Macdoodle doo!

[Wavemeter]

Hi guys this is my latest acquisition. I suspect of Macgregor origin.

I’d love to know the true identity and the circuit diagrams for each of these if anyone has them ?
As you can see I have some missing components on the TX board.

The TX says Carrier wave and tone transmitter on the back of the PCB. The RX says CW receiver Mk2

I suspect the TX is a MK2 as well with the switches mounted through the board.

I would love to get these operational either flying or floating. Any help much appreciated!

[Wavemeter]

Ok so now I’m thinking the transmitter can be assembled as either Tone or CW hence missing components and alternate tag positions. Maybe someone has the assembly instructions?

[bluejets]

Perhaps an ED ...??

http://www.mccrash-racing.co.uk/sc/sc.htm

Some other ED info.....

http://www.modelenginenews.org/cardfile/ed_radios.html

Some valve circuits here also.....

https://norcim-rc.club/Radio19.htm

[Shaun]

They are MacGregor kit build units. I believe I may have the circuit diags . I'll have a look for you.

Shaun.

[Wavemeter]

Shaun that’s really kind thank you
Yes I’m convinced they are Macgregor
I’m guessing these may be the last Valve versions before the transistor or hybrid versions

[Shaun]

I've sent the pdf scans to Phil who will be putting them in the archive section of www.singlechannel.co.uk

Cheers,

Shaun

[Mike_K]

I am pretty certain they're the MacGregor Aeromodeller Ivy MK2 Tx and Rx kits, the last commercial Tx and Rx that used valves. If Shaun can't find the instructions, I know he let me have a copy a while back, but I can't find them at the moment.

Mike

[Shaun]

Sorted Mike,

I've unearthed the boxed, unbuilt MacG kits in my collection.. scanned the instructions..

Shaun

[Shaun]

Scans for Carrier Wave Transistor / Valve Rx

[Shaun]

Scans for Valve Tx.