NEW UNUSED AMPEREX 4-400A / 8438 GRAPHITE PLATE HIGH POWER RF TRANSMITTING TUBE

Description

NEW UNUSED AMPEREX 4-400A / 8438 GRAPHITE PLATE HIGH POWER RF TRANSMITTING TUBE
NEW UNUSED IN THE ORIGINAL CARTON AMPEREX 4-400A / 8438 GRAPHITE PLATE HIGH POWER RF TRANSMITTING TUBE - AS USED IN THE JOHNSON VIKING 500, DESK KILOWATT, AND OTHER TRANSMITTERS AND AMPLIFIERS
Photo is the actual AMPEREX 4-400A
Buyer to add . shipping USA.
PLEASE READ
:
I use either a calibrated Hickok 539C, TV-7D/U, or for new design tubes a calibrated B&K 747. Test results must exceed the tester minimums by at least 10%. I attempt to match all the tubes sold in pairs to within 7% of the test readings. Because I don't know the operating condition of your equipment, tubes are sold "as is". I may have several of the tubes being auctioned, and may NOT use a photo of the actual tube.
There may be some larger type tubes that I do not have the equipment to test for other than filament continuity (I'll put that in the listing).
INTERNATIONAL BIDDERS:
Because I can only test for technical things like transconductance, gas, shorts, etc., I cannot test for things you might think you don't like (tone, response, etc.).
UNDER ALL CIRCUMSTANCES
: if you purchase any tubes
YOU
agree to be responsible for any return postage.
QUESTIONS?
please ask them before bidding.
PAYMENT INFORMATION:
You can either use the "PAY NOW" button at the end of the auction, or I'll send you an invoice.
I try to ship most items within 2 business days of payment.
eBay NOW REQUIRES A SIGNATURE UPON DELIVERY FOR ALL SHIPMENTS OVER 0..
INTERNATIONAL BIDDERS:
I accept payments from International Bidders for amounts up to 0. For larger amounts, contact me.
TEST
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