st completed the protection install before
> leaving Yuma for Astoria. I am glad to hear the install was not in vain. hi hi
>
> Bill J K7BRR Yuma
>
> Message: 13
> Date: Tue, 1 Jul 2014 17:53:59 -0700
> From: "Dave Hachadorian"
> To: "Reflector Elecraf
bject: [Elecraft] K3 speaker amp chip bites the dust again -
CORRECTION!
Message-ID: <058BEFA1FA9E42939B8ED88C253D8CDA@Toshiba>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
My posting this morning about blowing the speaker amp chip w
Hi Dave,
I'm glad you found a solution and it's good to know that the mods work. You
might want to take this opportunity to reevaluate your AGC settings. I use
headphones and anything above 010 is painful. I used to set it to 012 to
help my brain work weak signals but the occasional strong signal
My posting this morning about blowing the speaker amp chip was in
error. Further investigation reveals that I actually blew out
the K3's internal speaker. Ohmmeter measurement at the speaker
terminals shows that the coil is wide open. This is really good
news, because the speaker is easily r
On 7/1/2014 4:10 PM, Joe Subich, W4TV wrote:
more power, the 3.1W amplifier is going to die when asked to produce
more than 150 W of peak power.
In a properly engineered design, the amp may clip like crazy, but it
should be able to survive such abuse indefinitely
73, Ross N4RP
73,
..
With SLP=0 and THR=20 you have essentially *no* AGC action. That
means nothing is protecting the audio amplifier from strong inputs.
I leave it to Wayne or Lyle to calculate the overall gain from noise
floor to maximum DSP output but if one has set the audio for comfort
on a S4-S6 signal the au
Some years ago I learned to take only expendable
items to Field Day: Myself :-)
Otherwise I give items to the Club: Those things
always seem to survive!
Phil W7OX
On 7/1/14, 12:28 PM, Dave Hachadorian wrote:
I guess I've blown the speaker amp IC in my K3
again. This is the third time this h
It sounds like there may be another fault in your system. Are you hooking up to
any powered external speakers or phones?
73, Fred, AE6QL
-Original Message-
>From: Dave Hachadorian
>Sent: Jul 1, 2014 12:28 PM
>To: Reflector Elecraft
>Subject: [Elecraft] K3 speaker amp ch
I guess I've blown the speaker amp IC in my K3 again. This is
the third time this has happened, twice in one radio and once in
another.
In this case, the radio had both the AF Output Mod Kit (pair of
470 ohm resistors) and the E85056 Audio Protection Assembly
Circuit Board installed.
I was
9 matches
Mail list logo
