I will contact Elecraft tomorrow, but posting in case someone
recognizes the symptoms.
I just put together a new KPA500 kit. When I select Operate, the RX
through the amplifier is significantly attenuated, many 10s of dBs.
The amp will also amplify even with nothing connected to the PA Key
RCA
The only thing that comes to mind, Mark,
absent a failed component someplace, is
perhaps one of the ribbon cables is
incorrectly installed. Good luck!
73, Ken K3IU
~
On 11/15/2015 3:24 PM, Mark Goldberg wrote:
I will contact Elecraft tomorrow, but
15 Nov 2015 13:24:46 -0700
>From: Mark Goldberg <marklgoldb...@gmail.com>
>To: Elecraft Mailing List <elecraft@mailman.qth.net>
>Subject: [Elecraft] KPA500 RX Attenuation and TX Without Amp Key
>Message-ID:
> <CAKn+a3uBpE2dTAwSF+oi+EHj5XAyZ_d3fy=lq8f4hyabuyc...
Mark;
Recheck the ribbon cable connections in the amplifier. This sounds like a
connector
is off, either to a side or more likely one complete row of pins is off. My
suspicion
is the 14-pin cable going to the front panel, but it could be the larger cable
going
to the IO board. You also might
I am using the relay contact in the TS-590S, not SG, but the amp us in TX
mode with nothing connected to the PA Key jack, which should not happen.
With nothing but RF in and out connected to the rear panel it goes into TX
mode when I select Operate.
73,
Mark
W7MLG
On Nov 15, 2015 10:29 PM,
Hi Mark
I can relate to what you are experiencing with the KPA500.
You do not mention which rig you are using to drive the KPA500 or how you
have the transmit switching configured.
I bought a new TS590SG some months ago and set it up using the solid state
switching which on the face of it is
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AG0N-3055
Sent: Saturday, February 09, 2013 8:24 PM
To: John K3TN
Cc: elecraft
Subject: Re: [Elecraft] KPA500 - Rx Attenuation
On Sat, 9 Feb 2013 19:51:09 -0800 (PST), John K3TN wrote:
I thought 40M signals sounded kinda low, and the noise
: elecraft
Subject: Re: [Elecraft] KPA500 - Rx Attenuation
On Sat, 9 Feb 2013 19:51:09 -0800 (PST), John K3TN wrote:
I thought 40M signals sounded kinda low, and the noise floor on the P3
was down - but then noticed when I turned the KP!500 from OPER to
STBY, signals came about 15db. No fault
: [Elecraft] KPA500 - Rx Attenuation
Make sure that the amp's PTT line is not pulled low when you expect to be
receiving.
73 de Dick, K6KR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AG0N-3055
Sent: Saturday, February 09
.
-Original Message-
From: Dick Dievendorff die...@comcast.net
To: mcduffie mcduf...@garymcduffie.com; 'John K3TN' jpescat...@aol.com
Cc: 'elecraft' elecraft@mailman.qth.net
Sent: Sun, Feb 10, 2013 5:58 am
Subject: RE: [Elecraft] KPA500 - Rx Attenuation
Make sure that the amp's PTT line
On Sat, 09 Feb 2013 21:23:40 -0700, AG0N-3055 wrote:
On Sat, 9 Feb 2013 19:51:09 -0800 (PST), John K3TN wrote:
I thought 40M signals sounded kinda low, and the noise floor on the P3 was
down - but then noticed when I turned the KP!500 from OPER to STBY, signals
came about 15db. No fault
Hi Gary,
This is normal as the KPA500 is designed to attenuate signals the further you
go below the 160M band in order to protect the T/R switching diodes from BC
band overload.
73,
Eric WA6HHQ
elecraft.com
_..._
On Feb 10, 2013, at 5:28 PM, AG0N-3055 mcduf...@ag0n.net wrote:
The
Isn't this basically what the Roofing Filter option in the KX3 does.
Waiting on mine to arrive this Thursday...Rick
On Sun, Feb 10, 2013 at 6:08 PM, Eric Swartz WA6HHQ - Elecraft
e...@elecraft.com wrote:
Hi Gary,
This is normal as the KPA500 is designed to attenuate signals the further
you
...@mailman.qth.net] On Behalf Of Eric Swartz WA6HHQ -
Elecraft
Sent: Sunday, February 10, 2013 3:08 PM
To: mcduf...@garymcduffie.com
Cc: elecraft
Subject: Re: [Elecraft] KPA500 - Rx Attenuation
Hi Gary,
This is normal as the KPA500 is designed to attenuate signals the further
you go below the 160M band
On Sun, 10 Feb 2013 18:08:15 -0500, Eric Swartz WA6HHQ - Elecraft wrote:
This is normal as the KPA500 is designed to attenuate signals the further
you go below the 160M band in order to protect the T/R switching diodes
from BC band overload.
Thanks, Eric. Interesting. Is there a way to
Rick,
The roofing filter option for the KX3 serves an entirely different
function. It reduces the possibility of a strong adjacent channel
signal overloading the KX3 at the product detector stage.
The filters in the KPA500 (and the K3) that attenuate signals below 1600
kHz are in the front
Oooop's. I saw somewhere about AM band reception. It is the ATU
filters.Here is what I was thinking of
The KXAT3 antenna wide range tuner plugs into existing connectors inside
the KX3. The KXAT3 stores the
settings found for the best match at multiple points across each band,
allowing for
I thought 40M signals sounded kinda low, and the noise floor on the P3 was
down - but then noticed when I turned the KP!500 from OPER to STBY, signals
came about 15db. No fault indicated. TX power seems fine. Any thoughts?
John K3TN
--
View this message in context:
On Sat, 9 Feb 2013 19:51:09 -0800 (PST), John K3TN wrote:
I thought 40M signals sounded kinda low, and the noise floor on the P3 was
down - but then noticed when I turned the KP!500 from OPER to STBY, signals
came about 15db. No fault indicated. TX power seems fine. Any thoughts?
I'm
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