I suggest running 2 MASTR-II 110W power blocks in phase with a combiner network on the input and output. This would give 200-250W output with about .5 - 1W in.
My current single block on the continuous duty heat sink gives an honest 150W at the moment so this may also be enough for your needs. I recently had to replace it because my Tripplite PR-40 went mid-evil on the first block I was running so I transplanted a mobile block into the repeater chassis. The problem is you will need 13.8 volts at about 50 amps minimum for the supply to run 2. You can float a Deep Cycle battery across an Astron 7, 12 or 20 as a make shift "Big Ass Capacitor" which will work as long as you don't have 100% duty cycle use on the repeater. You would kill the battery in about 1 1/2 hours constant key down and it would take about 8 to recharge with the Astron 20. But if this doesn't bother you... The project is cost effective. MASTR-II series mobile radios can be had for Free to $50 depending on where you are. and the Exec-II uses the same power block for the 110W version. Batterys are approx $60 at Wal-Mart. If you do not have a Astron, you can try using an old switch mode supply from a computer but the noise generated may not be desireable. "wn1b8" <[EMAIL PROTECTED]> wrote: > > >Greetings, > >As a result of our recent power supply failure we are accessing our >options. � > >Thanks to all of you who have replied to my search for a TPN1041B >power transformer. A couple of the responses suggested contacting >Peter Dahl for a quote on repairing or replacing the failed >transformer. �I did do that and would like to report that the >response I received (from none other than Peter, himself) was >extremely prompt and helful. He answered all of my questions >regardless of their simplicity or relevance. > >Anyway, one of the options we would like to explore is conversion to >a solid state PA deck. �So, I would like to tap the collective >wisdom of the list and hear what brands and models people like, and >conversely, which to avoid. This is a 2 meter repeater and its PA >needs to be in the 200 watt range with 10 to 15 watts drive. > >Thanks, and 73. > >Scott Madison, WN1B/8 > > > > > > > > >Yahoo! Groups Links > > > > > > > > __________________________________________________________________ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
