[Elecraft] K3: two problems

[Ken K3IU]

Hi Werner:
With respect to your second problem, the mic high / low setting is 
working on #202 with latest firmware. It is easy to demonstrate if you 
set the MAIN:MIC SEL to high (rP.H in my case), set compression to 
zero(0), and MIC gain to zero(0), and the METER to display the ALC. Tap 
the XMIT button to key transmitter, speak into mic and increase the MIC 
gain to produce an ALC indication of 4-5. Then reset the the MAIN:MIC 
SEL to low (rP.L in my case). Now, without changing the MIC gain or the 
compression,  tap the XMIT button and speak into mic. I see no ALC 
action at this time. This clearly indicates that the high / low setting 
is working.
73,
Ken Wagner K3IU
K3 #202
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Werner Furlan wrote:
> today I observed a problem with my K3 ATU.
>
> on some bands the ATU does not find a fix.
> I connected the transceiver to a 50 ohm 100 Watt dummy load.
>
> I tried on 
>
> 1850 - no fix - rattle rattle - display says: - . - with Xmit: 1.0 - 1
> 3700 - quick fix 1.0 - 1
> 5330 - no fix  but when I press transmit it shows 1.2 - 1  1.0 ATU in bypass
> 7080 - no fix   with xmit 1.0 - 1
> 10142 - no fix  with xmit 1.4 - 1 (tuner inline - 1.0 - 1 tuner bypass)
> 14142 - quick fix 1.0 - 1
> 18068 - quick fix 1.0 - 1
> 21000 - quick fix 1.0 - 1
> 24890 - quick fix 1.0 - 1
> 28000 - quick fix 1.0 - 1
> 50750 - quick fix 1.0 - 1
>
>
>
> second problem: 
> I have the impression that the switch from Mic high and low level does not 
> work anymore. I observed a low power output (about 40W max) with Mic 
> high sensitivity, and no change when I switch to low. Front and Back panel is 
> the same.
>
> I hope I can get a hint where to look. 
>
>
> 73! de Werner OE9FWV
>
>