Hi Rag, What exactly do you want to know? The transformer is available as a spare part. 73, Val LZ1VB HiAnyone have changed or upgraded their acom 1000 transformer for HV and have any data? 73 LB3RE
91Beta xfmr orders are accepted by acom@acom-bg.com 73, Val LZ1VB _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/am
Gary, The HV diodes are usually made by a string of 1kV diodes. Every regular silicon diode "eats" 0.6V of the passed thru forward voltage and a HV string may "eat" 3 or more Volts. Most of the DMMs
Most probably it is just a matter of an incorrect expression and a single device containing a pair of transistors is used. 73, Val LZ1VB I notice the SPE 1.3K-FA amplifier is using a single LDMOS tra
Steve, I do not think that shunt resistors are necessary at all. But it would be better if you reduce the diodes number by using higher voltage ones. 73, Val LZ1VB Gday I am refurbishing the power su
Bill, The ACOM 2000A Manual (Specifications) clearly states: "1500W no mode limit. In continuous carrier modes for transmissions longer than 15 minutes, the optional fan must be mounted." You should
Dick, As you know, I am biased. I have to admit also that I have never touched Alpha 9500. My comments are based on its Manual only. You are right, the optional fan have to be installed on ACOM 2000A
Bill, No, this has nothing with overseas vs American makers. Only the place of sale matters. Remember the US manufacturers that used to make an "export only" models. And foreign made amplifiers can b
Yes, you could, but I wonder whether this would be legal, or just nobody cares. The FCC form 740 have to be filled when a HF power amplifier is being imported in the USA. The importer has to declare
else is required to make an HF amp meet FCC technical requirements ? Jim VE7RF As far as I remember, no more than 15 dB gain and no gain between 26 and 28 MHz. If DX5 meets those requirements, it co
Andy, The ARC fault means a sparking connection or a relay contact. Did you make sure that the amp is operating normally on the run without switching to the mult radio? Rule out an internal amp issue
Hello Paul, As you will put the step start circuit in the transformer primary, it will limit the transformer inrush current and thus all the voltages provided by the transformer - filament, screen, g