Come to think about it, I haven't heard mine click and pop in quite some
time. I doubt that it's seasonal, but that is an interesting twist. I
doubt that my room or the dormant equipment varies over +/- 2°F over any
given 24 hr period.
73
Bob, K4TAX
On 4/7/2019 1:11 PM, Andy Durbin wrote:
This will only be of interest to a few KPA500 owners - those who don't think
loud clicks/ticks/pops are acceptable.
In the message below I reported that I had lost interest in my investigation
because the click/ticks had stopped. That message is dated October 2018.
Late March the ticks
terrestrial HF users.
>>
>> Not picking on you personally, but you made the statement so figure maybe
>> would reply. Just curious.
>>
>> 73, Ed - KL7UW
>> * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3
>> directly connected.
>>
Guess I got a few replies to my comments. I will try to respond to
all in this one:
James-w6jhb: Bob did reply back and was referring to using digital
on 160m, which is harder to work than upper bands like 20m. More
power helps. I have done some operating on 600m (before it became a
ham
That digital modes are all "low power modes" is an unfortunate urban
legend, Ed. PSK31 is very narrow and will work well in very narrow RX
bandwidths. Noise power, being proportional to bandwidth, will thus be
less on each end, and lower powers work well. It's also angle
modulation and
Cc: "elecraft@mailman.qth.net"
Subject: Re: [Elecraft] KPA500 Clicks & Pops
Message-ID:
Content-Type: text/plain; charset=us-ascii
I do run 400 watts or so on digital modes. Issues are not really noted on SSB
or CW modes.
I've set the Fan Ctr to 2 and 3 and still noted the issue
Was
X
> To: "Dauer, Edward"
> Cc: "elecraft@mailman.qth.net"
> Subject: Re: [Elecraft] KPA500 Clicks & Pops
> Message-ID:
> Content-Type: text/plain; charset=us-ascii
>
> I do run 400 watts or so on digital modes. Issues are not really noted on
&
uld reply. Just curious.
73, Ed - KL7UW
* that I/F later was used for JT-65 on eme 15 years ago. Now use my
K3 directly connected.
Date: Tue, 16 Oct 2018 16:59:15 -0500
From: Bob McGraw K4TAX
To: "Dauer, Edward"
Cc: "elecraft@mailman.qth.net"
Subject: Re: [Elecraf
"If you can figure out how to keep the relatively thin "Z" panel from expanding
and contracting as it is heated and cooled, you will have a solution to the
problem."
If the Z bracket really is the source of the noise, and I'm not yet convinced
it is, then there is no need to stop it expanding
6 Oct 2018 14:13:55 -0700
From: Dennis Moore
To: Elecraft Reflector
Subject: Re: [Elecraft] KPA500 Clicks & Pops
Message-ID: <0497f5c1-6e76-75be-53c4-4acf668d9...@mail4life.net>
Content-Type: text/plain; charset=utf-8; format=flowed
I rarely hear anything from
25
>Date: Tue, 16 Oct 2018 14:13:55 -0700
>From: Dennis Moore
>To: Elecraft Reflector
>Subject: Re: [Elecraft] KPA500 Clicks & Pops
>Message-ID: <0497f5c1-6e76-75be-53c4-4acf668d9...@mail4life.net>
>Content-Type: text/plain; charset=utf-8; for
On 10/16/2018 1:56 PM, Bob McGraw K4TAX wrote:
I've tried to determine where the clicks originate without success.
This is a much discussed issue. Check the archive. Call or email
Elecraft if you want to know more.
73, Jim K9YC
__
Reflector
Subject: Re: [Elecraft] KPA500 Clicks & Pops
Message-ID: <0497f5c1-6e76-75be-53c4-4acf668d9...@mail4life.net>
Content-Type: text/plain; charset=utf-8; format=flowed
I rarely hear anything from my KPA500-F. Serious question, I wonder if
those with the kit exper
..AB4IQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dennis Moore
Sent: Tuesday, October 16, 2018 4:14 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] KPA500 Clicks & Pops
I rarely hear anything from my KPA5
Mine was a kit (sn 267) and I've never heard any noises from it whatever.
Kent K9ZTV
On 10/16/2018 4:13 PM, Dennis Moore wrote:
I wonder if those with the kit experience more noise than those with
factory assembled units?
---
This email has been checked for viruses by AVG.
...@mailman.qth.net On
Behalf Of Dennis Moore
Sent: Tuesday, October 16, 2018 4:14 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] KPA500 Clicks & Pops
I rarely hear anything from my KPA500-F. Serious question, I wonder if those
with the kit experience more noise than those with factory assembled u
Mine is a KPA500-F s/n 3519 thus it is factory assembled.
73
Bob, K4TAX
On 10/16/2018 4:13 PM, Dennis Moore wrote:
I rarely hear anything from my KPA500-F. Serious question, I wonder if
those with the kit experience more noise than those with factory
assembled units?
Dennis NJ6G
On
I rarely hear anything from my KPA500-F. Serious question, I wonder if
those with the kit experience more noise than those with factory
assembled units?
Dennis NJ6G
On 10/14/2018 19:52, Bob McGraw K4TAX wrote:
What is the recommended solution to stopping the clicks and pops from
the KPA500
I've tried to determine where the clicks originate without success.
I've loosened screws on the top and right side and tightened screws on
the top and right side. No difference. Perhaps someone at Elecraft will
add a comment in this regard.
I did observe that the 5 screws at the center of
I found this quite annoying too. My approach was to try to understand how the
Z bracket temperature varied relative to the heat sink temperature. I placed a
thermistor on the front end of the Z bracket and another on the heat sink fin
closest to the Z bracket. I logged the standard PA
Ear plugs.
Sent from my iPhone
...nr4c. bill
> On Oct 14, 2018, at 10:52 PM, Bob McGraw K4TAX wrote:
>
> What is the recommended solution to stopping the clicks and pops from the
> KPA500 as the amp heats during transmission and cools during receive? I've
> seen one that suggested
What is the recommended solution to stopping the clicks and pops from
the KPA500 as the amp heats during transmission and cools during
receive? I've seen one that suggested replacing the screws in the Z
bracket with 4-40 x 1/4". Any traction to this?
The amp performs absolutely fantastic.
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