• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • Click here to find out how to win free radios from Retevis!

FS: Rm Italy KL-503HD

NightThumper

South of Pittsburg
Nov 8, 2017
655
1,554
153
This was purchased 3/24/2021 from CopperElectronics. This is the. HD version (a little difficult to find these days). Brand new in box never turned on. Included with the amplifier will be a 120mm x 120mm fan with Anderson powerpole connectors and a 2.5 feet power cord with pin terminals on one end and an Anderson Powerpole SB50 on the other end. (10 gauge silicone tinned copper wire).

I’ve posted a picture of power output using my other KL-503HD. The pin terminals have been hexagon crimped and the powerpole connector has been “flood soldered” then shrink wrapped. The cooling fan is from my KL-703. I replaced the fans with higher quality ones.

Do NOT over volt or over drive! You will let the smoke out.

Asking $220. Price includes paypal and shipping CONUS. Email/PM me here.

Will be posting a DX500 with Fan Kit and a KL-203-P soon.

Thanks
Brad
 

Attachments

  • D6A4F924-867A-4526-9728-008EA8C43151.jpeg
    D6A4F924-867A-4526-9728-008EA8C43151.jpeg
    2 MB · Views: 56
  • E3FE1F30-6BC0-4F2F-85CC-186CE3C00273.jpeg
    E3FE1F30-6BC0-4F2F-85CC-186CE3C00273.jpeg
    1.9 MB · Views: 56
  • D5C37D0E-6833-4B51-8B98-E395F36E6C5D.jpeg
    D5C37D0E-6833-4B51-8B98-E395F36E6C5D.jpeg
    1.6 MB · Views: 60
  • B56BDC5E-E719-47B5-B1C5-ADFABC1B2AD2.jpeg
    B56BDC5E-E719-47B5-B1C5-ADFABC1B2AD2.jpeg
    1.2 MB · Views: 56
  • 99B7C3F4-B6A7-43B9-96E4-2F695402AF3D.jpeg
    99B7C3F4-B6A7-43B9-96E4-2F695402AF3D.jpeg
    952.3 KB · Views: 66
  • 2A36862B-BD4C-4557-8DA1-17137CED6657.jpeg
    2A36862B-BD4C-4557-8DA1-17137CED6657.jpeg
    723.4 KB · Views: 66
  • 2A661BDC-27E5-47DA-ACC1-4533695DBCDD.jpeg
    2A661BDC-27E5-47DA-ACC1-4533695DBCDD.jpeg
    1.4 MB · Views: 58
Last edited:

What do you think you will git out of the 503 power wise? I have the 503 never had the 503H.

88radio has this on their website. You’re not going to see 450 pep on SSB….just not going to happen. I would think you’re going to see similar numbers to the ones I posted for the 503HD maybe 50 less
  • Frequency - 20-30 MHz
  • Input energy/power - 12-14 A
  • Input power - 1 - 6 W
  • Input power SSB - 2-12 W
  • Output power - 250 W Max
  • Output power SSB - 450 W pep Max
  • Mode - AM-FM-SSB-CW
  • Fuse - 3x10 A
  • Preamp - 26 dB
  • Output power level - 6
  • Electronic switch
  • Inversion polarity protection
  • Size - 170x295x62 mm
 
Last edited:

dxChat
Help Users
  • No one is chatting at the moment.