Thanks to all who replied. If I go the route of lowering screen voltage is it enough to lower just the screen on the 6146? And turn the mike gain down?
I like the idea of hiding the control shaft behind the crystal cover plug! Pat wa4tuk -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gary Blau Sent: Monday, February 11, 2008 7:45 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Ranger driving SB220 You can lower the power in a couple different ways. Lower the screen, run the PA on the low HV, attenuate the RF, etc. If you're driving an amp there's no advantage to running full power in the Ranger. In fact, you give up a lot of potential positive peak modulation capability, if that's important to you. I vote for lowering the screen and making it adjustable. Second would be running the PA on the lower HV rail. There are numerous articles on line for modifying the Ranger to do these things. g Patrick Thompson wrote: > How did you go about getting the RF drive from the Ranger down to a level > usable by the SB220? I'm thinking about something similar to get to the > 200-250 watt carrier level (or 800 to 1000 pep AM). I'm guessing the amp > won't need much more than 10-15 watts drive (40 to 60 watts pep AM) leaving > a little headroom. > > I thought about a homemade pad but that's a lot of heat to throw away. Maybe > a 3db pad and turn the drive down a little? > > I could lower the screen voltage but it would be nice to have the rig full > power when barefoot. > > Can you get by with just lowering the drive and microphone gain? > > Pat > wa4tuk ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1272 - Release Date: 2/11/2008 5:28 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1272 - Release Date: 2/11/2008 5:28 PM ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
