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eHam Forums / HomeBrew / RE: Help with my 6146B homebrew CW transmitter please :-)
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on: December 10, 2012, 06:48:31 PM
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First, measure the plate voltage at the junction of RFC2 & R? 10k/5watt (plate voltage), then screen voltage at pin 6, then filament voltage (AC) pin 2 & 7 on 6AG7 . Take measurements at "tune" and "operate". Report what you measure. HIGH VOLTAGES...BE CAREFULL!
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eHam Forums / Elmers / Wheelchair power supply
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on: September 09, 2009, 05:34:06 PM
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Go to a sporting goods store (Cabella or Bass Pro Shop)or buy one online. They usually have 24 volt battery chargers for trolling motor batteries (fishing).
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12
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eHam Forums / VHF / UHF / Motorola TLD-5082a VHF amp
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on: June 26, 2009, 01:29:30 PM
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Sorry, but your wrong about it not working correctly. Motorola manufactured this amp class AB1. Look up the tube data. All I needed was to add a DPDT antenna switch and bypass the screen voltage switch (SCR). Amp. works great, with appox, 4 watts drive, rated at 600 watts continous! Great reports on the air!
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13
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eHam Forums / Elmers / LED replacements for dial lamps
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on: June 14, 2009, 04:06:33 PM
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Yes, they are available but rather expensive. You can make them yourself using the old lamp base, a 1/8 resistor and a small LED. I did this in my Dentron MLA2500 amp.
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15
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eHam Forums / Amplifiers / Motorola Hi-voltage cable
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on: March 31, 2009, 08:11:57 AM
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I am in need of a high voltage cable from a high power VHF Motorola PURC or Micor amp, cable part # 30-82903ho2, for an amp I am converting to SSB.
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