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

I offer assistance in purchasing TUBES: Good day, friends!
I am US7UX. You can ask me about tubes (and other things related to amplifiers) made in the USSR ( nos ).
Visit my page - https://www.qrz.com/db/US7UX
respectfully !! 73 !! Oleg; Listing #1760719 - Submitted on 03/02/26 by Callsign US7UX, Web Site: https://www.qrz.com/db/US7UX - IP: 95.67.24.63; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
3-500z tubes: 1 Eimac 3-500z tube 75%+
Tested in a sb1000
New tube is 900 watts or so
This tube is 700 watts on 20 meters
It is not pulling excess grid current
I want to net 100.00
You pay shipping and fees
Also have a pair of Taylor 3-500zg used
I will list them soon based on output
They are doing 1000 to 1100 watts
We will see what the new tubes are doing
If interested I should know by Friday
I will in the area of 250 net for the pair depending on what the new ones look like; Listing #1760714 - Submitted on 03/02/26 by Callsign KE5FAQ - IP: 146.12.250.247; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Sylvania JHS 5718 - ( Lot of 3 ): Subminiature Triode - NOS 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 #1759627 - Submitted on 02/20/26 by Callsign W6SDW, Modified on 03/02/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- 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 #1759625 - Submitted on 02/20/26 by Callsign W6SDW, Modified on 03/02/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Eimac 7580W / 4CX250R: Offering this from recent estate tube lot - cosmetics indicate either NOS or very, very low hours.
The 4CX250R/7580W is the heavy-duty, ruggedized version. Like the 4CX250B, it has 6.3v filament voltage. They ( “typically” ) deliver more output in most linear amplifiers which use the 4CX250B.
My TV-3B/U tube tester doesn’t cover this one, so it’s sold As-Is / No Return.
- Additional Pics on Request -
Yours for: $ 40.00 + $10.00 Ship (CONUS) from 92117 - 6x6x6 box - 1-2 lbs.
PayPal / USPS MO preferred - Check Accepted, but no ship until clears.; Listing #1760692 - Submitted on 03/02/26 by Callsign W6SDW - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
wtb 3cx400a7....8874: anybody have a good used 3cx400a7 ie 8874 tube.
on a fixed income
would like to find in the 200 dollar price range if thats possiable
thanks for reading; Listing #1760624 - Submitted on 03/01/26 by Callsign K2DGR - IP: 25.sub-174-197-200.myvzw.com; Click to Contact -- Send this Ad to a Friend
JAN 6336B Tube: Here's another tube from an SK estate. This fella wasn't in the habit of keeping bad tubes. Other tubes have sold, and I have had no issues. This one looks to me like it's an NOS/NIB Tube. The other tube I have for sale (811a) is a used tube. $35, SHIPPED, CONUS. I accept PayPal, Zelle, USPS MO's, and checks (ships after it clears, and my bank says 3 to 5 days) I ship in ONE to TWO days, after receipt of payment, and sometimes, faster. Call/e-mail/Text 7A-9P, MST, 7 days a week if any questions. Text is best, as I am not always around a computer. Thanks!!; Listing #1760613 - Submitted on 03/01/26 by Callsign AB5ZA - IP: node-154-27-111-63.theglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
JAN 811A Tube (USED): Here's a tube from an SK estate. Other tubes have sold, and I have had no issues/complaints. This fella wasn't in the habit of keeping bad tubes. $35 OBO, plus shipping, or $35, SHIPPED, CONUS. I accept Zelle, PayPal, USPS MO's, and checks (ships after it clears my bank, which they say 3 to 5 days). I ship in ONE to TWO business days after receipt of payment, and sometimes faster. Call/e-mail/Text, 7A-9P, MST, 7 days a week, if any questions. Text is best, as I am not always around a computer. NOTE: I will pack these properly for shipment. I have another tube for sale, and that's why the boxes, got mixed up. Thanks!!; Listing #1760611 - Submitted on 03/01/26 by Callsign AB5ZA - IP: node-154-27-111-63.theglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
GU74B's with sockets: I have 4 GU74B's, 2 are pulls from my amp sold a few months ago which are still good. I used them in rotation. Also have 2 new and 2 new sockets. Will Sale as a whole lot or in sets. I will sell all for $900 Shipped or email me with offer. I have pictures of tubes I can send email. Thanks. 73; Listing #1758027 - Submitted on 02/05/26 by Callsign KG4WQP, Modified on 02/28/26 - IP: 67-60-142-40.cpe.sparklight.net; Click to Contact -- Send this Ad to a Friend
For Sale Vintage Transmitter Tubes: Have the following tubes for sale. Shipping is free.
1ea. New 826 Tetrode. $20.
2ea. 807’s $20
2ea. 837’s $20
5ea. 1625’s $25
2ea. Jan 5R4WGB $25
The tubes look very good. I have no way of testing.
I will entertain offers for the lot at a reasonable reduced price.
I accept PayPal, USPS Money Orders and checks.; Listing #1759511 - Submitted on 02/19/26 by Callsign W8BJ, Modified on 02/28/26 - IP: 157.sub-174-206-35.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend