Steve:

You know, I had thought about doing just what you say--running the rig off 
the 12-volt supply in the rv.

In fact, we have an inverter in the motor home that could do just that.

However, my concern is that we often remain camped at one spot for several 
days to maybe even a week at a time, and I worry that my use of the battery 
might take the battery down too much, especially if I'm running, say, 100 
watts on CW.

That's why I thought it'd be good to have a way to run it off commercial AC 
power at the camp site.

I have an Astron RS35 transformer-type supply in the home shack right now 
for my Icom 746, and love it.  I simply was trying to avoid having to deal 
with something that heavy or bulky, although, as you say, it'd probably 
eliminate the noise possibility that you'd have with the switching supply.

This is why I'm trying to think things through here.

73 from Tom Behler:  KB8TYJ
73 from Tom Behler:  KB8TYJ

----- Original Message ----- 
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 16, 2007 10:57 PM
Subject: Re: recommendations for switching power supply for TS480


> Tom,
>
> Quite frankly, I wouldn't use a switching supply on that radio, mostly
> because of the noise problems you mentioned.  I know there are quiet
> switching power supplies, but you'll probably pay a lot more for one than
> you would for a linear power supply of comparable current rating.  Since 
> you
> want to use the radio in a motor home, wouldn't it be more practical to 
> run
> the radio off of a 12-volt source?  Aside from that, an Astron 35-amp 
> supply
> is about 8 inches square, so it's not that big.
>
> Steve
>
> ----- Original Message ----- 
> From: "T Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, November 16, 2007 19:32
> Subject: recommendations for switching power supply for TS480
>
>
>> Hi, all.
>>
>> Well, folks, I think that, due to a number of concerns and issues, I'm
>> leaning toward purchasing the Kenwood TS480 as my HF rig of choice for 
>> the
>> motor home.
>>
>> Can anyone recommend a good quiet switching power supply for that rig?
>>
>> I have been corresponding with Kevin (K7RX), and he suggests the Samlex
>> 1223, but I can't seem to find it available anywhere, unless I'm just
>> looking in the wrong places.
>>
>> I have an MFJ 4125 22-25 amp supply that I have used before, although it
>> seems somewhat noisy on parts of the HF band spectrum, and also has a
>> rather
>> loud fan.
>>
>> If you have recommendations, could you give me approximate prices too?
>>
>> I think I might go for a slightly larger supply for the TS480, so maybe a
>> 35-amper would be the most practical.
>>
>> Thanks as always, and 73 from Tom Behler:  KB8TYJ
>>
>>
>>
>