On Nov 30, 2004, at 1:24 AM, Stewart Baker wrote:
t is a shame that there is no way to get
at the +8V rail on the front panel board as that would be an ideal mic
supply.
I brought the +8V rail from the RF board up to a two-pin jumper. I then
plug this in to once side of the Mic jumper
On Tue, 30 Nov 2004 15:45:37 EST, [EMAIL PROTECTED] wrote:
In a message dated 30/11/04 16:46:51 GMT Standard Time,
[EMAIL PROTECTED] writes:
That's what I was doing, however, because anything capacitive slows the rise
of
the 5A rail, and hence the correct MCU initialisation, I was chasing my
Hi Stewart
Try Rather than directly connecting the decoupling cap to the 5v
supply, try
feeding it via a 100 ohm (or so) resistor. at 1ma you will only drop .1 v
but you have created a low pass filter for the noise.
Rgds
Andy Pevy
G4XYW
A future K2 owner (when the company bonus
On Tue, 30 Nov 2004 08:47:38 GMT, Stewart Baker wrote:
On Tue, 30 Nov 2004 07:59:31 +, Andy Pevy wrote:
Hi Stewart
Try Rather than directly connecting the decoupling cap to the 5v supply, try
feeding it via a 100 ohm (or so) resistor. at 1ma you will only drop .1 v
but you have created a
At 01:24 AM 11/30/2004, Stewart Baker wrote...
problem, but I am back with the noise. It is a shame that there is no way to
get
at the +8V rail on the front panel board as that would be an ideal mic supply.
The Auxbus connection between the RF board and front panel is unused. You could
cut the
On Tue, 30 Nov 2004 07:18:23 -0500, Mike S wrote:
At 01:24 AM 11/30/2004, Stewart Baker wrote...
problem, but I am back with the noise. It is a shame that there is no way
to get
at the +8V rail on the front panel board as that would be an ideal mic
supply.
The Auxbus connection between the
Stewart Baker wrote:
The amplifier only draws about 1mA, however because of noise on the 5A line,
mainly from the LED bar graph I have had to heavily decouple the pre-amp supply
to stop the noise from being superimposed on my speech.
What I think is happening is that this decoupling is
On Tue, 30 Nov 2004 08:01:25 -0800, Vic Rosenthal wrote:
Stewart Baker wrote:
The amplifier only draws about 1mA, however because of noise on the 5A line,
mainly from the LED bar graph I have had to heavily decouple the pre-amp
supply
to stop the noise from being superimposed on my speech.
In a message dated 30/11/04 16:46:51 GMT Standard Time,
[EMAIL PROTECTED] writes:
That's what I was doing, however, because anything capacitive slows the rise
of
the 5A rail, and hence the correct MCU initialisation, I was chasing my tail.
This is a problem I have come across before
Stewart,
You may want to monitor the state of '8R', '8T', and 'MUTE' signals in the
K2 during such occurrances. That may give you a bit of information about
where to begin looking for the source of the problem.
73,
Don W3FPR
- Original Message -
From: Stewart Baker [EMAIL
On Sun, 2004-28-11 at 10:43 +, Stewart Baker wrote:
If I press the MODE button to select the VOX function the display shows SPCH
0.2
then returns to the frequency display with the mode (U or L) flashing.
With no microphone connected and the POWER control fully ACW their is no
received
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