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AMPHF - FS: EIMAC (JFJ) "M400" 4CX250B PAIR For Sale: EIMAC JFJ M400 Power Tetrodes. Look exactly like the 4CX250B and in excellent shape. Heaters test good with 6.3 VAC and Internal HI-POT (Gas/Leakage) passes at 1KV and over 400 Meg Ohms between all elements. Perfect for that 2 meter amplifier or working 6 Meters when it opens. Good for all the HF bands, too. Made by EIMAC with stenciling (JFJ M400) for a medical or industrial company. These come with Ceramic chimneys and Plate rings. Will add tested spare 4X150 or 4CX250B as a Free Bonus. $49.00 shipped in the USA. Add $21 for a pair of sockets. Will be well protected for shipping. See my other ads: Simpson, Ungar, Test, Drake and other items. Will combine shipping, where possible. Your check or USPS MO or PayPal; I am gd in QRZ. Just let me know that payment is on the way and I will get you the Tracking number. Listing #1759247 by WA1BRI Submitted on 02/17/26 Submitted from 47-199-186-130.fdr01.stgr.fl.ip.frontiernet.net Click to Contact Back to Previous Page

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