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

Amp 4-400 Recon-Tested AND TUBE TESTING: TWO, 4-400 Amperex RESTORED and TESTED to 'like new' condition. AM BC Pulls
ENGINEERING BASED TESTING with full test data and LINEARITY GRAPH/EQUATION, all designed and tested by me, an R&D engineer
MONSTER heat sink INCLUDED
Video of the restoring and testing process thru Ytube link
$300 cash, P.O. MO or check after clearance. NO guarantee of any kind to Hobbyists. These are industrial and broadcast tubes, not hobby toys. Hams are known for destroying amp tubes.
NOT for sale to No Code Licensees UNLESS you can assure me you wont DIE. Have your Elmer contact me. You can DIE JUST PLUGGING IT IN.
Contact- email, send your phone #.
Pickup/Shipping E TN
Pickup preferred to prevent shipper from playing Basketball with the package.
Shipping, YOU determine the box and packaging and carrier, ship the box to me with a return ship label. UPS, Fedex or Postal.
TUBE TESTING
Currently set up to test 3/4- 400/500, others possible. Test fixture to 2 KV for "minimum distortion bias case".; Listing #1766494 - Submitted on 04/29/26 by Callsign K8BYP, Web Site: https://www.youtube.com/watch?v=nKq12OIVcXU - IP: mobile-107-77-233-110.mobile.att.net; Click to Contact -- Send this Ad to a Friend
FS: Eimac 8168/4CX1000A: Originally purchased as new/unused and was checked for output for a short time in my Collins 30S-1. This tube has less than 1 hour use.
Looks excellent. Asking $325 includes shipping to CONUS. Will accept check, MO, Pay Pal f/f, or goods and services if you pick up the 3% fee, will ship when funds clear.; Listing #1766427 - Submitted on 04/29/26 by Callsign K0EOA - IP: 172.58.11.220; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FS: Two new Lindal 6DS4 Tubes: Two new Lindal 6DS4 Tubes. $29.95 + $5.75 shipping to USA lower 48.; Listing #1766420 - Submitted on 04/29/26 by Callsign N8FVJ - IP: 71-214-51-64.orlf.qwest.net; Click to Contact -- Send this Ad to a Friend
WTB Eimac 3-500Z: Looking for a good working Eimac 3-500Z tube. Lost the filament in mine so now looking for a replacement. Email me if you have a spare that you would part with. Good on QRZ
Thanks,
Jack
KA4LGN; Listing #1766418 - Submitted on 04/29/26 by Callsign KA4LGN - IP: syn-075-136-042-088.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
6146 Tubes For Sale: 6146 Tubes For Sale:
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I have two 6146 tubes available.
They are NOT a pair.
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The first is an RCA 6146 A. It tests
at 98% on my Hickock 600 tube tester.
It is $15.
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The second is a GE 6146 B. It tests 111%.
It is $20.
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Prices do not include shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1766391 - Submitted on 04/28/26 by Callsign W8EK - IP: customer.mmmiflx1.isp.starlink.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
8874 Tubes - Excellent Condition: These 8874s were pulls from a 76PA I had to part out because I needed the transformer for something else. Tested for full power out +.
$450 each or 3 for $900.; Listing #1766105 - Submitted on 04/25/26 by Callsign K1FIE - IP: mobile-166-198-034-035.mycingular.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Raytheon RK-4D32 ( NOS ): Spares / Replacements for your vintage Collins 32V / Hallicrafters or Johnson Xmtrs ??
Have 2 in their factory sealed boxes - Will Ship “ Box-in-Box ”. AS-IS, No Returns…
( Unboxed tube is for reference Only... )
Price: $30.00 EACH Shipped ( CONUS ) from 92117
PayPal / USPS MO preferred - Check OK but no ship until cleared.; Listing #1764098 - Submitted on 04/04/26 by Callsign W6SDW, Modified on 04/24/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
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: $ 36.00 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 04/24/26 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FS: UNGAR SOLDERING IRON-1235-S: For Sale: UNGAR Model 1235-S soldering iron Heater in package.
Modular "S" for #750, 776, 777 Handles.
33 Watts 120vac/dc; Takes 1/8" tips.
800F./427C.--Have only two left of this model.
I have many other types of UNGARS, too.
Email me or see my other QTH ads for more.
$9.00 each: $16.00 for both plus $5.50 USA shipping.
Add the Matching Ungar handle for another $7.00
Your check or USPS MO. Or PayPal to: jtg4300 at yahoo.com
I am gd in QRZ.
Will combine shipping, where possible
See my other ads for Simpson, Drake, and other gear.
Your check or USPS MO; I am gd in QRZ.
Just let me know that payment is on the way and I will ship and get you the Tracking number.; Listing #1754562 - Submitted on 01/03/26 by Callsign WA1BRI, Modified on 04/23/26 - IP: 47-199-186-130.fdr01.stgr.fl.ip.frontiernet.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
NATO Milspec 8877 Ceramic Triode: This is a milspec Eimac 8877 ceramic triode, NATO# V06-0001-000 5960-00-313-6715 sh:2921
It fits perfectly into any 8877 socket since the OD is identical to consumer grade Eimac 8877. But the inner heatsink is 2X the surface area of Eimac consumer, and the heatsink metal itself is 50% thicker than Eimac consumer (see NATO-Consumer head to head heatsink photo)
It has been tested to legal limit power which it achieves easily. But it’s clear from looking at its physical characteristics that NATO wanted and got an 8877 that could be pushed harder, for longer, and in more extreme conditions.
The tube has been tested (anode characteristics consistent with being clipped into a rig for testing), but otherwise it appears to be in unused or very lightly used condition. Comes in original packing materials.
$839 shipped CONUS. Shipped UPS insured.; Listing #1765817 - Submitted on 04/23/26 by Callsign K1FIE - IP: c-50-189-24-238.unallocated.comcastbusiness.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend