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

Wanted: Eimac SK-406 Chimney: Looking to buy 4 ea. Eimac SK-406 chimneys.
Please let me know what you have. Thanks for looking.
WILL NOT RESPOND TO DIRECT EMAILS - DON'T BOTHER!!; Listing #1755588 - Submitted on 01/12/26 by Callsign N6ELO, Modified on 01/29/26 - IP: 174.sub-97-131-154.myvzw.com; Click to Contact -- Send this Ad to a Friend
EIMAC AIR-SYSTEM SOCKETS - REDUCED: MAKE AN OFFER
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I have available for sale 2 used EIMAC Air-System sockets. These will work for the 4-400, 3-500 and similar based tubes. The tube sockets are tarnished, but in good physical condition. One for $45 shipped in the USA, or both for $80 shipped in the USA.; Listing #1756904 - Submitted on 01/26/26 by Callsign K3DUA, Modified on 01/29/26 - IP: pool-108-50-43-148.bltmmd.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
For Sale 2 new 4-400 tubes: best offer N7AMK; Listing #1757153 - Submitted on 01/28/26 by Callsign N7AMK - IP: 216.24.59.39; Click to Contact -- Send this Ad to a Friend
KENRAD VT-231 6SN7GT $85 plus shipping: Used tube. Tested good.; Listing #1757147 - Submitted on 01/28/26 by Callsign K5DKZ - IP: syn-076-183-146-186.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
7 6146 tubes $95 plus shipping: Box of seven 6146 tubes of various manufacture. All made in USA. All test good.; Listing #1757146 - Submitted on 01/28/26 by Callsign K5DKZ - IP: syn-076-183-146-186.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
CETRON 572B/T160L: USED TUBE tested good. $50 plus shiping; Listing #1757102 - Submitted on 01/27/26 by Callsign K5DKZ - IP: syn-076-183-146-186.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
572B TUBE NEW from RF PARTS: NOS white base $50 plus shiping; Listing #1756906 - Submitted on 01/26/26 by Callsign K5DKZ, Modified on 01/27/26 - IP: syn-076-183-146-186.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
Raytheon 5703WA Triode ( Lot of 3 ): Subminiature Triode - NOS - Unmolested, original full length leads.
Tube data available on Internet…
Offering as collectables - hence As-Is / No Returns - no testing performed.
Price: ( Lot o 3 ) $20.00 Shipped ( CONUS ); Listing #1756745 - Submitted on 01/24/26 by Callsign W6SDW, Modified on 01/27/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Sylvania JHS 5718 - ( Lot of 3 ): Subminiature Triode - NOS ( 1952 ) in their original cartons.
They have unmolested, original full length leads.
Tube data available on Internet…
Offering as collectables - hence As-Is / No Returns - no testing performed.
Price: ( Lot o 3 ) $20.00 Shipped ( CONUS ); Listing #1756747 - Submitted on 01/24/26 by Callsign W6SDW, Modified on 01/27/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
SELL: Sealed JAN 7203 EIMAC 4CX250B: Selling JAN 7203 Eimac 4CX250B. Sealed, unopened can.
$60 including shipping to U.S.A.; Listing #1756989 - Submitted on 01/27/26 by Callsign W3CMP - IP: c-174-54-50-12.hsd1.pa.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend