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HF Amplifiers

Displaying ads 1 to 10 of 225 ads in this category.
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 Vacuum high voltage capacitors   
Hi everybody!
I will sell vacuum capacitors according to the following list and
contractual prices close to the prices of the store for each item
and even lower ~30$US each.
Payment on Pay-Pal ut5rp at te.net.ua
With questions about price, payment and
forwarding by e-mail or phone/Viber +380 67 699-17-05
25pF x 15kV 2pieces
50pF x 15kV 3piece
Thank you for reading the ad and a possible purchase for
offered price.
73's de Dmitry UT5RP since 1959


Listing #1763082 - Submitted on 03/25/26 by Callsign UT5RP - IP: 188-163-101-191.broadband.kyivstar.net
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 Relays REV-15 75oHm 1500watts to 650mHz  
Hi everybody!
Selling absolutely NEW REV-15 relays factory packed at a price of $30 per one. Number of relays (more than one or four together) weighing up to 1Kilo parcel shipping costs will be ~25$(to U.S.A.) by Nova Poshta, with insurance and tracking number. Relays absolutely new, working voltage is 24-27Volts, 75oHms, supports 1500 Watts of power until 650MHz, minimal life 12 years when working in any device. There are needed number of new relays for sale. When purchasing a quantity (more than 5 pieces), a discount is possible by agreement. Payment on Pay-Pal ut5rp at te.net.ua Discount is possible! All questions buying and payment by E-Mail or tel/Viber +38 067 699-17-05 Thanks for reading ad and for a possible purchase for offered price. See my other ads.
73's de Dmitry UT5RP


Listing #1763081 - Submitted on 03/25/26 by Callsign UT5RP - IP: 188-163-101-191.broadband.kyivstar.net
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 SPE 2K-FA
Serial # 163600724 I bought this amp new but have been using it only as a backup amp for the last few years. I have a another 2K-FA that I have been using in that time.
The amp looks great and functions just as well as it did the first day I unpacked it. The SPE 2K-FA is the best amp I have ever had.
3700. Photo's available.
Local pickup only or will meet halfway to a reasonable distance. Or will take it to Dayton in May.
Rick N4HU 678 6895316


Listing #1760522 - Submitted on 03/01/26 by Callsign N4HU, Modified on 03/24/26 - IP: 91.193.232.198
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 Amp Supply LK 500 160-15 meters   
Works good looks good
A good solid 1kw 50 watts drive on low bands 65 or so on 20 meters
Low grid current pull at 1 kw
3-500 zg tubes
I am looking for 850 I will not ship
I will drive up 250 miles or so to deliver
Some trades possible
Listing what I am looking for
Yaesu FT891 plus $
Icom 7100
Kenwood 480 sat $
Icom 5100 plus $ or other gear
Icom 2730 plus $ other gear
Ic7300 this one depends on radio and accessories
Thanks for reading
It will be up for about 2 weeks


Listing #1763055 - Submitted on 03/24/26 by Callsign KE5FAQ - IP: 146.12.250.247
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 For Sale: SPE Expert 2K-FA 2nd Edition  
I have an absolutely immaculate SPE Expert 2K-FA Amplifier for sale. The amplifier is in perfect working condition. The Screen is clear and bright, all buttons work 100%
Comes with interface cable from Dan Tassel for the Icom IC-7610.
Power output is as follows:
Low 500 watt
Med 1100-1200 watt
High 1500-1700 watt
All power measurements were done with a NIST calibrated LP-500, and a 50 ohm dummy load.
This has been extremely well cared for, always used ALC to ensure that it has never been over driven.
Built in Antenna tuner, supports 2 radios, and 6 antennas
Original boxes + carry bag included
Selling it is because I Inherited my dad's Amp, a OM2000A+. and no longer need
Asking $4200 shipped. I accept Paypal or pay by Zelle, cash, or money order and receive 3% discount
Amplifier can also be picked up in Sarasota, Florida


Listing #1762696 - Submitted on 03/21/26 by Callsign K4PRO, Modified on 03/24/26 - IP: 47-202-15-52.fdr01.ssds.fl.ip.frontiernet.net
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  **KPA500 RF Power Monitor/WiFi remote**  

**KPA500 RF Power Monitor**

*Real-time monitoring for Elecraft KPA500 owners*

Six critical parameters — Power, Voltage, Current, SWR, Temperature, and Band — displayed simultaneously on a high-contrast 256×64 OLED. No menu cycling. No squinting. 10 updates per second.
Built-in WiFi streams live data to any smartphone, tablet, or browser — no app required. One-time 5-minute setup. Access locally via *kpa500.local* or remotely via Tailscale from anywhere in the world.

✦ 500ms intelligent peak hold on power output
✦ WebSocket web interface with retro terminal aesthetic
✦ Remote Power ON/OFF and Operate/Standby control
✦ Over-the-air firmware updates
✦ OLED works independently of WiFi — always
Plug-and-play RS-232 connection. No amplifier modifications. Assembled and tested. Cables included.

**4″ × 2″ × 4″ · 9–14.8V DC · 100mA**

*Built by hams, for hams.*

---$199 plus $10 shipping




Listing #1763051 - Submitted on 03/24/26 by Callsign KV5J, Web Site: http://www.kv5j.com - IP: customer.mmmiflx1.isp.starlink.com
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 RF2K-S For Sale $4900 + ship
Purchased 8/2025, gently used about 160
hours.
Just back from a warranty repair of a manufacturers defect (LDMOS was not heat sinked properly .. now resolved).
$4900 plus shipping. Lower 48 only.
I’m a Flex Radio station and am going with the Flex PGXL.
Ed W2MKM
908-881-4567


Listing #1763041 - Submitted on 03/24/26 by Callsign W2MKM - IP: 76.117.215.19
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 Amp Supply LK 500 160-15 meters   
Works good looks good
A good solid 1kw 50 watts drive on low bands 65 or so on 20 meters
Low grid current pull at 1 kw
3-500 zg tubes
I am looking for 850 I will not ship
I will drive up 250 miles or so to deliver
Some trades possible
Listing what I am looking for
Yaesu FT891 plus $
Icom 7100
Kenwood 480 sat $
Icom 5100 plus $ or other gear
Icom 2730 plus $ other gear
Ic7300 this one depends on radio and accessories
Thanks for reading
It will be up for about 2 weeks


Listing #1763040 - Submitted on 03/24/26 by Callsign KE5FAQ - IP: 146.12.250.247
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 Mercury Lux Amplifier  
I have a beautiful Mercury Lux amplifier that I am selling because I decided to move to an amplifier with a hefty auto-tuner built in. I have never had it on the air but it is beautiful. (see the pictures) Located in Northern California - So you can pick it up or I can ship it via UPS. Asking $3,800 plus $85 shipping within the US. Payment via Paypal. Comes with power cable and manual. Runs on 115V or 230V power.
Contact Jeff AK6OK 916-205-2200


Listing #1763029 - Submitted on 03/24/26 by Callsign AK6OK - IP: 172.92.17.82
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 For Sale JK Phantom 40/20 yagi  
For Sale “. JK PHANTOM “. 4 full size elements (74 feet each ) for 40 meters . 5 Full size elements on 20 meters. With boom truss and balum 425 lbs on a 48 Ft double trussed 3 inch boom. Close to 40 Square Foot of wind load. Good for 100 mph.
New price is $8400 plus freight of $600-800
A $9000 plus antenna. Need a good tower to use this yagi.
I’ve got 3 of these. Will consider sale of one. Still assembled pre owned.
Will sacrifice for $4200.00. !!
Serious inquiries only will need to be disassembled. If you’re not familiar with a big commercial type yagis you need to study up on this yagi.
Call me if interested. I’m listed in details in this ad. Cash or personal check. Scammer please don’t call with same old message!!!
73
Loyd
WB4BMQ
“Sweet Home Alabama “


Listing #1762555 - Submitted on 03/20/26 by Callsign WB4BMQ, Modified on 03/24/26 - IP: syn-066-168-162-096.res.spectrum.com
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