[Elecraft] Err TXF

[Bill W4ZV]

G4ILO wrote:
> 
> 
> M0XDF wrote:
>> 
>> Yep - it was me - somehow, I was trying to tx LSB via a 400Hz  - now I
>> know
>> I set that correctly - I checked it 3 times
>> 
> I got this error this morning following a suggestion from Lyle to try
> setting the FLx BW value to a lower value that might more closely match
> the filter's real bandwidth, in order to try to correct the difference
> between USB and LSB that I have noticed. I can understand why it might
> object to transmitting SSB through a 400Hz filter, but 2.4KHz ought not to
> give a problem.
> 

Maybe not, but I believe the firmware is set up to allow SSB and CW TX
**ONLY** through the 2.7k 5-pole or 2.8k 8-pole.  If you set 2.4 kHz it will
not allow TX.  This is why EVERY K3 must have either of those two filters
installed and why you must not try to fool it by setting "FLx BW" lower than
2.7k.  

FYI, I tried using the 1.0k 8-pole on CW (before this option was locked out
by firmware) and I got a *worse* key click report than when using the 2.7k. 
So there are good reasons behind Elecraft's lockouts.

73,  Bill  W4ZV

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