QTH.COM Ham Radio Classified Ads: TUBES - Swap amateur radio HF VHF equipment buy sell trade on line

FS - PentaLabs 572B tube: This is a spare 572B tube that was in storage. It’s a Pentalab tube, and ordered from PentaLabs two years ago. The tube has about 15 minutes of usage just to confirm operation. I’m asking $100 shipped, PayPal preferred.; Listing #1762055 - Submitted on 03/15/26 by Callsign WE9N - IP: 99-25-237-150.lightspeed.rcsntx.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Eimac 4x150a $25.00 shipped: Eimac 4x150a
I know nothing about it . It was included in a estate i bought .
$25.00 shipped; Listing #1754202 - Submitted on 12/30/25 by Callsign KG4WPW, Modified on 03/15/26 - IP: 70.sub-174-218-48.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Two new tube sets for Collin’s 516f-2: I have 2 brand new never used (tested only)
solid state replacement rectifiers for the
Collins 516f-2 power supply. These run very
Cool and will not get much warmer than your
body temperature. These are direct plug in with
no modifications needed.
Price for both new sets $75.00 shipped to your with.; Listing #1762003 - Submitted on 03/14/26 by Callsign N3QK - IP: 99-169-95-133.lightspeed.dybhfl.sbcglobal.net; Click to Contact -- Send this Ad to a Friend
Econco Closing its doors: Get ready Microwave Power Products has announced that they will close Econco. May 1st is the last date to get a tube. Radio World has an article. Kennetron is the only rebuilder left?
73; Listing #1761846 - Submitted on 03/13/26 by Callsign W7GS - IP: c-68-56-222-190.hsd1.mi.comcast.net; Click to Contact -- Send this Ad to a Friend
Want: 8875 Tube: Want 8875 tube.; Listing #1761602 - Submitted on 03/11/26 by Callsign N8FVJ - IP: 71-214-106-17.orlf.qwest.net; Click to Contact -- Send this Ad to a Friend
FS: RCA 4X 57 & 3X 58 Tubes: All test strong. $15 + $5 shipping.; Listing #1761485 - Submitted on 03/10/26 by Callsign N8FVJ - IP: 71-214-106-17.orlf.qwest.net; Click to Contact -- Send this Ad to a Friend
NEW OLD STOCK 4CX250 W SOCKETS/CHIMNEYS: I BOUGHT THESE YEARS AGO TO BUILD A 6 METER AMP BUT GOT A GOOD DEAL ON A KING CONVERSION. ALL PARTS ARE NEW BUT THE BOXES WERE LOST FOR TUBES AND CHIMNEYS. THIRD TUBE IS STILL IN ORIGINAL BOX. $450.00 SHIPPED WILL ACCEPT PayPal you pay fee or POSTAL MONEY ORDER.; Listing #1761359 - Submitted on 03/08/26 by Callsign WA1UWX - IP: c-73-143-252-6.hsd1.ma.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RF Parts - Pair of 3-500ZG Tubes: SOLD PENDING PAYMENT -
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Have NOS - Pair of 3-500ZG tubes - ( see photo )
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$395 plus shipping - $28
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Payment via ZELLE, M.O. or personal check when clears....
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Note: more of my items-put my call in SEARCH and click SEARCH
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Thank you,
Tom Stack - WQ5J -
tom.stack102443 at gmail.com
**********; Listing #1761287 - Submitted on 03/07/26 by Callsign WQ5J, Modified on 03/08/26 - IP: 104-53-68-31.lightspeed.rcsntx.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Lot of 4 JAN 813 Transmitting Vacuum Tub: Lot of four vintage 813 transmitting vacuum tubes from storage. Includes military JAN tubes from RCA and Westinghouse. These were used in ham radio transmitters and RF amplifiers.
All tubes are intact with no cracks and the getters appear good. Filaments were checked with a meter and all show continuity.
Tubes have been stored for many years and are sold as untested beyond filament check.
Great for ham radio transmitter projects, restorations, or collectors.
813 tubes were commonly used in high-power RF transmitters and are getting harder to find.
See photos for condition. $400.00; Listing #1761199 - Submitted on 03/07/26 by Callsign NONE, Web Site: https://I don’t have one - IP: 57.sub-97-191-196.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
PAIR OF Used General Electric 6146Bs: Here is a pair of GE 6146B RF Amplifier tubes, tested good on my TV-7D/U tester. $40.00 plus postage, aakim* $40 plus postage reimbursement, Payment preferred by Zelle, USPS money order, check, PyPl “friends and family”, personal check,; Listing #1761140 - Submitted on 03/06/26 by Callsign W1RC - IP: pool-72-93-118-72.bstnma.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend