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

eimac 3cpx800 A7 pair: these tubes were in my Bird modded 76A. were tested by Dick at full output when i had the amp with him for some tune up work. this amp was never driven more than 600W out. i pulled these tubes and replaced them with a new set to keep these as a backup pair. the amp has been sold and these tubes are sitting here on the bench. they need a good home. $800 for the pair delivered.; Listing #1741748 - Submitted on 09/02/25 by Callsign W0TRD - IP: 173-18-58-121.client.mchsi.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
want 8874: Look for used working 8874.; Listing #1741722 - Submitted on 09/01/25 by Callsign WA5RS - IP: 99-85-12-245.lightspeed.nworla.sbcglobal.net; Click to Contact -- Send this Ad to a Friend
NOS 1L6 Tubes (Zenith Transoceanic): Hard to find pair of 1L6 tubes for the older Zenith Transoceanic radios.
Both are NOS/unused and test accordingly.
See photo.
$64 for the pair includes shipping & tracking.
*Payment via USPS "Postal" m/o*; Listing #1740503 - Submitted on 08/21/25 by Callsign KJ6NKX, Modified on 08/31/25 - IP: syn-174-083-251-235.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
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
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