RadioBanter

RadioBanter (https://www.radiobanter.com/)
-   CB (https://www.radiobanter.com/cb/)
-   -   cb question (https://www.radiobanter.com/cb/119391-cb-question.html)

Timothy Midkiff May 19th 07 02:28 AM

cb question
 
I got a galaxy dx 949 with a wilson 500 antenna. The swr is at 1.3-1.5.
When on ssb the warning light for swr glows brighter as you talk into
the microphone. On regular am it don't do this. What is it that could
cause this? I've got both the stock mike as well as a red devil power
microphone but they both are doing the same. Any ideas? The built in
meter on it is showing that in fact the swr dose increase as you talk on
ssb. But the swr decreases on am when you speak. Is this normal or does
it need fixed.


Dloyd Lavies[_2_] May 19th 07 03:03 AM

cb question
 
On May 18, 9:28?pm, (Timothy Midkiff) wrote:
I got a galaxy dx 949 with a wilson 500 antenna. The swr is at 1.3-1.5.
When on ssb the warning light for swr glows brighter as you talk into
the microphone. On regular am it don't do this. What is it that could
cause this? I've got both the stock mike as well as a red devil power
microphone but they both are doing the same. Any ideas? The built in
meter on it is showing that in fact the swr dose increase as you talk on
ssb. But the swr decreases on am when you speak. Is this normal or does
it need fixed.


Don't put too much confidence into any built in SWR meter or dummy
light. The best thing to do is to attach a decent watt meter such as
a bird or coaxial dynamics and take actual forward and reflective watt
readings to calculate true SWR to ensure the accuracy of the built in
meter. Nevertheless, if you are confident that the built in meter is
fairly accurate, I would say that the circuitry driving the warning
lamp is probably out of adjustment. There probably is an adjustment
in the circuit to set the threshold when the light comes on. Should be
easy to find on the schematic.

Dloyd


Timothy Midkiff May 20th 07 03:06 AM

cb question
 
Yes that is what I was told by Gi Joes. They said it was ok to just
ignore it. Every one sais it sounds fine. I appreciate what you said, I
think I may go ahead and put my stand alone swr meter on it just to see
what it will show. Just to see if the two meters agree.


John Doe May 20th 07 04:40 AM

cb question
 
It may mean that someone has turned up the internal mic control and that you
may be on the verge of FLAT TOPPING - distortation.

"Timothy Midkiff" wrote in message
...
Yes that is what I was told by Gi Joes. They said it was ok to just
ignore it. Every one sais it sounds fine. I appreciate what you said, I
think I may go ahead and put my stand alone swr meter on it just to see
what it will show. Just to see if the two meters agree.




Lord Picton from the house of trolls May 21st 07 06:55 AM

cb question
 
On May 19, 11:28 am, (Timothy Midkiff) wrote:
I got a galaxy dx 949 with a wilson 500 antenna. The swr is at 1.3-1.5.
When on ssb the warning light for swr glows brighter as you talk into
the microphone. On regular am it don't do this. What is it that could
cause this? I've got both the stock mike as well as a red devil power
microphone but they both are doing the same. Any ideas? The built in
meter on it is showing that in fact the swr dose increase as you talk on
ssb. But the swr decreases on am when you speak. Is this normal or does
it need fixed.


Hello there....try this.


DX 949 and DX 959 SWR ALERT SYMPTOM:
SWR ALERT LED stays on when SWR is below 3:1
PROBLEM:
Q1 on SWR PC board is too sensitive
SOLUTION:
Replace C5 with a 22K ohm 1/4 watt resistor

This was copied from the / Galaxy website. Cheers from Australia.



All times are GMT +1. The time now is 09:56 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com