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

FS: March & Bengali Paddles: FS: 2025 March Magnetic Iambic Paddle, Vy FB SN0581. $285.00 shipped.
FS: Bengali Paddle, SN0439. Unique single lever-double action design. Age unknown. With walnut finger pieces. $225 shipped. OBO.; Listing #1769132 - Submitted on 05/25/26 by Callsign K0PJ, Modified on 05/30/26 - IP: 172.59.99.226; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
WANT: Filament Transformer: I am looking for a filament transformer that delivers 25 to 30 Amperes at 12.6 volts (350VA).
OTher windings are not needed. Please send dimensions, size and price, with pictures via e-mail via QTH.COM ad.
Thanks for reading my request.; Listing #1769501 - Submitted on 05/29/26 by Callsign K9AU, Modified on 05/30/26 - IP: syn-097-087-010-045.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
For Sale Pair 3CX800A with test data.: This is a pair of spare 3CX800’s I bought a while back to have as spares and sent to Frank Stelloh K9AU for test & evaluation. Data shows PO for 20W & 40W drive along with all the other parameters . I’d like $875 for the pair shipped & insured. Test data is in my QRZ listing but you can email me & I’ll send it to you.; Listing #1768010 - Submitted on 05/14/26 by Callsign KK4HP, Modified on 05/30/26 - IP: h165.115.89.75.dynamic.ip.windstream.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
WTB 12BZ6: Need a few tubes to finish a rig 12bz6, 12be6, 6jh8. Prefer calls to emails but to eliminate to scammers ONLY emails from here all others will be ignored. Please state price shipped to 15442.
73 Bob K3EMF; Listing #1769382 - Submitted on 05/27/26 by Callsign K3EMF - IP: 43.sub-174-242-33.myvzw.com; Click to Contact -- Send this Ad to a Friend
3-500ZG Tube -New in Box: Bought from DXengineering for a HF amplifier I was going to build.
I decided to give up due to the parts I need and I can not find them.
It has the parameters with the specifications. Also I have some of the parts I was intended to use the, Simpson 2" mA meters one for the grid 500 mA ,the other one for plate 2A, also 2" Simpson 10 KV meter for plate voltage ,25uH
rotary inductor with turns counter, 350pF/2KV tune variable capacitor and the load one 1000pF/1KV,ATU-100 with 2"display assembled for the input circuit.Pictures are available if interested. Asking $275 for the tube and I pay the shipping,for the parts make me an offer.MO, Personal Check or cash if in person pick up.I do not have paypal.
Only QRZ.com contact,thank you for reading my ad.; Listing #1768477 - Submitted on 05/19/26 by Callsign AB2DP, Modified on 05/26/26 - IP: syn-047-230-000-203.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Eimac 8660 Tube - Lightly Used: Tested for full power out. Lightly used.
Just $299 shipped CONUS.; Listing #1769218 - Submitted on 05/26/26 by Callsign K1FIE - IP: d57-134-213-75.home.cgocable.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
8874 Tubes: Excellent condition, tested for full power out.
$399 each, or you can have the pair for $599 shipped. Stock up while you still can!; Listing #1769217 - Submitted on 05/26/26 by Callsign K1FIE - IP: d57-134-213-75.home.cgocable.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
2 Eimac 8877's: $950/each shipped and insured
2 excellent condition , full emissions Eimac 8877's. 2 new fresh test reports from Richardson Electronics showing better than new emissions value.
Tube#1
Date Code: 9234
Serial# HUU-532
Emission Value: 92
Tube#2
Date Code: 1016
Serial# BDB-0063
Emission Value: 103
New tube emissions value is an 85 so these are above that. Excellent tubes hence the price point. More pics and test reports available.
No Paypal most any other payment is fine. Also you can bring cash and pick them up. 1 has original box the other has a non original to the tube 8877 box. Test reports done this month 5/4/26. No funny business here I don't operate that way.; Listing #1767552 - Submitted on 05/09/26 by Callsign KC1TQN, Modified on 05/25/26 - IP: syn-024-177-141-194.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 -
Reduced Price now: $ 30.00 Shipped (CONUS) from 92117 - 6x6x6 box - 1-2 lbs.
PayPal / USPS MO preferred - Check Accepted, but no ship until clears.; Listing #1764099 - Submitted on 04/04/26 by Callsign W6SDW, Modified on 05/24/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Full Power Out Ceramic Triodes: All are in excellent condition (there are the usual minor blemishes on some of the heatsinks) and tested for full legal limit power out +. They are estimated to have between 75% to 100% of their service life left.
Eimac 8877 - $499
Eimac 8874 (2 available) - $399 each
Eimac 8660 (2 available) - $399 each
Eimac 8660 (NOS with original packaging, tested but otherwise unused) - $650
Units have been impedance tested, then fired up in either an Alpha 9500, 8406 or 76PA.
Shipping - $15 insured via UPS.; Listing #1768980 - Submitted on 05/24/26 by Callsign K1FIE - IP: d57-134-213-75.home.cgocable.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend