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Title: Hallicrafters SR-42 Vibrator Post by: W6TOM on March 23, 2011, 12:56:16 PM I have a Hallicrafters SR-42, 2 meter AM transceiver. It has an internal vibrator, 4 pin, 2 small pins and 2 large pins, it will run off of 12 volts. Does anyone know what type of vibrator this is and where I might find one?? Thanks!! W6TOM Title: Re: Hallicrafters SR-42 Vibrator Post by: WQ9E on March 23, 2011, 01:43:05 PM The one in mine is marked Mallory Type G1501.
Antique Electronic (and others) sell solid state replacement units that will probably work OK. Otherwise it will have to come from a hamfest or someone's junk box and vibrators aren't the most reliable component every produced. It might be easier to just operate the SR-42 from 120 VAC and use something else mobile :) Title: Re: Hallicrafters SR-42 Vibrator Post by: WB2EMS on March 23, 2011, 04:36:09 PM Or use a small mobile inverter to run the radio off 120 VAC. Probably more efficient than the original vibrator supply too.
Title: Re: Hallicrafters SR-42 Vibrator Post by: WB6NVH on March 23, 2011, 04:50:44 PM If the vibrator is still present, but doesn't start or run well, you can hook it in series with a regular 40-60 Watt lamp bulb and use your wall socket to clean the contacts up. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
The cost of a solid state vibrator is about what an SR-42 is worth and they seem about as robust as a canary anyway. Those 4-pin vibrators are very common and you ought to be able to source a good one for about $ 5. But...who's running VHF AM mobile these days? :o |