[Elecraft] K3/O-Mini + Remote Rig Configuration for Heil Headset

[Hisashi T Fujinaka]

I replied directly to Barry, but I'm fairly certain the Heil element is
NOT dynamic and needs bias.

There's a jumper AND the menu setting. I forget what the defaults are
because I played with both to get this exact setup to work.

On Wed, 24 Dec 2014, Don Wilhelm wrote:

> Barry,
>
> I cannot comment on the RemoteRig setup because I do not have any 
> experience with it.
>
> There are some statements that may require clarification - I think the 
> Heil document is somewhat confusing.
> 1) For a dynamic microphone, turn bias off.
> 2) The K3 (and K3/0 and mini) can turn bias on or off - so it is not 
> dependent on electret microphones such as the Elecraft MH2.  The choice 
> of bias or not is a user choice in the menu.
> 3) The Heil microphone elements are relatively low output.
> 4) The K3 microphone "L" or "H" selection determines the gain of the 
> microphone preamp.  "L" is low amplification, and "H" is higher 
> amplification.  With Heil microphones, you may have to use the "H" setting.
> 5) Try the "H" setting with bias off in the menu and see if you can get 
> the required 5 to 7 bars on the ALC meter.
>
> 73,
> Don W3FPR
>
> On 12/24/2014 1:30 AM, Barry Baines wrote:
>> I am having difficulties getting my Heil ProSet with the HC-4/HC-5 mic 
> cartridge to work with the K3/O-Mini + RemoteRig (purchased from Elecraft) 
> where there is no audio reaching the K3 at the radio site.  I?m told that the 
> Heil mic cartridge is a dynamic element with no pre-amp gain.  The mic 
> connection for the K3 is set for the rear panel with no Bias and ?Low? Gain 
> per the Heil documentation on their website (?All Things Elecraft?).   The 
> incoming audio (transmit) is fed from the Remote Rig-Remote front panel 
> Aux/Mic using the supplied cable from Elecraft that connects to both the PTT 
> In and Mic-Mono at the back of the K3.
>>
>> I?ve tried various configuration setups with the Control-RR to see if 
> changing the audio level from the control site makes a difference, such as 
> increasing the Codec inp gain, changing Codec Inp preamp to ?no? and varying 
> the Audio Quality specified at both remote rig units.  Using TX-Test, I then 
> speak into the Mic and check for ALC and compression, varying the mic gain 
> and compression.  At no time do I see any measurement on the K3/O-Mini meters 
> for ALC and compression.  The ?monitor? capability is also not working as I 
> can?t hear myself through the headset.
>>
>> I?m wondering if the Remote Rig system is setup for the Elecraft MH-2 mic 
> which I understand does have amplification.  If so, this may prevent a 
> dynamic mic cartridge working properly with Remote Rig-Control.  I?ve tried 
> using the mic input on the side of the K3/O-mini as well as using the Kenwood 
> adapter to utilize the 8-pin connector.  I saw a note the other day from 
> Mark, VA2MM which shows his setup for the Radio Side and Control Side;  those 
> settings didn?t work. I?ve tried the default settings specified in the 
> ?K3-Remote Owner?s Manual? with no success.
>>
>> I have excellent audio quality coming from the K3 to the K3/O-Mini unit; 
> the receiver audio sounds fine at the control site. I presume this means that 
> there is a good audio connection between the two remote rigs. The radio site 
> uses DSL with a low bandwidth (10 Mpbs Down/784 Kpbs Up) so if the receiver 
> audio is good, I?m presuming that bandwidth wouldn?t be the problem on the 
> transmit side as it would be on the higher capacity downlink to the DSL site.
>>
>> Any suggestions on what to check either in the K3 configuration or the 
> Remote Rig setup at either the control site or the remote site?  Given that 
> the connection is through the internet, are there any router or other 
> considerations that I should check?  At the Remote (radio) site, I?m using 
> the default UDP/TCP configurations for RRIG_cmd, RRIG_audio, and RRIG_sip 
> with port forwarding to the Remote Rig-Radio.   I do have the ability to 
> access the Remote Rig-Remote from the control site so that I can make 
> configuration changes at both ends and restart both Remote Rig devices. 
> Consequently, I can update both Remote Rig boxes (control and remote) as 
> needed.
>>
>> I should also note that the last time I was at the remote site, I was able 
> to test the system at the station itself and  push audio from the K3/O-Mini 
> to the K3 via the Local Area Network when the K3/O-mini was next to the K3 on 
> the same LAN.   When I got back to the ?control site? , I had no transmit 
> audio at al to the K3..  That may suggest an internet issue, but at this 
> point I have no real handle on the source of the problem.
>>
>> Thanks and Merry Christmas,
>>
>> Barry Baines, WD4ASW
>> Westborough, MA (Control Site)
>> Folkston, GA (Remote Site)
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-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee