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Date Posted by Category User IP

2016-04-20 (UTC)


HF Amplifiers

Amp Supply LK-500ZB Linear

This sale is for an Amp Supply LK-500ZB linear amplifier. Bought at the Rochester hamfest 4 years ago from the original owner. Power supply and 3-500ZG’s replaced in early 2014 just before putting it in the new operating positionA. Only about 20 hours transmitting operational time since then. Beautiful condition, flawless front panel and no scratches or blemishes on the case. A couple minor chips that you can see on the front cover rim.

Included is an assembled Harbach SS-100 module with instructions. I intended to install this, but never got around to it.

Harbach Electronics PM-800 replacement Power Supply Module.
QSK Jennings vacuum relay installed for fast CW/VOX performance.
Panel lights installed on the meters for sure visibility.
New parasitic suppressors installed.
Relatively new (~2.5 years) matched pair RF Parts 3-500ZG output tubes installed.
All bands 160-10 meters (10M installed on AUX position).
Full legal limit of 1500 watts on SSB, 1200 watts on CW with 100 watt input.

Prefer local pickup in the Corning area of New York. Will consider meeting at a halfway point of up to 80 miles if you are more than 150 miles away. I really do not want to ship this, as it is heavy (~60 pounds). Buyer would pay all shipping costs by packed weight for two boxes—one for the amp, and another for the 3-500ZG tubes.

$825 Firm, PayPal or Cash. If local, cash is the better option on delivery. Email to: patrick [at] for further communications. More Photos available at

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