Hello all I have for sale KJ6KO 6 watt in 60 watt out amp 28 volt dc this is version 1 no T/R switching you supply here is the link to page with specs ( http://users.innercite.com/kj6ko/forsale.htm#KJ6KO Stuff For Sale ) this unit has heavy duty heat sink and weighs 10lbs asking 175 plus shipping or local pickup N6RMJ PAT