the Description above.   
      
    RW> Well, I don't have a Yesau xceivr, but I do have a Kenwood   
    RW> TS-520 which is in the same ballpark as say, a Yasau 101?. I   
    RW> never did see any advantage to building something I can buy off   
    RW> the shelf. That would be like building a Model K Ford when   
    RW> there are much better models offered for sale.   
      
   I met someone who like his Yesau FT-??? because he could run 100W AM   
   on 11 Meters, the guy really bragged about his rig.   
      
   During that time frame I noticed the FT-xxx XCVRS still had a position   
   on their Band Switch for the Old 11 Meter Ham Band, and the TS-xxx rigs   
   didn't have that selection on the Band Switch on the front panel.   
      
   I knew someone with a TS-520 and learned it was a read good rig, so in   
   the 1970's I got a TS-520S and added the DS-1A DC To DC Convertor, and   
   bought a Cinch-Jones Connector - Wired it to the Physical Connections   
   on the C-J Connector, not the Pin Numbers from the Kenwood Schematic   
   for their Connector manufactured for them in Japan, and went Mobile   
   with my rig.   
   -snip-   
    EV>> ... Why don't sheep shrink when it rains?   
      
    RW>> They're pre-shrunk. Sheep used to be the size of a camel.   
      
    EV> Hey!, that's nice, I like that.   
      
    RW> Just don't take up smoking sheep's wool...it smells just as   
    RW> bad.   
      
   Nine Months after I started Smoking, I Quit to save $25.00 US to send   
   off for a Heath-kit VX-1 Electronic Voice Control (VOX) to use with my   
   DX-40.   
   I didn't like the way the Relay dropped out and back in as I was   
   talking, so I used it for awhile as a Transmit On/Off switch by turning   
   the knob on it.   
      
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