the astron and samlex switching power supplies aren't a problem, I have 
each, one in my go kit, and one I run my station off and I haven't seen a 
problem with either. I knew one guy who had an MFJ one, with a 2 prong plug 
on it, I don't know the model but it had a cigarette lighter socket on the 
front as well as the usual hookups, that thing was so dirty they actually 
put a filter on it so you could tune the filter as you tuned through the 
frequencies. I told him at one special event we did if I ever saw that thing 
again, I was packing up my equipment and going home, it made HF pretty well 
useless.
----- Original Message ----- 
From: "Steve" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, February 12, 2011 8:24 PM
Subject: Re: Finally Found Ground Connection on RS35 Power Supply


> Yeah, if you want one that doesn't do that, probably look at a switching
> power supply.  Beware, though, some of the switchers can be pretty dirty 
> in
> terms of birdies.
>
> Steve
> ----- Original Message ----- 
> From: "tom behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, February 12, 2011 7:08 PM
> Subject: Re: Finally Found Ground Connection on RS35 Power Supply
>
>
>>    Don:
>>
>> You shouldn't have to take the top cover off;  just slide the little 
>> piece
>> of cardboard or Braille paper in between the top cover and front panel,
>> and
>> you should be fine.  Leave enough of the cardboard exposed so you can 
>> pull
>> it out if you ever have to.
>>
>> Regarding other power supplies that don't have this problem, I'll defer 
>> to
>> others on the list.
>>
>> To me, this is a very minor problem with the Astrons that is not enough 
>> to
>> make me want to switch supplies, but I know that boils down to personal
>> preferences and tolerance levels.
>>
>> 73 from Tom Behler:  KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Don Risavy, Jr. NR4DR" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Saturday, February 12, 2011 6:40 PM
>> Subject: Re: Finally Found Ground Connection on RS35 Power Supply
>>
>>
>> Ok so removed the top cover and stick a piece of cardboard or may be some
>> think Braille paper and close it or does it need to go down the sides as
>> the
>> sound goes down slightly when something is stuck on top of it; but, still
>> can hear the low sound that gets on your nerves after a while and makes 
>> me
>> want to turn the power supply off and the radio too after a while of
>> listening to that.
>>
>> Wondered if there are other power supplies out there that don't do this
>> that
>> are the same size?
>>
>> Tnx cul 73
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators 
>> [mailto:[log in to unmask]]
>> On Behalf Of tom behler
>> Sent: Saturday, February 12, 2011 4:19 PM
>> To: [log in to unmask]
>> Subject: Re: Finally Found Ground Connection on RS35 Power Supply
>>
>> Don:
>>
>> My Astron used to vibrate when turned on, so I stuck a thin piece of
>> cardboard between the side panel and the top cover, and the vibration
>> stopped.
>>
>> Apparently, this is a problem with Astron supplies.
>>
>> 73 from Tom Behler:  KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Don Risavy, Jr. NR4DR" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Saturday, February 12, 2011 2:42 PM
>> Subject: Re: Finally Found Ground Connection on RS35 Power Supply
>>
>>
>> How can you make these power supplies or this one as have it too quieter
>> when turned on as doesn't affect the operations of the power supply just
>> annoying when have it on and sitting there listening to or monitoring the
>> radio.
>>
>> Tnx cul 73 nr4dr
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators 
>> [mailto:[log in to unmask]]
>> On Behalf Of tom behler
>> Sent: Saturday, February 12, 2011 1:13 PM
>> To: [log in to unmask]
>> Subject: Finally Found Ground Connection on RS35 Power Supply
>>
>>    Hi, all.
>>
>> Well, I made and have now connected the grounding cable for my RS35 
>> Astron
>> power supply, as a way of further minimizing the chances of Rf creating
>> problems for my set-up.
>>
>> And, I want to thank John (N1UMJ)  for his description that actually
>> helped
>> me find the ground connection on the RS35.
>>
>> I'll paste his description below, for anyone else who might be searching
>> for
>>
>> it someday.
>>
>> As John says, it's very hard to find, unless you know exactly what you 
>> are
>> looking for.
>>
>> Thanks, John.
>>
>> 73 from Tom Behler:  KB8TYJ
>>
>> Here's John's description:
>>
>> On mine, it was underneath, pretty close to the power cord, under the
>> power
>> supply, it looked like a double nut with a star washer between the 2 
>> nuts,
>> it was very close to the little rubber or plastic foot that keeps it from
>> sitting right on the desk. I never used it but I remember it was there,
>> very
>> close to that foot. You had to really be looking for it or you'd think it
>> was
>> just another bolt.