K2 Mic

[Don Rasmussen]

Forward by DC0ZO

Dear all,

 I want to order a Heil Proset. Which mircophone ist
th e best one for the k2? You can buy the Prosets
with HC4, HC5, ICOM or elecraft mic. Where is the
difference?

Thanks for your answer

Michael, DC0ZO, K2#5619
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[Augie "Gus" Hansen]

Don Rasmussen wrote:
> Forward by DC0ZO
>
> Dear all,
>
>  I want to order a Heil Proset. Which mircophone ist
> th e best one for the k2? You can buy the Prosets
> with HC4, HC5, ICOM or elecraft mic. Where is the
> difference?

I use a two-lead electret element (Radio Shack) wired for Icom . My K2
mic input is configured for Icom pin-outs and has a 5.6K resistor to
provide power to the electret's built-in FET preamp. The mic provides
plenty of output to drive the AF and VOX circuits without any mods to
the rig.

The Heil HC4/5 elements are dynamic types that produce about 10dB less
output than most other dynamic mics and usually require the use of a
preamp to drive the K2. I know some K2 operators have had success with
them, but I have to shout to make them work with my K2.

Gus Hansen
KB0YH

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[Mark J. Schreiner]

Hallo Don,

I use the Heil Proset Plus which has the HC4 & HC5 elements.  I like to
ragchew and I like to contest and work DX, so I use both elements
depending on the situation.  When contesting for smaller contests such
as the upcoming 50th anniversary of the PA QSO Party on the 2nd weekend
of October (shameless plug, http://www.nittany-arc.net/paqso.html) I use
the HC5 and then switch over to the HC4 as the band conditions get more
crowded or I want to try to work that "rare" county for an extra
multiplier.  I use the Elecraft K2 and have gotten good audio reports
with it, but not as consistently as when I used to run an old Kenwood
TS-820S with a Shure AMB-75 microphone (DX stations often would comment
how good my audio was with that combination, plus the "room presence"
that occurred at that particular location, a bit of extra "echo" from
the hard concrete walls, I suspect).

I did change one resistor, though, to increase the microphone gain when
using the Heil microphones with the K2.  I think it was R14 on the SSB
board, and I changed it by a factor of 10 (although I don't recall the
original or new values right now, but it has been documented here on the
Elecraft site).

Viele Glueck!

Mark, NK8Q

Don Rasmussen wrote:

> Forward by DC0ZO
>
> Dear all,
>
>  I want to order a Heil Proset. Which mircophone ist
> th e best one for the k2? You can buy the Prosets
> with HC4, HC5, ICOM or elecraft mic. Where is the
> difference?
>
> Thanks for your answer
>
> Michael, DC0ZO, K2#5619
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft   
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>  

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