Re: My HT-45 HP-45 project.
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Looks great. Did you add the heat sinks to the transformer? It's a nice job.
Nice looking amp! John
I mentioned this in Rick's thread about his new power supply. /g/HallicraftersRadios/topic/ht45_loudenboomer_working_now/106322290
So far I've:
Replaced a resistor in and verified PS operation, with ~24 V on the transformer primary and 110k load, makes ~750 V. This translated to 3750 V with 120 V input.When connected to the amp and with the tube drawing 120 mA per design, modeling, with the Duncan Amps PUS Designer II, shows the specified ~3000 V.
Replaced the open Ig and Ip metering resistors.
Added a protection diode for the meter.
Hopeful for today.
Get it dusted out. Gotta buy a new dust brush. Grandkids made off with mine.
Temporarily wire RF deck AC separately to run heater and blower.??
Run HV off a variac with the tube biased to conduct at low voltage and run the anode red-orange for a while.
In time, I'll hook the nano VNA up and see how input and output look over 3.5-30 MHz range. It will be nice to learn if the amp is OK for any of the WARC bands.?
Photos: I have all the covers, screws, etc.
Note the Jones plug on the RF deck power cable. 3 kV @ 330 mA goes through this connector. Pins are on the cold end.
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