Transmitter Reciever TR9D

[arnaud]

Andy wrote :
"The other odd thing is the 10A/104870 number (I think that should be 10D, perhaps?) Are you sure it is not 10470 - no 8 between the 4 and 7."

Andy, you are half right:
This is indeed a ref No. 10A/10470 : I am very impressed about your knowledge...

If anyone have any explanation about that TR9D found in a Battle like Steve...

[MarkRS]

There is still something odd about the numbering.
TR9D should be 10D/10470, see here:
http://home.btconnect.com/gmb/airequip.htm
10D stands for Radio Receivers andTransmitters
10A stands for Miscellaneous Radio Equipment
See here:
http://aircraft-cockpits.com/ww2rafrefno.htm

If the one you found is designated 10A/10470, could it be a modified TR9D rather than a standard one?

Mark

[arnaud]

Here are some photos of this Transmitter/Receiver Type TR9D 10A/10470: not very nice but that a/c was shot down by Bf109 70 years ago!

The number was read on the label on the big box: you could see it on photo "075bis". Photo 58148 is probably the same type of Transmitter/receiver (not broken).

[Andy Saunders]

So, the 10A label is on the grey box? That makes a bit more sense. But I am not sure that the remains of the radio you have is a TR9D...the TR9F, G etc all look pretty much the same externally. In other words, the damaged one was (once!) very much like the one on the right in the box - except they would have had different stores reference and type numbers.

However, I think I might be missing something in my understanding of your explanation!

Are we SURE the damaged radio is TR9D....and are we SURE that it came from a Battle? If it is a TR9D that seems a bit unusual.

[MarkRS]

Here you will find photos of a TR9D in post #6:
http://www.vintage-radio.net/forum/s...ead.php?t=7136
The box is labeled Transmitter Unit Type T1098 10A/9216 serial number 924

Mark

[arnaud]

Hello,

The label comes from the grey big box which explains (I guess) why it is a 10A and not a 10D.
We could read on this label exactly this, no more no less:
"Transmitter receiver type TR9D
Ref. n° 10A/10470
AM.
Serial n° 6223"

This grey box and all pieces come from the same crash site: a Fairey Battle. We found the complete Merlin, complete radiator and the serial number of that Fairey Battle.
My question: "What was the type of transmitter receiver on that Battle? The label on the grey big box says TR9D. Is it right?

For Mark,

There is another piece from the same Battle. You could read on it with difficulties:
"Trans T1083
OII MO.. RANGED...
....00-136 KC/S....
N° 10A/...72
A..............."
"." means surface very damaged, unreadable.

I hope it helps... If you have any commet...

[Observer1940]

Originally Posted by arnaud

Hello,

The label ...

For Mark,

There is another piece from the same Battle. You could read on it with difficulties:
"Trans T1083
OII MO.. RANGED...
....00-136 KC/S....
N° 10A/...72
A..............."
"." means surface very damaged, unreadable.

I hope it helps... If you have any commet...

Arnaud

The usual wireless equipment on a Battle I was an R.1082 receiver and T.1083 transmitter. This agrees with your "Trans T1083" findings and Pieter's post.

Regarding the T1083 being used with the R1082, see http://www.duxfordradiosociety.org/r...082/r1082.html

Regarding a T.R. 9D, this was a R/T (radio telephony) set, with a very short range or distance, to speak with the ground or other adjacent aircraft.

If your Battle had a T.R. 9D as well, then he had both (W/T & R/T), as MarkRS has pointed out.

Most RAF fighters still had the T.R. 9D R/T during the Battle of Britain in August 1940 (see Andy's postings), whilst some had got a later Very High Frequency (V.H.F.) R/T set.

I have read somewhere that some Battle aircraft were used in Wireless training.

Mark

[MarkRS]

Here you will find the circuit diagrams for both the tramsmitter and the receiver:
http://www.tuberadio.com/robinson/Information/TR9D/

Mark

[MarkRS]

Arnaud,
T1083 is the correct transmitter for a Battle. See here:
http://www.binbrook.demon.co.uk/html/Fairey_Battle.html

It seems it was carrying both types of transmitter which would tie in with the ground support suggestion.

Mark

[arnaud]

Thank you very much,

I will read soon all documents mentioned in this thread as transmitter and receiver are new to me. This is very interesting...

But I have just one last question: why Andy and Pieter were surprised that a TR9D was used in a Battle? That Battle was shot down during the mission on pontoon bridges at Sedan on May 14th 1940. French troops were close to targets.

Bye