[ICOM] Heil PRO-SET PLUS!ic and RIGblaster Pro

[Jack/AE7DX]

Steve wrote:

> I've been tinkering off and on for about six months trying to get a 
> Heil PRO-SET PLUS!ic to work properly with a RIGblaster Pro. The radio 
> is an IC756PROII.
>
> My difficulty lies in recording wav files with the RIGblaster Pro in 
> line between the Heil PRO-SET PLUS!ic and the PC sound card.
>
> If I record a wav file using the Heil PRO-SET PLUS!ic (set to either 
> icom or DX) plugged into the RigBlaster Pro mic 2 input, the level is 
> about 20-30db lower than wav files recorded with my Icom SM-20 desk 
> mic plugged into the RigBlaster Pro. And the low's are noticably 
> attenuated when using the Heil.
>
> If I record a wav file using the Heil PRO-SET PLUS!ic (set to icom) 
> plugged directly into the computer sound card MIC IN, I get lots of 
> level and no low end roll off. And the Heil PRO-SET PLUS!ic works as 
> expected when connected to the radio.
>
> For some reason the audio path through the RIGblaster Pro doesn't work 
> well for the Heil PRO-SET PLUS!ic.
>
> Any experience or ideas to try?
>
> Thanks.
>
> Steve K8JQ

Just a thought, Steve, but I wonder if the impedance of the input to the 
RIGblaster Pro is sufficiently different from the IC756ProII to affect 
the frequency response of the mike element? I have no experience with 
either piece of gear but I have seen that sort of behavior in broadcast 
audio systems.

73,

Jack, AE7DX