On Jul 8, 2008, at 8:40 AM, Jan Erik Holm wrote:
Mike Penkas wrote:
I have 2 SEC1223's and no hash. I also have an Astron RS35 and
RS50 linear supplies. Sometimes the magnetic hum from them drives
me crazy. The little cork pads Astron puts in them to alleviate this
does not help much. I
Hi Thomas,
I'm not sure what your operating style is but if you are looking for 100w on
CW and SSB then I recommend the Gamma Research HPS-1a. I have one and run my
K3-100 with it all the time in a portable fashion. Here is a link to Fred's
site: http://www.gammaresearch.net/
It has a very small
Same here. I have two of these supplies, and have yet to hear a
peep of RF noise from them.
73
Stewart G3RXQ
On Mon, 7 Jul 2008 21:50:08 -0400, Bruce McLaughlin wrote:
I am having very good performance from the SEC 1223 which is the
same supply
I use with the K2/100. If it does generate any
Thomas Kuehl wrote:
small size as well. Switching supplies have come a long way relative to
the RF hash generation issue and I am considering going that route. I sure
don't want to degrade the K3'3 outstanding performance with a noisy
supply, so I am still cautious.
I don't like
Same here - nice quiet PSU. I would buy one again without any hesitation.
Simon Brown, HB9DRV
--
From: G4ILO [EMAIL PROTECTED]
I don't like switchers. I have a Diamond GSV3000 25A linear supply.
___
Based on my own personal experience, I would recommend a linear supply. I
use the Astron RS-35A. Yes, it is as big as the K3, but it is rock solid,
well-filtered, and RFI-free, and has over-voltage and over-current
protection. In addition, the Astron has heavy-duty output terminals that
will
I have 2 SEC1223's and no hash. I also have an Astron RS35 and RS50 linear
supplies. Sometimes the magnetic hum from them drives me crazy. The little
cork pads Astron puts in them to alleviate this
does not help much. I keep them under the closed console on the floor.
Mike Penkas wrote:
I have 2 SEC1223's and no hash. I also have an Astron RS35 and RS50
linear supplies. Sometimes the magnetic hum from them drives me crazy.
The little cork pads Astron puts in them to alleviate this
does not help much. I keep them under the closed console on the floor.
Thomas Kuehl wrote:
Hi,
I am back on the Elecraft list after being gone for quite a while. I have
a K3/100 coming in the next month or 2, and now I am thinking about how it
is best to power it.
Thanks, Thomas - AC7A
I bought the Alinco DM-330MW to power my K3. It's pretty small
I believe that all new SEC1223's have the mods fitted.
73
Stewart G3RXQ
On Tue, 08 Jul 2008 14:40:27 +0200, Jan Erik Holm wrote:
Mike Penkas wrote:
I have 2 SEC1223's and no hash. I also have an Astron RS35 and
RS50
linear supplies. Sometimes the magnetic hum from them drives
me crazy.
The
I have a GSV3000 as well and can confirm the lack of rfi. In my opinion switch
mode
supplies have no place anywhere near the ham shack - its bad enough the
neighbours
having them all over the place but they don't know or care - we should know
better.
As an aside if anyone has any doubts
The early Samlex switching power supplies were on the noisy side but they have
corrected that problem years ago. I personally use the Samlex SEC 1235M
switching supply with my K3 and certainly do not get any noise from it.
73 from Fern VE7GZ with K3 #412
- Original Message -
This discussion gives me the opportunity to correct an opinion that I
earlier posted on this list. Some long time ago I said I didn't much
like the Watson W25-XM switched supply because of RF noises which
always contrive to arrive on frequency at the worst possible
moment. I advised someone
Trevor Smithers wrote:
supplies have no place anywhere near the ham shack - its bad enough the neighbours
having them all over the place but they don't know or care - we should know better.
But we should also know about conversion efficiencies, power factors and
power line harmonics!
As
I also have an Astron RS35 and RS50 linear
supplies. Sometimes the magnetic hum from them drives me crazy. The little
cork pads Astron puts in them to alleviate this
does not help much. I keep them under the closed console on the floor.
Mike WA8EBM
- Original Message
Hello all,
I am using the MFJ-4125 25A switcher with my K3. I have no RF hash or
birdies from the power supply at all. I find it unbelievable that popular
and supposedly quality power supplies like the Astron would leave exposed
transistor cases at elevated voltage above ground. The MFJ fan,
Here's a plug for the MFJ-4225MV which I'll be using with my K3 any day
now ...
It should go well because it's small and light (I guess most switchers
can make that claim though). I have not noticed any RF noise when using
it with my IC-706 or alongside my now departed FT-1000.
It has a
I find the fan noise on my MFJ-4125 unacceptable.
If I ever use it again it will have to be put behind the desk.
73,
Tony W7GO
ab2tc wrote:
Hello all,
I am using the MFJ-4125 25A switcher with my K3. I have no RF hash or
birdies from the power supply at all. I find it unbelievable that
On Tue, 2008-07-08 at 17:02, ab2tc wrote:
Hello all,
I am using the MFJ-4125 25A switcher with my K3. I have no RF hash or
birdies from the power supply at all. I find it unbelievable that popular
and supposedly quality power supplies like the Astron would leave exposed
transistor cases at
I am having very good performance from the SEC 1223 which is the same supply
I use with the K2/100. If it does generate any noise I have yet to hear it.
Bruce-W8FU
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Thomas Kuehl
Sent: Monday, July 07, 2008
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