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Hello All,
I own a TRA 931 also known as a TR48s with working battery and
various spare parts.
Currently the set is only partially working and seems as if there is
no BFO. Any help would be appreciated.
Jim VE3DDY (Ontario Canada)

Hi Jim,

I own a TRA 931 also known as a TR48s with working battery and
various spare parts.

Where is this called a TR48? I have never heard of that designation.

Tom Bryan

Tom I don't really know.
I know that RACAL was initially a South African company and a RACAL
is a South African Lynx type cat. Due to Sanctions in the 60's and
70's Racal went international to bypass sanctions.
It maybe that "TR48s" was the original SA designation. My set came
from South Africa and was sold to the Portuguese in Mozambique.
TR48s may be their designation. I came by it by capture and it
was "issued" to me.
It has some interesting antenna accessories one of which is a large
bobbin type spool that has a cord wound on it. The cord has a
multiple wire woven into it. You just spool out the cord, throw its
washer type weight over a tree limb and plug the pin on the end of
the spool into the antenna whip hole.
Maybe I have some rare rendition. :-) The serial number under the
plastic front face is 00024 so it appears to be an early issue of
the TR48s designation.
I have a set of manuals on the way from a friend in South Africa.
Jim

Hello Jim,

It maybe that "TR48s" was the original SA designation. My set came

I have heard of other radio made by Racal SMD with the TR designation. I
didn't know they had one for the Syncal 30. Racal South Africa later
became Grinaker, then Grintek. Grinaker equiment was marketed
internationally under the Milcom name.
There is a little bit of the company history here:

and here:

It has some interesting antenna accessories one of which is a large
bobbin type spool that has a cord wound on it. The cord has a
multiple wire woven into it. You just spool out the cord, throw its
washer type weight over a tree limb and plug the pin on the end of
the spool into the antenna whip hole.

It would be interesting to see a picture of the antenna

I have had a few TRA931 sets. It is one of my favorites.


Tom Bryan
N3AJA