Ok. More weirdness. If the 2 receivers are on the same antenna ports the sub is
always way down. If the receivers are on opposite ports they work fine! I set
up the sig gen this morning and I can set A to 1 and B to ant2 and swap the
inputs with my sig gen and they are fine. If I put B on ant 1 and A on ant2
a-ok also. If I put them both on the same ant port the sub rx is always down.
They seem to be in parallel on the print. I must be missing something. I'm
going out with my wife to eat Chinese. Maybe that will help. The saga continues
this afternoon.
Randy
K8RDD
----- Original Message -----
From: Greg
To: Randy Downs
Sent: Friday, December 26, 2008 11:05 PM
Subject: RE: [Elecraft] KRX3 Problem
Possible but I would not think that would go out like that when it was
working when you shut down....then not when you powered up the next day. As
for what levels to be looking for, Gary needs to get involved with that.
Enjoy the Chinese food tomorrow!
Greg
-----Original Message-----
From: Randy Downs [mailto:[email protected]]
Sent: Friday, December 26, 2008 7:53 PM
To: Greg
Subject: Re: [Elecraft] KRX3 Problem
Thanks I'll try in the morning. I checked them but did not unplug and plug
back in. I need to get it back on my bench where I can hook up the sig gen and
start checking it out. Is there a level chart available for the synth outputs
etc that I can check with a scope? I have a 400mhz. I forgot I have to take my
wife out for Chinese tomorrow so it will be tomorrow afternoon. Anyway I'll do
a more thorough check tomorrow. I have the feeling it's somewhere between the
preamp and the tmp con. Maybe the protection relay?
Randy
K8RDD
On Fri, Dec 26, 2008 at 10:50 PM, Greg <[email protected]> wrote:
I was thinking it may be a problem with the TMP connector on the KRX3
near the back corner near the KIO3 stack. But if you are not getting anything
when sharing the main connection I doubt that's it.
Please double check the TMP connections from the KRX3 and the sub SYN
boards. Make sure they are good and snug. Then try and redo the VCO CAL for
the sub again.
Greg
-----Original Message-----
From: Randy Downs [mailto:[email protected]]
Sent: Friday, December 26, 2008 7:26 PM
To: Greg
Subject: Re: [Elecraft] KRX3 Problem
On 160 meters with a 20 over signal on vfo A, I can see no difference
when I unplug the tmp going to the krx3 it stays at about s2, preamp on but 20
over on vfo A. If I touch the antenna to the tip of the tmp going to the krx3 I
still see no increase in signal strength. Preamp on krx3 does brings up
noise floor. It appears to be working. The signal appears to go directly into
the krx3 via J92. I guess I'll have to pull the krx3 tomorrow. Maybe a
connection on the board or a problem somewhere before the preamp. Bummer.
Randy
K8RDD
On Fri, Dec 26, 2008 at 9:43 PM, Greg <[email protected]> wrote:
Do you get signals when you set it to main so that it shares the RF
path with the main rx?
-----Original Message-----
From: Randy Downs [mailto:[email protected]]
Sent: Friday, December 26, 2008 6:31 PM
To: Greg
Subject: Re: [Elecraft] KRX3 Problem
Yeah it's set to atu and no decimals blinking.
On Fri, Dec 26, 2008 at 9:21 PM, Greg <[email protected]> wrote:
Did you double check that KRX3 is set to the correct
setting...either BNC or ATU as appropriate?
Are any of the frequency display decimals blinking?
Greg
-----Original Message-----
From: Randy Downs [mailto:[email protected]]
Sent: Friday, December 26, 2008 6:10 PM
To: Greg
Subject: Re: [Elecraft] KRX3 Problem
I tried that. I actually bypassed it by connecting the tmp
directly to the antenna. I think it's really broke. I'll download the schematic
and take a look. And it was working so good last night when 10 was open.
Searching with the main and talking with the sub. Dang-it.
Randy
K8RDD
On Fri, Dec 26, 2008 at 9:12 PM, Greg <[email protected]>
wrote:
Try HOLDing the RX ANT button to switch between MAIN and AUX
to see if the signal comes back.
Greg
AB7R
-----Original Message-----
From: [email protected]
[mailto:[email protected]]on Behalf Of Randy Downs
Sent: Friday, December 26, 2008 5:46 PM
To: [email protected]; [email protected];
[email protected]
Subject: [Elecraft] KRX3 Problem
It seems my second receiver has went deaf. A 20 over signal
gives me about an s3 on the sub. I can barely hear the signal phone or cw. I
unplugged the tmp connector at the KAT3 and jumped the dipole directly into it
with the same results. Deaf all modes all bands. I checked connections etc and
see nothing obvious. Suggestions? Looks like it would be tough to get to
anything to troubleshoot. Worked fine last night. Got home from work and it was
dead.
Randy
K8RDD
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