Steve,

Not sure what the deal is with Jim's node, but I hear a lot of audio 
break-up, especially when several stations check in.  I disconnected from 
his node and connected to John's, but didn't hear anyone so I disconnected 
and reconnected to Jim.  By that time, though, everyone was gone.  Just not 
my night, I guess.

Steve

----- Original Message ----- 
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: December 12, 2015 17:51
Subject: Re: Re-thinking New RS35 Power Supply Issue Again


> Steve,
>
> I still think I would put a brick on it.  If it still hums, get a bigger
> brick.  Rinse and repeat.
>
> Sorry couldn't hear you very well on the echo link thing last night.
> Your audio was loud enough, just constant drop outs.
>
> 73, Steve KW3A
>
> On 12/12/2015 5:42 PM, Steve Dresser wrote:
>> Steve,
>>
>> This morning, I heard someone mention something he called "foam board,"
>> which he said was available at Home Depot and was an effective cure for
>> mechanical hum of the type Tom describes.  Apparently, the stuff comes in
>> 4-foot sheets and is about an inch thick.  Of course, another solution 
>> for
>> the hum is to hire a rock band and have them play at full volume whenever
>> the supply is turned on, at which point the hum will be a very minor
>> concern.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Steve Forst" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: December 12, 2015 16:38
>> Subject: Re: Re-thinking New RS35 Power Supply Issue Again
>>
>>
>>> Tom,
>>>
>>> Best cure for odd noises in the shack is a good pair of headphones.
>>>
>>> It won't kill you to check  and see if things are tight inside,  unless
>>> you leave it plugged in while  waving a screwdriver around in there,
>>> then it just might kill you.
>>>
>>>
>>> Just getting the cover off and back on may  change things, maybe even
>>> for the better.
>>>
>>> I would also follow the earlier suggestion of putting something under
>>> the feet.   It doesn't have to be a big thing, just little  circles of
>>> whatever under each foot.    Little half dollar size pieces of carpet
>>> padding or whatever you can swipe  when your wife isn't looking.
>>>
>>>
>>> Hum seems to be the nature of the beast with the Astron's, and some seem
>>> to be worse than others.
>>>
>>> 73, Steve KW3A
>>>
>>>
>>>
>>>
>>>
>>> On 12/12/2015 4:23 PM, Tom Behler wrote:
>>>> Steve:
>>>>
>>>> I guess I'm a bit puzzled as to why I didn't hear it with my older 
>>>> RS35,
>>>> and
>>>> other supplies I've used.
>>>>
>>>> All that aside, I think that tonight, I might take the cover off, and 
>>>> try
>>>> to
>>>> re-tighten all the screws to be sure everything is firmly in place.
>>>>
>>>> Then, I'll see if I can make some sort of a wedge out of folded Braille
>>>> paper or something like that to insulate the top and sides of the cover
>>>> from
>>>> the main unit to cut down a bit on the vibration hum.
>>>>
>>>> Thanks for your patience with this, everyone.
>>>>
>>>> Tom Behler: KB8TYJ
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: For blind ham radio operators
>>>> [mailto:[log in to unmask]]
>>>> On Behalf Of Steve Dresser
>>>> Sent: Saturday, December 12, 2015 3:50 PM
>>>> To: [log in to unmask]
>>>> Subject: Re: Re-thinking New RS35 Power Supply Issue Again
>>>>
>>>> Tom,
>>>>
>>>> The increase in hum is normal.  It happens when you draw more current
>>>> from
>>>> the supply, and it happens with all power supplies.  As long as the
>>>> supply
>>>> is delivering the right voltage under load, you have no real basis for
>>>> returning it.
>>>>
>>>> Steve
>>>>
>>>> ----- Original Message -----
>>>> From: "Tom Behler" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: December 12, 2015 15:01
>>>> Subject: Re-thinking New RS35 Power Supply Issue Again
>>>>
>>>>
>>>>> Hello, again, everyone.
>>>>>
>>>>>
>>>>>
>>>>> I am now beginning to wonder if today is my day for Murphy to make a
>>>>> visit
>>>>> here, or just what exactly the deal is.
>>>>>
>>>>>
>>>>>
>>>>> I was working a bit of the 10-meter contest today, and noticed a 
>>>>> further
>>>>> problem with the hum issue on my new Astron RS35 power supply.
>>>>>
>>>>>
>>>>>
>>>>> I'm not sure why I didn't notice it last night when I did my testing,
>>>>> but
>>>>> now, I find that whenever I transmit in CW at any power level-i.e. 5
>>>>> watts
>>>>> or 100 watts, the hum on the RS35 slightly increases.  In other words,
>>>>> when
>>>>> I key down, I hear a slight, but noticeable increase in the hum at any
>>>>> power
>>>>> level.
>>>>>
>>>>>
>>>>>
>>>>> So, now, I'm trying to decide whether I actually should return the
>>>>> supply
>>>>> to
>>>>> H R O.
>>>>>
>>>>>
>>>>>
>>>>> I have my receipt and all other documentation, but I'm wondering 
>>>>> whether
>>>>> the
>>>>> folks at HRO would see this as a significant enough of a problem for a
>>>>> product return.
>>>>>
>>>>>
>>>>>
>>>>> The supply still seems to carry the load ok, and does put out what I
>>>>> would
>>>>> expect in terms of output power readings, but the hum issue is a
>>>>> noticeable
>>>>> one now, on several counts.
>>>>>
>>>>>
>>>>>
>>>>> I don't mean to be obsessive about this, but I wouldn't expect to be
>>>>> dealing
>>>>> with this sort of issue with a newly-purchased power supply like this.
>>>>>
>>>>>
>>>>>
>>>>> I'd continue to be interested in anyone's thoughts.
>>>>>
>>>>>
>>>>>
>>>>> Tom Behler: KB8TYJ
>>>>>
>>>>>
>>>>
>>