[Elecraft] CM500 headset on K3S and KX3?

[Fred Jensen]

History is more than a little ambiguous. Wikipedia ascribes the "first 
high-powered" Talk Box to Bob Heil [K9EID] for Joe Walsh, [WB6ACU] which 
was a 250 watt amp + hi-pass filter.  However, Walsh credits an EE and 
steel guitarist [Bill West] with inventing it.

Peter Townshend claims to have invented a version of the Talk Box during 
a Who tour in 1976.  However, Bob Heil sold the manufacturing rights to 
Dunlop Mfr. building them to Heil's 1973 design standards.  Peter 
Frampton says he first heard a Talk Box in 1970, and that Bob Heil gave 
him a custom built one as a Christmas present in 1974.  He became 
proficient at it and is now often associated with it.  It appears that 
every musical performer since then has used a Talk Box and at least a 
few assert invention.

I use a Heil ProSet IC however I'm rarely on SSB.  When I have been on, 
I often get unsolicited "great audio" comments, no doubt because of my 
sonorous broadcast voice as much as the proset. [:=)  I use a CM-500 
when operating W7RN remotely but I've never done phone remote.  I find 
the ProSet to be a little easier on the ears with prolonged use than the 
CM-500, but both work well for me.  As has been mentioned, a lot depends 
on how you place the mic and how you tailor the TX response and 
compression.  I guess all microphones tend to accentuate the bass as you 
get closer and closer, exactly the opposite of what you want for 
communications. Electrets seem to be fairly immune to this, the old 
classic RCA 44-BX was notorious for the effect.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

> On Wed, May 6, 2020, 13:51 <john at kk9a.com> wrote:
>
>> Interesting that Heil is not represented commercially. I believe that
>> Bob Heil invented the talk box that Peter Frampton made famous. I use
>> a Sony MDR-7506 for RTTY and CW but I do use a Heil ProSet IC for SSB.
>>
>> John KK9A
>>