[Amps] Harris RF-104 was Amps Digest, Vol 59, Issue 56

[David G4FTC]

Robby,
 
The RF-104 is not normally set for "ground keying line to tranmit" operation. However all that's needed is a 1N914 or similar diode inserted in the Program and Junction Board behind the front door. (REAL Amplifiers have doors!)
 
See my website.
 
http://www.g4ftc.co.uk/amplifiers/rf104/home.htm
 
Also at the bottom of the page are details of what pins on the D type connectors at the rear are the keying line.
 
I'm a bit curious about the parasitic suppressor. The amplifer should have one fitted as standard - see the photo at the top of the webpage and it's the large black tubular resistor attached to the top cap of the tube pointing to the right. There is actually a wire running down the centre of the resistor which is the inductance. I've never seen any parasitic problems with mine.
 
Hope this helps.
 
73s David G4FTC
 
> From: robby at route2.pe.ca> To: amps at contesting.com> Date: Tue, 27 Nov 2007 14:43:07 -0400> Subject: Re: [Amps] Amps Digest, Vol 59, Issue 56> > Actually my basement is grade level on the side that faces the water so I> can watch the water skiers and salt water vertical :-) It was a challenge> even so. I am not sure of the history of this amplifier so I am not ready> to plug it into the wall. I have a 3-1000Z parasitic suppression kit from> Richard and will see about installing it or perhaps part of it. There was> no glitch resistor with the kit for some reason. It is not known how the amp> was keyed up (PTT) but there are a couple of DB25 connectors on the rear. I> guess I need to spend some time reading.> > 73,> > -Robby> > -----Original Message-----> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On> Behalf Of amps-request at contesting.com> Sent: Tuesday, November 27, 2007 1:00 PM> To: amps at contesting.com> Subject: Amps Digest, Vol 59, Issue 56> > Send Amps mailing list submissions to> amps at contesting.com> > To subscribe or unsubscribe via the World Wide Web, visit> http://lists.contesting.com/mailman/listinfo/amps> or, via email, send a message with subject or body 'help' to> amps-request at contesting.com> > You can reach the person managing the list at> amps-owner at contesting.com> > When replying, please edit your Subject line so it is more specific than> "Re: Contents of Amps digest..."> > No virus found in this incoming message.> Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.8/1153 - Release Date: 11/26/2007> 9:08 PM> > > > No virus found in this outgoing message.> Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.8/1153 - Release Date: 11/26/2007> 9:08 PM> > 
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