[TMC] Sideband Exciters

[Meir Ben-Dror WF2U]

Chris,

Nick is correct of course, but as TMC master oscillators are concerned, besides the VOX series, you can also use a PMO if you need only one output. Another advice: the older SBE-2 is a pain in the neck, but the SBE-3 (and up) is much better and if needs to be, easier to align.
Here is my multi-mode 350 W TMC system I put together; I had enough space in the rack to mount the GPR-90RXD receiver in it as well, and a homebrew dual speaker panel, for single rack integrated station. I have a PMO in there, because the VOX I have needs some work, but I'll keep the PMO in the system.

73, Meir WF2U
Landrum, SC

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On Aug 27, 2021, 1:59 PM, at 1:59 PM, Nick England <navy.radio at gmail.com> wrote:
>Yes you also need a variable master oscillator like the TMC VOX
>(O-330).
>Otherwise the SBE can run crystal-controlled and has a switch for
>multiple
>crystals. For many government and commercial applications, crystal
>control
>was fine.
>Hey, it’s TMC.
>
>
>On Fri, Aug 27, 2021 at 1:31 PM Chris Bolkan <bolkyboats at gmail.com>
>wrote:
>
>> Hi TMC lovers!
>>
>> I have been looking at a few TMC transmitters on the history site and
>> am confused about something. It seems that most of the systems have a
>> master oscillator (0-330 or something like that) in addition to the
>> SBE exciter (SBE-3 or 3 or whatever)
>> I am hoping to assemble a complete working transmitter at some point
>> if it ever becomes possible to obtain the components, but at this
>time
>> I know precious little about what is actually required to assemble a
>> working transmitter. I thought based on reading and images of the
>> controls on the SBE's that they contain the required oscillators and
>> are self contained. My question is do they? Or is the 0-330 master
>> oscillator required in addition to the SBE to have a fully
>functioning
>> exciter, or is the "master" oscillator an "extra" that allows
>> synchronization of multiple transmitters and receivers and so forth?
>I
>> apologise if this is an ignorant question. I suppose I could
>> eventually figure it out if I read enough on the history site, but
>> it's not always easy to figure everything out looking at just manuals
>> without an understanding of the original deployment and (intended
>use)
>> for these devices.
>>
>> Thanks in advance!
>>
>> Best regards,
>> Chris
>> KI7NXY
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>-- 
>Nick England K4NYW
>www.navy-radio.com
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