Greetings Ed!   
      
    RW>> It probably won't interfere with a standard TV either. At least   
    RW>> not one of recent manufacture.   
      
    EV> If I did try using the Sixer again I would talk to my neighbor first   
    EV> to ask them to let me know if I was causing any RFI to them.   
    EV> -snip-   
      
   Good idea to give them a heads-up before they're wondering what's   
   happening.   
      
    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.   
      
   The tube I mentioned would have come after the 833s.   
      
    EV>> The Rack Cabinet was over 6 Feet tall for the TX.   
    EV>> -snip-   
      
    RW>> That would house a complete 2mtr repeater, with tuned antenna   
    RW>> cavities.   
      
    EV> Sure, a Rack that tall could hold a lot of equipment, I could put   
    EV> my old Hallicrafter SX-42 and Heath TX-1 "Apache" and have room to   
    EV> spare to put a Antenna Tuner that uses Plug In Coils and still space   
    EV> for other things, if I had them, to mount in the cabinet.   
      
   When I aquired my Motorola repeater, it was mounted in a cabinet that   
   big. Space in a mtn top facility also includes height limitations on the   
   equipment housing. I removed everything from that cabinet to one half   
   its size. It was stuffed with everything needed to be self contained, even   
   the tuned cavities.   
      
   Having previous experience with a club repeater on a mtn top in this type   
   of cabinet, I know what it's like to travel 40 miles one way, traveling   
   in freezing rain to service a repeater that a mouse had built a nest in   
   the pwr supply. So I didn't want to have to do that with my repeater. It   
   was still on Mt Palomar with a different IDer when I was last in SD...   
      
    EV>> You're thinking VHF/UHF, the Discone was HF.   
      
    RW>> If they were xmitting on the same frequency or in close   
    RW>> proximity to it, they'd use tuned cavities. If they were using   
    RW>> one band to xmit on and another band to rx on, they wouldn't   
    RW>> need tuned cavities. i.e. crossbanding. I have a radio that   
    RW>> will do that. It receives on one band and repeats it on   
    RW>> anothere, VHF to UHF...   
      
    EV> All I can remember about the Antenna connection to RXs were that   
    EV> there was a Panel on the wall (Bulkhead) that had several columns of   
    EV> Male N?? connectors for hooking up the HF RXs in the Radio Room to   
    EV> the Antennas using Coax Patch Cables for each RX on the panel.   
      
   I'd love to have one of those Patch Panels...   
      
    EV> IIRC Each Column was for a certain Frequency range.   
      
    EV> I don't know if anything like a Tuned Cavity was in the Panel, I just   
    EV> thought Filters were inside the Panel, but each CW Operator position   
    EV> had Full Break-In.   
      
   A tuned cavity is a filter. Most repeaters have two for each rx/tx in the   
   system. One pair for each rx/tx is tuned to allow a frequency to pass and   
   it will block all others. Mine were tuned to pass 449.125tx and the   
   other pair were tuned to pass 444.125 and block all others.   
      
   I had a friend who was a mtn-top technician and he had the equipment to   
   tune cavities like that, so he tuned mine. His repeater and mine were   
   linked together, but his was on Mt San Miguel.   
      
    EV> The TXs were in different compartments aboard ship and not in   
    EV> Main Comm, or close to it.   
      
   I watched a programm that covered the USS Enterprize from pre-WW1 to   
   present day. They showed all of or most of that during the program, which   
   was on the Smithsonian channel.   
      
    EV>> I got out of the Navy in 1962 and the only thing I could remember   
    EV>> aboard the Ships I were on that used tuned cavities was the Radar   
    EV>> sets.   
      
    RW>> A user of frequencies in close proximity?   
      
    EV> I am not knowledgable about RADAR, but think they were on freqs in   
    EV> the SHF Range. A Radar Tech showed me some small boxes that were some   
    EV> components of the radar set, and IIRC they were Copper boxes with   
    EV> pieces of Brass Tubing and other parts inside them. -snip-   
      
   That sounds like a 'waveguide' setup, which would be used in a radar   
   system.   
      
    EV>> Up 3 or 4 Levels above the Flight Deck there were some 300MC/s UHF   
    EV>> gear but I can't remember if they were Transceivers or Transmitters,   
    EV>> all I remember about them was they had a 4X150A Final that the ET's   
    EV>> (Electronic Technicians) had to replace after so many hours of use.   
      
    RW>> Whether it was worn out or not.   
      
    EV> Yes, because those rigs needed to run when Aircraft were aloft.   
      
   I wonder if they had a means to test those tubes in case they might be   
   needed as a backup...Or did the Navy supply have tons of them, like their   
   toilet seat supply?   
      
    EV>>> And then there was a person who had both a Citizens Band Call for   
    EV>>> his self and a 27 MC/S Business Band Call for his business, who   
    EV>>> would sometimes use the Business Band RF Amp when he talked on the   
    EV>>> Citizens Band Frequencies (Channels).   
      
    RW>>> I don't recall there being a business band on 27MHz...   
      
    EV>> Sure was, it had a FCC Class Letter but I can't remember if it was   
    EV>> Class C service or what.   
      
    RW>> Class C was remote controlled hobby toys. Model airplanes, etc.   
    RW>> Still used today, btw...   
      
    EV> O.K., Class C was for Hobby, maybe the 27MC/s Business Band was   
    EV> Class B?   
      
   I remember seeing Class A - I forget?, when I looked for the CB service,   
   aka Class D...   
      
    EV>> I think the old 365MC/s CB was called Class A???, IIRC there were   
    EV>> four Citizens Band Classes A through D, one of them was for 27.255   
    EV>> Radio Control Model use that was shared with 11M Amateur Radio   
    EV>> Operators back then. -snip-   
      
    RW>> The FCC gave RCC more bandwidth when CB was made available.   
    RW>> There are still some spaces between CB channels for that. I   
    RW>> thought that 27.255 was/is channel 23 and channel 24 is 27.235   
    RW>> or 27.245 on the new bandplan of 40 channels.   
      
    EV> The 27.255 frequency is the only one that's stuck in my head, I ain't   
    EV> up to date on anything Citizens Band as You know.   
    EV> -snip-   
      
   It's not in my head either, but I do recall that one or two channels that   
   were added to the original 23 on the 40ch update, fell between channels 22   
   and 23...   
      
    RW>>> Thus the name, bootlegger...   
      
    EV>> No, Bootlegger's are anyone transmitting on any unauthorized Freq.   
    EV>> or using any unautorized Mode, or unautorized Power Level.....   
      
    RW>> You know, I looked all over for a defintion of that phrase, but   
    RW>> all I could find were references to moonshiners.   
      
    EV>> Just like bootleggers in Kentucky and elsewhere who ran Stills to   
    EV>> make Moonshine Whiskey without a Government Distillary License to do   
    EV>> so. -snip-   
      
    RW>> 8^) That terminology deosn't apply today, as there is no   
    RW>> license required to operate on the CB channels.   
      
    EV> I thought we were talking about People Transmitting on some Frequency   
    EV> that they don't have a FCC License for, whether its Outside the CB   
    EV> Channels or On Amateur Radio Bands or any other Band.   
      
   That has been going on for decades. i.e. Commercial fishermen using CB   
   channels, even though they have a license to use Marine channels.   
      
    EV> In my mind, those folks, what ever Power Level they are using, if   
    EV> they are not authorized by the FCC to use those freqs, are   
    EV> BOOTLEGGERS here in the USA, plain and simple. dit dah dit dah dit   
    EV> dah  (PERIOD). -snip-   
      
   I would call someone with a CB radio who advertises a business over the   
   air a bootlegger. Since there is no requirement to be licensed to use CB,   
   they're not bootleggers until they do something like that.   
      
    EV>> I've haven't got a Pink Ticket from the FCC (yet), but I did get a   
    EV>> White Slip of Paper from he FCC just after I built my Heathkit DX-40   
    EV>> on around September 1958.   
      
    EV> -snip-   
      
    EV>> I never could figure out why no one ever answered me on 7173 KC/s   
    EV>> when I called CQ, but I made QSO's all the time on 3720KC/s just   
    EV>> fine, until I got that white slip in the mail from the FCC   
    EV>> Monitoring Station in Laurel, Maryland that said that my signal had   
    EV>> been heard on 14.346MC/s.   
      
    RW>> 8^) Was that a common problem with those radios?   
      
    EV> The problem was with The Builder of the Kit, not the design of the   
    EV> Kit.   
      
   Don't feel bad Ed, I did somoething similar with my first Allied Radio   
   stereo amplifier kit, c1960. I sent it to AR for service and they fixed my   
   screw up...   
      
    EV> ... Why don't sheep shrink when it rains?   
      
   They're pre-shrunk. Sheep used to be the size of a camel.   
      
      
       Have a day!   
      
            R\%/itt - K5RXT   
      
   --- GoldED+/W32 1.1.5-31012   
   --- D'Bridge 3.99   
    * Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)