[Elecraft] Firing up K3 SN 2051 -Help

[N8XPQ]

Randy,

How do you have the microphone connected to the rig? You mentioned that you
are using the rear mic connections. Have you made you own adapter? I had
attempted to use the same mic and re-wired it for my K3 and it just didn't
work properly. I know this mic requires an input voltage, however I don't
remember what it is. I want to say it is 8v, and I don't think that the K3
bias is the same, which introduced the problem. Just a few thoughts.

Mike N8XPQ

Randy Cook wrote:
> 
> I got some time last weekend, and a bit this week, and s/n 2051 is  
> alive.  Assembly was relatively easy, and 98% of the manual is spot - 
> on, so I am very satisfied.  The firmware download worked on my Mac  
> the first time and MacloggerDX connected immediately after I set the  
> correct baud rate in the K3 and hooked up a cheap eBay USB to serial  
> cable.
> 
> I do have an issue, and would ask the group for help. I will call  
> Elecraft again on Monday, but hopefully it is minor and I can resolve  
> tomorrow.
> 
> All tests went well. I walked though all the settings in Config and  
> Menu. When I did the initial Transmitter Gain test with 5 watts, the  
> 'dummy load' I made turned out to have a lot of reactance.    After a  
> quick call to Elecraft, I made a new load, tested it on a simple  
> antenna analyzer, (MJF 239) and it was 50.4 ohms/no reactance across  
> the ham bands. I then re-did the Transmitter Gain at 5 watts, and got  
> 1.0-1 across all bands.
> 
> So far so good.  I used a Yaseu MD-100 mic into the rear mic input,  
> set the appropriate menu (rear input, no bias, mic low). I am now  
> doing the Transmitter Setup on page 26.  I configured the xtal via the  
> K3 utility.  OK.
> 
> I cannot transmit audio.   The Voice Monitoring setup works, and I can  
> adjust the MON function and hear audio in the speaker and the  
> headphones, so the Mic works. When I go to Mic Gain and Compression  
> Settings,  I cannot get any CMP or ALC indications on my meter.   If I  
> transmit, the TX light is on, the resistors get a bit warm, but  
> nothing indicated on the SW or RF meter and nothing on CMP or ALC  
> meters.  It is if the modulation doesn't work.  I tested it on 40m  
> LSB. Nothing.
> 
> Any ideas?
> 
> 73
> 
> 
> Randy Cook
> k6crc at arrl.net
> 
> 
> 
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