Hi Guy,
Small wire in center pin connector - no change. No burr on the
connector. Connection feels normal - not too hard or too easy. Center
pin receptacle not spread. 50 ohm connector.
I did make a test lead with a BNC female connector on one end and the 2
pin Molex on the other and hooked the antenna up through this test lead
- same problem.
Thanks for trying to help. It's got to be an antenna connection problem
somewhere. Receive is good - good audio.
73, George W5AGK
On 7/3/2016 2:28 PM, Guy Olinger K2AV wrote:
It just sounds, walks and talks like a BNC problem.
Try a small guage wire about 10 foot long directly inserted into the
center pin connector, and retry. See if the SWR comes down to some
degree, if you hear anything on RX. If so, then for whatever reason,
the cable BNC pin is not making contact with the jack's center pin
receptacle.
See if there is a burr on the outside of the BNC jack barrel that
prevents being able to shove the BNC all the way home.
Is the twist motion at the end of hooking up reasonably easy? It
shouldn't be hard if it's shoved all the way home.
See if the center pin receptacle in the BNC jack seems "spread apart".
There have been poor quality BNC plugs with oversized pins which
spread apart the center pin receptacles in BNC jacks and cause
problems later.
Hardware is not always good. I once had to deal with a Type F
connector that lacked threads to grab the threads on the jack's
barrel.
The BNC jack can be bad, or a cold solder joint to the circuit board,
etc, etc. It just sounds like BNC problems.
You wouldn't be using 75 ohm BNC plugs would you? I remember something
about 75 ohm BNC hardware causing problems.
73, Guy K2AV
On Sun, Jul 3, 2016 at 3:06 PM, George King <[email protected]> wrote:
Thanks Matt,
I did check both connectors and they are both seated.
73, George W5AGK
On 7/3/2016 11:56 AM, Matt Zilmer wrote:
Hi George,
You should check the two RF cables to make sure they're seated. There is
one cable from the ATU to the RF board (two-pin connector at the RF board),
and another from the BNC socket to the ATU. Both of these need to be seated
in order for the KX2 to work. The 25.4:1 SWR indication usually means the
BNC to ATU cable isn't seated, but I would check both.
73!
Matt W6NIA
On 07/03/2016 09:51 AM, George King wrote:
I just received my KX2 and really like it. I have the ATU and battery
installed. Receive works fine, but I cannot transmit. When I press PTT I
get several beeps and in some cases the radio shuts off. Sometimes I get a
Hi CUR message. Here is some data:
7.213 MHz, Voltage 11.7, Power set at 8 watts. When I press ATU to
tune the tuner works hard and displays 25.4 - 1 while trying to tune and
never changes. Is this telling me the SWR is 25.4:1? The antenna SWR
checked at the BNC connector on the antenna at the radio with an MFJ 259B is
1.3:1
7.285 MHz, Voltage 11.7, Power 8 watts, SWR checked with MFJ 259B is
2.0:1. Same result when I press ATU.
When I bypass the ATU I still get the same result except that I do not
see the 25.4 - 1 display.
Also, same result on all other bands. I installed the side panels before
I tried to transmit. I thought maybe I had a bad antenna connection. A
check with an ohm meter shows a good connection between the BNC connector
and the antenna connection on the ATU board.
I checked the connector from the ATU to the RF board and it seems to be
mated properly. I tried transmitting into a 50 ohm dummy load with the same
result. I made a jumper cable with a BNC connect on it and connected it to
the ATU bypassing the installed BNC connector - same result.
SN is 463, just installed firmware 2.66. Did not try to transmit before
upgrading to 2.66 or installing the side panels. Seems to me I have a bad
antenna connection somewhere. Does this make sense?
Any help will be appreciated.
George King W5AGK
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