I am about to replace my 35 year old Astron 35 amp supply. The choices
are switchers or analog and 20 or 35 amp. The supply will ONLY be used
for the K3. Everything else in the shack is on a different supply.
Questions:
Are the 20 amp supplies enough power for the K3?
Are switchers any good or
Hi Bill,
Deja Vu all over again.
http://www.mail-archive.com/elecraft@mailman.qth.net/msg137871.html
The majority opinion in June was to go for another 35 amp Astron. That's
what I use.
73,
Mike K2MK
Bill wrote
I am about to replace my 35 year old Astron 35 amp supply. The choices
are
...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill
Sent: Thursday, October 11, 2012 6:10 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 - what power supply are you using?
I am about to replace my 35 year old Astron 35 amp supply. The choices are
switchers or analog and 20
Yes.
You should also consider a 35 to 55 AH (or thereabouts) Gel-Cell battery
and a 3 to 4 amp automatic charger. Advantages: (1) Instant emergency
power good for several hours, (2) protection against line spikes
(surges) and dips (brown-outs), (3) the small charger will make up the
I have a very large deep discharge battery and the West Mountain
distribution and charging stuff. This is why I am actually considering a
20 amp supply. The battery picks up the slack - and when the power goes
out (which it does all too often here) you keep right on talking. I
question the
I Bill,
I'using a single 28A Difona (
http://www.difona.de/f_k_s.php?language=enID=8ageraet=netzteil)
switching power supply for all my rigs and they all work very well. I have
no doubt for a switching amp.
73
Giampiero / IW2ESL
On Thu, Oct 11, 2012 at 1:09 PM, Bill b...@w2blc.net wrote:
I am
/N0AZZ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Wiley
Sent: Thursday, October 11, 2012 6:43 AM
To: Bill
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 - what power supply are you using?
Yes.
You should also
Bill,
If the Astron is toast, it's a pretty simple circuit to repair (if parts
can be found). I'd either fix it or replace it with one from the same
litter.
73, Mike
On 10/11/12 7:09 AM, Bill wrote:
I am about to replace my 35 year old Astron 35 amp supply. The choices
are switchers or
Hi Bill,
Last year I replaced a decade old Astron SS-20 (field day 2011 death)
with a new SS-25. I prefer a quiet room and use the rig speaker. The new
SS-25 fan is too noisy, even hidden under the desk, for me. Much louder
then the K3/100 fan.
My plan is to try a Samlex 1223 or 1235 next.
This has been covered several times ...
Are the 20 amp supplies enough power for the K3?
They are marginal - I have seen 22A or slightly more with some
loads on some bands. Given that the current metering is somewhat
an average, the instantaneous peaks will be higher. 25A is a
realistic
Using 3 SS-25M. One for each K3 and one for accessories.
The oldest doesn't have meter lights. The 2 newer ones do.
They run the rigs just fine. I do not have any fan noise.
Larry/K2GN - http://k2gn.com
__
Elecraft mailing list
Home:
Well in the shack I use a HB linear supply using biggest parts I could
scrounge. Just to see what it could do I went keydown on 3 100 watt rigs
and it sagged 1/2 volt. If I am portable I use either a Powerwerx 30 amp
switcher or an MFJ 25 amp switcher. Rigs can't tell the difference. In the
shack
I have been using a commercial switching power supply
for many years. It is a Power Source bolted to the back
of my desk. 45 amp is what it says. Been on 24/7 365
for over 12 years. In this location. It was used for years
before this set up. Thought I had a problem with it some
months back but
On 10/11/2012 5:01 AM, Bill wrote:
I have a very large deep discharge battery and the West Mountain
distribution and charging stuff.
Since 2004, I've been using the biggest deep discharge that Costco
sells, float-charged by a 10A switcher that I paid $10 for at a hamfest.
It was VERY noisy
HB Smart Charger consisting of: 35A Astron used for the raw DC pass
transitors, AA Engineering smart charger card suitably modified, 95AH AGM
battery, TGE boost regulator.
--- On Thu, 10/11/12, Bill b...@w2blc.net wrote:
From: Bill b...@w2blc.net
Subject: [Elecraft] K3 - what power supply
:37 -0400
From: Bill b...@w2blc.net
Subject: [Elecraft] K3 - what power supply are you using?
To: elecraft@mailman.qth.net
Message-ID: 5076a8f1.2030...@w2blc.net
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I am about to replace my 35 year old Astron 35 amp supply.
The choices
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