Good questions, Fred! From their dimensions I'm guessing they are switchers. I could not find the info either.
They look like they are designed to go into an equipment rack, not on a desk top. But I bet you could put rubber feet on those tabs easily enough. Color me old fashioned (I still like spending an afternoon on a horse or pounding brass with a straight key), but I avoid switchers no matter how much people claim they are quiet and I also avoid fans at every opportunity. I have several Astrons, not because they fail, but because they provide quiet (electrically and acoustically) power and redundancy. Should one ever fail, the other can keep the equipment humming, even if at slightly reduced output power. Ron AC7AC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Fred Townsend Sent: Sunday, May 06, 2012 10:56 AM To: [email protected]; [email protected] Subject: Re: [Elecraft] Power Supplies Hi Mike: Thank you for sharing about the Bulldog supplies. I have never heard of them before. My first reaction to the pictures is sooo ugly only its mother would love it. The spec sheets are clear but leave out a few things. Maybe you know. If it is a switcher what is its noise specification? The mounting tabs look like they would scratch the desktop. Are there rubber feet? Where are the power pole connectors? I guess you would run it with a Rigrunner. I didn't see any mention of certifications. UL? CE Mark? I like to buy American. Where are these made? 73 Fred, AE6QL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Sunday, May 06, 2012 9:22 AM To: [email protected] Subject: Re: [Elecraft] Power Supplies I recently purchased a Bulldog RDC-55 55A power supply from Rivergate Distributing. It's compact, runs cool, is very quiet, looks good on an oscilloscope and was designed to be used in a high-RF environment. I cannot honestly state that I have been running it for twenty years without a problem, but those that have seem to find them trouble-free. I think it's a shame that more people don't know about them. .. http://www.rivergatedist.com/PowerSupply.htm Mike Alexander - N8MSA [email protected] ----- Original Message ----- On 5/6/2012 6:12 AM, [email protected] wrote: Good Morning Ya’ll This morning my Astron SS-30M (used regularly for 15 years) went south in a puff of smoke and voltage on the meter was fluctuating around 10VDC. No damage to the K3. WHEW! I pulled out my Astron VS-50M (haven’t used in 15 years) and its voltage was also fluctuating a bit (maybe needs to reform caps?) (I’ll try it later on a ... should I say ... a radio I will not worry about too much ... or build a load for it). At a local swapfest last weekend a seller had several Astron power supplies that he was selling as parts units. He commented that they were unreliable. That being said, what are the groups recommendations for a power supply? 73, Mike WA5POK ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
