[Milsurplus] TBX

[Nick England]

The Navy Directory of Communication Equipment is your friend…..
https://www.navy-radio.com/manuals/94200.htm

It states -
RAS through RAS-5 are identical except for name plates. An IF mod kit was
available to convert narrow BW receiver 46080 to wide band IF BW receiver
46080A
https://www.navy-radio.com/rcvrs/ras.htm


Yes 65704 is the earliest TBX contract. TBX-8 contract dates were April
1944, March 1945, and July 1944 (?). I have no info on delivery dates.
https://www.navy-radio.com/xmtrs/tbx.htm


Nick England K4NYW
Chapel Hill NC
www.navy-radio.com

On Mon, Oct 19, 2026 at 2:12 PM Ray Fantini via Milsurplus <
milsurplus at mailman.qth.net> wrote:

> Think we had this discussion before; I propose that the TBX-8 was never
> used in WW2 arriving too late. Lots of examples of its use by the USMC
> during the Korean Conflict (War?) but I don't think it may have been widely
> fielded in WW2, lots of use of the early versions but not the 8.
> I have what maybe an original TBX, at least to its plate contract #
> Nos-65704 dated 16 March 1939 that I may have to get working for 3885 Net
> out at Hamvention for next year, did a WS-19 for NCS this year.
>
> Related:
> I also believe there is no difference between RAS receivers except the
> contract date. Lot like the TCS family. I have a RAS-5 and to compleat out
> the rack used a couple parts from a RAS-4 along with a couple coil packs
> for a RAS-1 Nos-70176 12-7-39 and it all appears to be the same to me.
>
> Distant Relative:
> Picked up a BC-197 TRF receiver that covers 100 kHz to 1.0 MHz and just
> suspect somehow its related to the RAS although its data plate says it was
> built by the "Technical Devices Corporation" once cleaned up will look good
> next to the RAS.
>
> A couple attached pictures.
>
> Ray F/KA3EKH
>
>
> ------------------------------
> *From:* milsurplus-bounces at mailman.qth.net <
> milsurplus-bounces at mailman.qth.net> on behalf of Hubert Miller via
> Milsurplus <milsurplus at mailman.qth.net>
> *Sent:* Sunday, October 18, 2026 9:38 PM
> *To:* Milsurplus at mailman.qth.net <Milsurplus at mailman.qth.net>
> *Subject:* Re: [Milsurplus] TBX
>
> >Subject: TBX
>
> The TBX was used in the south pacific quite a bit during the war by the
> Navajo code talkers. There are a number of photographs of them in >use by
> the code talkers.
>
> But, not in Phillipines by coast watchers.
> Also, the photos: note that the meters are only "white - face". Thus, no
> TBX-8. ( Just a footnote. )
> - Hue Miller
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