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

4CX1500B: 4CX1500B, original that came with my Alpha 8410. Sold the Alpha, solid stater amp. The other tube shorted out. Good emissions on my homebrew 6L6-4CX1000A adapter to Heathkit tube tester. $140 plus $17 USPS priority mail or best offer.; Listing #1741481 - Submitted on 08/30/25 by Callsign K3MD - IP: 70.44.117.128.res-cmts.snc.ptd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
For Sale 2 Eimac 3CX800 A7's: I have 2 Eimac 3CX800A7's for sale. These tubes were replaced by 2 new tubes in a Commander 2500 amplifier. The power output was the same as the new tubes installed. They have been stored in a climate controlled room for a couple of years. No longer need them as spares. Price is
$ 835.00 shipped lower 48 only.
Payment by postal money order or personal check. Tubes will ship once check clears. Thanks, Dennis; Listing #1740416 - Submitted on 08/20/25 by Callsign K4NV, Modified on 08/25/25 - IP: syn-024-196-225-085.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
3-500Z tube: 3-500Z tube tested and has full output. No name visible. $125 plus shipping.; Listing #1740946 - Submitted on 08/25/25 by Callsign KB9SI - IP: 251.sub-75-223-76.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
4cx800 tubes: I have 2 NOS TUBES. $450 a pair. I don’t have PayPal. Postal money order is fine; Listing #1732673 - Submitted on 06/12/25 by Callsign W4HRK, Modified on 08/24/25 - IP: 69.176.24.225.cable.modem.imctv.com; Click to Contact -- Send this Ad to a Friend
For Sale: Eimac 3CPX-1500A7 NOS: For sale is an Eimac 3CPX-1500A7 new old stock tube. Tube will come with two tube sockets, teflon chimneys and mounting hardware. Intentions were to build one more big amp but plans changed. $900 plus insured shipping.; Listing #1740050 - Submitted on 08/17/25 by Callsign KT5D, Modified on 08/24/25 - IP: syn-096-038-112-253.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
want 8874: Look for used working 8874.; Listing #1740292 - Submitted on 08/19/25 by Callsign WA5RS - IP: 99-85-12-245.lightspeed.nworla.sbcglobal.net; Click to Contact -- Send this Ad to a Friend
Vacuum Tubes for sale: Vacuum Tubes for sale:
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Note: Most tubes are NOS (New, but Old Stock).
All have been tested, and test good.
In most cases, more than one tube is available.
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Audio output
6AQ5/6005 - $6
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Sweep tubes
Zenith 6LB6 - $20 - Only one left.
6GE5 - $12
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transmit tubes
6CL6 - $8
2E26 - $8
5763 - $5
6883 (12 Volt 6146) - $20
1625 - $10
4-250 - weak - $19
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Diode / Rectifier tubes:
0 Z 4 - $5
1B3 - $1
3B24 - $8
5Y3 - $8
6AL5 - $4
5642 - 10,000 PIV, w/ wire leads - $5
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Regulator tubes
0A2 - $6
0B2 - $6
0C3/VR-105 - $6
0D3/VR-150 - $6
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Amperite Ballast tubes: $8 each
1H46
3-16
3-38
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Loctal tubes:
7A8 - $4
7B4 - $4
7C5 - $5
7F7 - $8
7F8 - $6
7H7 - $4
7K7 - $6
7N7 - $9
7Q7 - $5
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Prices do not include shipping from Florida.
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I am working my way thru the 1000+ tubes
that I have. If you need something let me
know.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1740240 - Submitted on 08/19/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Amperex 4-250 Transmitting Tube For Sale: Amperex 4-250 Transmitting Tube For Sale:
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The Amperex 4-250 / 5022 is a high power
transmitting tube, very closely related to
the well known 4-400, and a cousin to the
3-500. It fits the same socket as the 4-400
and 3-500.
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The major difference between the 4-250 and
4-400 is that the 4-250 has 250 watts of plate
dissipation, while the 4-400 has 400 watts.
They usually can be used interchangeably as
long as the plate dissipation is not exceeded.
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Weak 4-250
This 4-250 has low output.
It is not dead or shorted, but simply has low output.
It would be ideal for testing an amplifier. It is
NOT dead.
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Only $19 plus shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1740239 - Submitted on 08/19/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
6CL6 tubes For Sale: 6CL6 tubes For Sale:
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I found a stash of 6CL6 tubes. These are NOS.
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The 6CL6 is used as a driver tube in some of the
hybrid rigs, plus many of the older vintage rigs.
Many have found that low power output in these
rigs is due to a weak 6CL6 instead of weak finals.
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Buy these for only $8 each, plus shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1740238 - Submitted on 08/19/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Dead 3-500 Tube For Sale: Dead 3-500 Tube For Sale:
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I have a dead 3-500 tube available. It
no longer functions as an amplifier, but
the filament in it is good, so it could
be used for making a lamp, or any other
place where only the filament is needed.
Buy it for only $12 plus shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1740237 - Submitted on 08/19/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Send this Ad to a Friend