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What size power supply?????

Posted: Thu Jun 13, 2002 4:29 am
by K8SWR
I'm getting a flexar repeater UHF 40 Watt and It needs a power supply can someone tell me what size I need as far as amps etc. ???? :D

Posted: Thu Jun 13, 2002 6:24 am
by jim
I would use at least a 25 amp. This is slightly large for a 40 watt unit, but it is a repeater and will be powered all the time. For something like this, bigger is better. The larger one will generate less heat and last longer. A "switching" type is more efficient and smaller, but usually won't last as long as a good 'ol transformer/rectifier type.

Re: What size power supply?????

Posted: Thu Jun 13, 2002 7:31 am
by Jonathan KC8RYW
AB8JD wrote:I'm getting a flexar repeater UHF 40 Watt and It needs a power supply can someone tell me what size I need as far as amps etc. ???? :D
An Astron RS-35A should do the trick, and have some power left over. It is the linear type, that Jim was talking about above. Many ham repeaters are powered on these, and are almost the de facto standard.

Posted: Thu Jun 13, 2002 10:31 am
by Monty
Hi:

Eee gads:

Not to say bigger is better, but most [ Fleaxar ] Repeaters
are sometimes [ 2 watts ] some are [ 15 ], and the max
is [ 25 watts ]

So, all in all, you should either get a Power supply that
will fit into the slot ( if its missing ) and I have a few if
needed, or note the [ Model ] number of the Flexar
Repeater and let us know.....04, D24, D34 ect...

Generally a 25 Watt Flexar only needs a 8-10 Amp power
supply.....( The factory original has 2 power transistors
mounted on the heatsink

MS