Electronics > RF, Microwave, Ham Radio

Found a cheap source of quality air variable capacitors in the UK

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MrSlack:
£16.49 inc delivery for the following (Clansman TUAAM ATU):

http://www.ebay.co.uk/itm/321860429348

Nice bit of kit by the looks. It's an ATU for HF bands that operates automatically.

Made by Racal, it has three motor driven air variables in it with suitable measurement and servo circuits.

Someone did a tear down here: http://sigmatechnica.com/clansman-tuaam-antenna-matching-unit-teardown/

I'll do another tear down and work out the capacitance when mine arrives. If they're good I'm going to buy a few!

m100:
Yes, that works out quite a bit cheaper than these

http://mainline-group.com/collections/5720-tx5-high-power-airspaced-variable-capacitor-by-jackson-brothers

MrSlack:
Exactly!  ;D

If they're not the right values you can pad them out easy enough as well.

Gyro:
Wow, that takes me back!  :phew:

SeanB:
10 quid for the unit and 40 postage to me..........

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