6 - 10 preamp not working

[Larry Snyder]

I ordered the 6-10 preamp and it doesn't appear to work.

 

I used the DB-15 Y cable from the radio - one end connected to the DB-15 to
the preamp and the other with the supplied mini gender changer (which
doesn't have the black dot on it according to the documentation)  connected
to the KAT500 which then connected to the KPA500.

 

The power for the preamp is connected to the RCA which is connected to the
RCA splitter connected to the back of the K3.  The other end of the RCA
connects to the KAT500.

 

I went to 10 meters on the K3.

 

I set CONFIG->DIGIOUT I to ON.

 

I am on the 10 meter repeater in NY on 29.620 - with the tone.   It keys up
fine and I can hear the repeater without the RX ANT selected.

 

I key the repeater

 

I hear the repeater


I hit RX ANT and I hear only static.  I key the repeater and hear static
only.  Release the RX ANT and I hear the repeater.


on the P3 The waveform at the bottom is -125 to -130 with the RX ANT not
enabled.  When I hit RX ANT the whole waveform drops to -140.

 

The 6-10 preamp will click with I unplug the 12 volts (so I know it is
getting 12 volts).

 

Any ideas??

 

73s HK2LS

 

 

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[Mike K2MK]

Hi Larry,

Probably a pin 11 problem in the accessory cable leading to the KPA500. Search the archive for "pin 11 problem".

This comes up frequently enough that Elecraft should document it in the KPA500 manual and the PR6 and PR6-10 instructions.

73,
Mike K2MK

Larry Snyder wrote

I ordered the 6-10 preamp and it doesn't appear to work.

I used the DB-15 Y cable from the radio - one end connected to the DB-15 to
the preamp and the other with the supplied mini gender changer (which
doesn't have the black dot on it according to the documentation)  connected
to the KAT500 which then connected to the KPA500.

The power for the preamp is connected to the RCA which is connected to the
RCA splitter connected to the back of the K3.  The other end of the RCA
connects to the KAT500.

I went to 10 meters on the K3.

I set CONFIG->DIGIOUT I to ON.

I am on the 10 meter repeater in NY on 29.620 - with the tone.   It keys up
fine and I can hear the repeater without the RX ANT selected.

I key the repeater

I hear the repeater

I hit RX ANT and I hear only static.  I key the repeater and hear static
only.  Release the RX ANT and I hear the repeater.

on the P3 The waveform at the bottom is -125 to -130 with the RX ANT not
enabled.  When I hit RX ANT the whole waveform drops to -140.

The 6-10 preamp will click with I unplug the 12 volts (so I know it is
getting 12 volts).

Any ideas??

73s HK2LS

[Michael Eberle]

Does it work on 6 meters?  CONFIG->DIGOUT 1 is set on per-band basis but
that is probably not a problem if it is getting 12 volts.

The first thing I would check if it doesn't work on 6 or 12, (because it
is something I would likely do) is make sure it is connected on the back
of the radio to RX In and Out and not XVTR In and Out.  Also check to
see that the amp itself is has the PREAMP side connected to the radio
and not BYPASS.

Mike
KI0HA

On 6/11/2015 2:08 PM, Larry Snyder wrote:

> I ordered the 6-10 preamp and it doesn't appear to work.
>
> I went to 10 meters on the K3.
>
> I set CONFIG->DIGIOUT I to ON.
>
> The 6-10 preamp will click with I unplug the 12 volts (so I know it is
> getting 12 volts).
>
>  
>
> Any ideas??
>
>  
>
> 73s HK2LS
>
>  
>
>  
>
>

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