[Elecraft] K2 - hang up problem

[AD6XY - Mike]

That narrows down the fault to the SSB module. Check it has not come loose.
Also, check the filter settings have not become corrupted in the firmware.

Mike



N2TK, Tony wrote:
> 
>  Hi Mike,
> For clarification, when this happens there is no longer any RF output. And
> it only happens when I speak into the mike or key the rig while in SSB
> mode.
> It does not happen if I am in CW mode. 
> 
> Tnx for the suggestions. I will post what I find  that corrects the
> problem
> once I get it fixed.
> 
> 73,
> N2TK, Tony
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of AD6XY - Mike
> Sent: Saturday, February 02, 2008 4:05 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K2 - hang up problem
> 
> 
> Fixing it by changing bands and weak reception afterwards is the key to
> this.
> No SSB is also a clue. I would say you have a problem in the switching
> between TX and RX. It is not the RF side of things (e.g. switching diodes)
> as it would not reset, it must be in the control signals. Somehow the +TX
> and +RX control lines are not doing what they should be. The fact that is
> does still TX OK probably means the +TX line is fine. I would concentrate
> on
> the +RX line. Also look for any bad contacts or short circuits. This could
> also be a software glitch, and a full reset to factory defaults may clear
> it
> up.
> 
> Mike
> 
> 
> 
> N2TK, Tony wrote:
>> 
>> 
>> Before I tear into the K2 to find  out what happened today I figured I
>> would
>> ask on here in case someone has seen this  problem before.
>> 
>> It receives fine on all bands. When I transmit (does not matter what
>> power
>> level or what band) it hangs up. If I keep it on the transmit mode power
>> out
>> is fine. If I let it go back to the receive mode the receive signals are
>> very, very weak. If I talk into the mike, there is no power out and I
>> have
>> side tone in the headset so I can listen to my transmit audio.
>> To correct this problem I need to change bands or shut off then on the
>> radio. 
>> 
>> Anyone hear of this problem before?
>> 
>> Tnx for any ideas before I pull out the schematics and take off the
>> covers.
>> 
>> 73,
>> N2TK, Tony
> 
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