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"john graesser" wrote in message
... "gb" wrote in message ... wrote in message oups.com... Is there a best place to find or make a cheap power supply for a 50 watt mobile radio to use as a base station? Are computer power supply's good? I prefer linear power supplies for this size of radio, such as the Astron RS-12A. Plentiful at hamfest, surplus and eBay. IF you find an Astron that is broken and is offered to you for free (GRAB IT) .. its like being handed money ! Astrons are easy to repair (unless transformer failed - very rare), skip the Pyramids (many models have under rated heat sinks or electrolytic capacitors) Of course then there are the Pyramids that can function 24 hours a day 7 days a week from the day you buy it. Mine has been on (except for the occasional blackout) for over 6 years. At this apt I turned it on when I moved in and haven't touched it since. John - I have heard that recent Pyramid linear models have addressed these design issues. (I have no "hands-on" personal experience to verify these design changes by Pyramid). Unfortunately, the used models I see at the hamfests are the earlier models that I have repair experience with and had these design problems. Possibly someone will eventually have a web based differentiation guide for these Pyramid models. gb |
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