[Elecraft] New KX2 No Transmit

[Guy Olinger K2AV]

May not apply in your case, but male BNC connectors can sometimes have
the center pin retracted a bit. This can cause the connection to just
barely fail in some female connectors and not in others.

PROVE that external connections are not the problem before tearing
apart the rig or sending it back to Elecraft.

25:1 SWR means no connection on center pin somewhere very close.

73, Guy K2AV

On Sun, Jul 3, 2016 at 12:51 PM, George King <georgeking at twc.com> 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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