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Author Topic: power supplies  (Read 742 times)
KC8VCB
Member

Posts: 102




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« on: December 03, 2002, 01:43:25 PM »

i'm new ham and was going to buy a small power supply for my 2-meter radios. this other ham told me instead he told me he is going to give me a little one and to save my money and get a bigger one since i will need it for a hf rig. is the mfj-4035mv any good? thanks

73,
kc8vcb
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WA4PTZ
Member

Posts: 528




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« Reply #1 on: December 04, 2002, 05:13:03 AM »

The most important thing you need to know is the
voltage and amperage requirements of your equipment.
Usually a regulated 13.8, 20 amp supply will handle
almost anything you have, but you have to decide
which brand.  Create a fused power buss and be sure
that all items attached to the supply are fused.
I like to buffer my power supply with a battery
so that if the commercial power fails I can still
operate for a while from the battery. Be sure that
you understand the "crowbar" feature of the supply
as some units go into self-destruct mode when the
AC power flickers or browns-out. Astron supplies
were the worst about that. I ,as a result, will not
buy any Astron supplies. They have cost me several
thousand dollars in equipment.
73 - Tim
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KC8VCB
Member

Posts: 102




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« Reply #2 on: December 11, 2002, 10:17:28 AM »

i don't uunderstand most hf rigs are 20-25 amp, how can a 20 amp supply power that??? And i was wanting to run both hf and vhf rigs on this supply, is it a good power supply??

73,

sam/kc8vcb
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KD7EZE
Member

Posts: 60




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« Reply #3 on: December 17, 2002, 10:12:06 AM »

Sam
 The MFJ-4035mv is a darn good power supply. I was using these even before I became a ham. It does a nice job on my business band repeaters, most of which draw 25-28 amps, in the active mode. Also, there isn't as much noise compared to the switching type of power supplies. Aside from building your own PS, I would recommend the 4035mv, and it will power every radio in your shack. Besides, you can only transmit on one radio at a time anyway, hi hi.

'73 de KD7EZE
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KG4FJA
Member

Posts: 6


WWW

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« Reply #4 on: January 04, 2003, 08:27:18 PM »

Hello Sam...I use the Astron RS-35M.  I operate an Icom Pro II and the Icom 821 off the same supply with no problems...and with room to spare...hope this information helps you in some way...

Ronnie
KG4FJA
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