[Elecraft] Looking for miniature 14-V power supply for travel

[Jim Sheldon]

Well, it didn't completely disappear, but is attenuated to the point that atmospheric noise is far more of a problem than the p/s noise.  On a very quiet band, you'd still hear the p/s but any signals would be strong enough that even a S2 signal would be readable over it.  If the KX3's noise blanker/noise reduction is even close to a K3, you'd be able to live with it.  Not my choice for a primary QRP power supply, but certainly I'm keeping mine around as backups.
 
My primary station supply for the 100 watt K3 is an MFJ 4245MV 40 amp Switcher and there is absolutely no noise out of that one that I can find.  Far too big to work as a vacation supply.
 
Jim - W0EB

> Someone else mentioned the same issue. I asked if he had tried RF
> chokes, and he hadn't; he just put them on, and the noise
> disappeared.
>
> Wayne
>
> On Jul 4, 2011, at 5:34 PM, Phil & Debbie Salas wrote:
>
>> Wayne - I originally bought a CUP36 a number of years ago to use
>> with my
>> FT-817.  You DO have to purchase an AC cord (it doesn't come with
>> one) - and
>> it is a 2-pin power cord.  I found that the CUP36 was very RF
>> noisy -
>> particularly from 160-40 meters.  I wound up buying a MFJ-4103
>> which
>> I found
>> to be RF quiet.
>>
>> Phil - AD5X
>>
>> "Thanks, Randy. This is even smaller than the MFJ-4103.
>>
>> The web site indicates a noise problem without proper grounding.
>> Have
>> you found this to be an issue? They mention supplying a "2-pin"
>> standard power connector, which is *not* what you want if you're
>> trying to get a good common ground back to the AC jack. Is that a
>> typo
>> -- i.e., do they actually supply a 3-pin AC plug?
>>
>> Thanks,
>> Wayne
>> N6KR"
>>
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