[Milsurplus] TBS question

[Bob Wilder]

Marty:  Have been told by several WW2 radio operators who were on LST's that
they had the TBS mounted on the bridge (above the wheel house) and would use
it at night to chat between ships.  One guy said that worked good until one
night a station back in the states broke and demanded to know why they were
on the stateside station's frequency.

Bob, AF2HD

At 09:21 AM 9/14/2003 -0400, Marty R's GI-stuff haunt wrote:

>Bob et. al.  The LST-325's TBS is the only one I've seen
>
>It HAS to be the world's largest transciever.  HAS to be.
>
>I submit it's the reason so many 808 tubes wound up in surplus as nothing 
>else I've seen ever used 'em.  Since TBS a Radiomarine & 808 RCA, it doesn't 
>take Perry Mason.
>
>TBS ran 60-80 mcs which was 1936 super-secure UHF.  Had acorn tube front-end
>
>Must weigh 200#s for ~40 watts out... that's a hip shot & needn't be
>since I've a TBS book.
>
>Now MBF musta come in '45 since 7 pin mini.s there like 6AQ6 which I didn't
>know were in print then.  It, like MAW, raises question why it dint get
>a JAN tag.
>
>MBF clearly built for what was then an often-found seagoing power
>system.  110VDC.  And there was plenty of it on LST-325, at least 1 GMC
>6-71's worth.
>
>Why DC?  Short runs made on-ship transformer needs go away, variable 
>speed motors easy, & blacksmith could learn 'electric craft' overnight.  
>None of that steenking phase & power factor thinking req'd.
>
>And don't forget the electric industry was only 30-40 years old in 1940 & 
>110vdc was still everywhere on land.
>
>Plus, as someone sed, it was the pre-ww2 US seagoing standard.
>
>Sed b4, MBF gave all smaller vessels chance to talk to blue-water
>ships
>
>NOW...
>
>If you're gonna use ur MBF on 6M AM 110vac, use an isolation xfrmr
>
>Bob putting that TBS on 6m & sticking a MBF in an LCVP appears
>a swimmingly gud idea.
>
>Pun intended
>
>  Marty
>
>(anyone have just a MBF schemat.?  That's presently enuf for me)
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Bob & Carole Wilder
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