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

432 mast mount preamp: SSB Electronic 1067nf preamp. Mounted but never used. $ 550.00 Plus usps. Now priced about $ 950.00.; Listing #1750975 - Submitted on 11/28/25 by Callsign KA8DSS - IP: 99-18-100-105.lightspeed.gdrpmi.sbcglobal.net; Click to Contact -- Send this Ad to a Friend
100MHz-6000MHz LNA +22dBm P1dB: This LNA uses the qorvo QPL9547 which offers superior noise figure , gain and P1dB .
Due to its wide bandwidth it makes a great lab amplifier to be used with spectrum analyzers but also works great for ham radio use .
The unit is small enough to mount directly to a coax relay using a SMA barrel avoiding addiotional cable losses .
A build in LDO allows operation from 6 up to 30V
Since the 9547 is primarily designed for use in cellular infrastructure the noise figure sweetspot is in between 700MHz and 2700MHz , at 1.3GHz W2HRO measured 0.22dB NF , at 2.3GHz the typ NF is around 0.5dB , at 433MHz i measured 0.12dB using a 346A and N8973A at 144MHz NF increases to 0.35dB.
The sales price is $179; Listing #1750945 - Submitted on 11/27/25 by Callsign KG5JCC - IP: 67.221.134.4; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
23cm 700W Circuit Boards for MRF13750: Those were NXP demo PCB boards,the boards are made from TC350 and fit the MRF13750 , user needs to add a heatspreader ( i have a few available for $35ea )
$35 per board , have 4 available; Listing #1750929 - Submitted on 11/27/25 by Callsign KG5JCC - IP: 67.221.134.4; Click to Contact -- Send this Ad to a Friend
For Sale: Henry 4006A 6m amplifier: Henry Radio 4006A 6m Monoband Amplifier. Instant-On directly heated thoriated tungsten Filament Eimac 3CX3000A7. Ideal 6m EME and/or terrestrial amplifier. Updated for 100% duty-cycle digital modes and proven robust full-time during three consecutive ARRL EME contests. 6m monoband version of 8K Ultra. Includes Superior Electric Variac to precisely set Filament voltage. Output T/R relay updated to Gigavac G23WF (now over $900 by itself), High-power K1WHS Low-Pass Filter (LPF) with Jennings JCSF-50 vacuum capacitors & silver-plated wire-wound inductors in Forced-Air Ventilated LPF compartment. Includes New critical Spare Parts: both motor drives, control cable, relays, MDI power supply contractor relays, and power switch. With As-Built Schematic and component source documentation. $8,500 meet point up to 3 states away or $7,500 you pick up and transport from south-eastern Wisconsin.; Listing #1750885 - Submitted on 11/27/25 by Callsign KJ9I - IP: syn-024-211-016-019.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
rfconcepts 2-417 2 meter amp: rfc 2-417 amp condition abt 8.5 40 in 150 out $215 prefer pickup can demo if shipped plus shipping tom n3vs; Listing #1750759 - Submitted on 11/25/25 by Callsign N3VS - IP: 70.44.176.171.res-cmts.tnk.ptd.net; Click to Contact -- Send this Ad to a Friend
Spectrain RF Amplifier 2.3GHZ Pallets: 2304/2.3GHZ Spectrain RF Amplifier Pallets
Each Pallet Contains (3) XFR286 Lateral Mosfets
$100 Each (2) NOS RF Amp Pallets,
$25 Each (2) RF Combiners Boards (PQL)
$120 (1) Completed RF Amp 2.3GHz Typically 60 Watts
Working RF Amp Pulled from Service by local Puget Sound ham.
Includes SMA Transfer Relay
CAUTION: SHF 60 Watts is a lot of Power and RF Exposure Danger; Listing #1747696 - Submitted on 10/28/25 by Callsign KB7IOG, Modified on 11/25/25 - IP: c-76-28-150-66.hsd1.wa.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FS: PMT LCFM-7481 Amplifier board: Not sure what freq range this is built for but it's very well made. Asking $275 plus mailing.; Listing #1750586 - Submitted on 11/24/25 by Callsign W1JCW - IP: 23-92-13-217.wirestar.net.wirestar.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
TE Systems 0552G 6 Meter Amplifier: Sold pending funds
The TE Systems Model 0552G is an RF Amplifier subsystem designed to interface between a two-
way transceiver and an antenna. This product uniquely integrates a high power RF amplifier with
a very low noise GaAs FET receive preamp thereby providing performance unachievable
heretofore. During transmit the unit functions by linearly amplifying the transceiver output
signal up to the specified power level. when in the receive mode it performs like an LNA
by amplifying the received signal with minimum noise figure. $300 plus shipping.; Listing #1750576 - Submitted on 11/24/25 by Callsign W8EMD - IP: syn-045-037-215-188.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
23cm 750W Pallet: Completely assembled all you need to do is add the MRF13750; Listing #1750320 - Submitted on 11/22/25 by Callsign KG5JCC - IP: 67.221.134.4; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
23cm 750W Pallet: Completely assembled all you need to do is add the MRF13750; Listing #1750276 - Submitted on 11/21/25 by Callsign KG5JCC - IP: 67.221.134.4; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend