[TMC] Sideband Exciters

Nick England navy.radio at gmail.com
Fri Aug 27 21:13:42 EDT 2021 

Eugene’s attachment came through here OK. I also got Meir’s photo
attachment a few messages ago.

Sometimes the interweb pneumatic tubes work OK. Sometimes not.

On Fri, Aug 27, 2021 at 8:14 PM Richard Knoppow <1oldlens1 at ix.netcom.com>
wrote:

>     I don't think the list takes attachments. Looking at the list
> folder in my computer I don't see any attachments. I am not sure
> but I think Mailman may not take attachments on any of its lists.
>
> On 8/27/2021 2:23 PM, W2HX wrote:
> > I had made a little spreadsheet of some differences I found in the
> manuals a few years ago.  Hope the file makes it through.
> >
> > Sent from Nine<http://www.9folders.com/>
> >
> > ________________________________
> > From: BERMAN <triodes at optonline.net>
> > Sent: Friday, August 27, 2021 2:52 PM
> > To: Meir Ben-Dror WF2U; Nick England
> > Cc: George W1LSB via TMC
> > Subject: Re: [TMC] Sideband Exciters
> >
> > Meir, thanks for the input on the SBE-series of exciters.
> >
> > I have a model SBE-2A (not SBE-2) exciter integrated within my GPT-750.
> Do you (or anyone else here) know how the SBE-2A differs from the SBE-2 or
> the later SBE-3?
> >
> > I ask this as I was unaware that the SBE-3 and later variants were less
> of "a pain in the neck" when compared to those units that were of the
> earlier pre-SBE-3 design.
> >
> > 73,
> >
> > Bruce, W2XR
> >
> >> On August 27, 2021 at 2:18 PM Meir Ben-Dror WF2U <wf2u at ws19ops.com
> mailto:wf2u at ws19ops.com > wrote:
> >>
> >>
> >>      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
> >>
> >>      ⁣Get BlueMail for Android
> >>
> >>      On Aug 27, 2021, 1:59 PM, at 1:59 PM, Nick England <
> navy.radio at gmail.com mailto: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 mailto: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<http://www.navy-radio.com>
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> --
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
>
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-- 
Nick England K4NYW
www.navy-radio.com

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