Re: [Elecraft] Help with cheap headset and K2

[Daniel Schlieper]

Hi Werner,

maybe you could use a cheap headset and  optimise the frequency response?

Here are some ideas about using cheap lightweight computer headsets:
http://www.qrpforum.de/thread.php?threadid=3068
(This discussion is in German).

73 Daniel M0ERA

--
Oxted, Surrey, UK
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Re: [Elecraft] Help with cheap headset and K2

[Dr. Werner Furlan]

hi Bill, 

I have tried a Plantronics Computer Headset in the past with my K2.
I made an adapter like you did but with the internal 5V bias. 
Audio reports were worse than with the dynamic Kenwood microphone I 
used before. 
I tried this special microphone because G4ILO recommended it on his 
homepage. (http://www.g4ilo.com/k2_headset.html). I had hoped that I could 
make better use of the VOX in the K2, but it was not good enough for my 
low voice.
In the meantime I connected it to the K3 and listened to myself and now I 
know why the reports were bad. The frequency response of the microphone 
is not good for this purpose.
In the K3 I could compensate it with the equalizer, but together with the K2 
you are probably lost. 
Now I am waiting for the Sennheiser PC 150 now, maybe this is better.
My usual headset is the Heil Proset with HC5 element. The reason why I am 
looking for an alternative is the weight of the Heil headset and the earpads 
make a pressure on the arms of my glasses and this hurts after some time.

73! de Werner
OE9FWV



On 18 May 2008 at 16:06, nz0t wrote:

> 
> Just for grins I bought a cheap Cyber Acoustics computer headset to
> use with my K3 when it arrives.  Others have said they got good
> reports with their K3 and this headset which uses an electret mic and
> a 3.5MM stereo mini plug. Not wanting to cut off the plug which fits
> into the back of the K3 I made up an adapter for my K2 using an inline
> stereo jack, an 8 pin mike plug and a 9 volt battery through a 5K
> resistor to power the mic.  My K2 is wired for the Kenwood mics and I
> don't want to power the mic from the rig.  I wired the grounds to the
> base of the plug, 9V DC through the 5K resistor to the middle and the
> mic positive to the tip.  It works but my reports with the K2 have not
> been very good.  I also made up an adapter for my Drake TR7 and
> reports on that rig are fine. Am I doing something wrong with the K2? 
> I know little about electret mics and maybe I am using too much
> voltage or the wrong resistor.  Any help would be greatly appreciated.
> If I can't get it to work the headset was only about $15 shipped so no
> big deal.
> 


--  
Genetic Engineering Splits Scientists



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Re: [Elecraft] Help with cheap headset and K2

[nz0t]

Well understood Steve!  LOL

n4lq wrote:
> 
> Bill
> My warranty only covers use with the K3. :*)
> Steve Ellington
> [EMAIL PROTECTED]
>  Version: 8.0.100 / Virus Database: 269.23.20/1453 - Release Date:
> 5/18/2008 
> 9:31 AM
> 
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> 

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Re: [Elecraft] Help with cheap headset and K2

[n4lq]

Bill
My warranty only covers use with the K3. :*)
Steve Ellington
[EMAIL PROTECTED]
- Original Message - 
From: "nz0t" <[EMAIL PROTECTED]>

To: 
Sent: Sunday, May 18, 2008 7:06 PM
Subject: [Elecraft] Help with cheap headset and K2




Just for grins I bought a cheap Cyber Acoustics computer headset to use 
with
my K3 when it arrives.  Others have said they got good reports with their 
K3

and this headset which uses an electret mic and a 3.5MM stereo mini plug.
Not wanting to cut off the plug which fits into the back of the K3 I made 
up
an adapter for my K2 using an inline stereo jack, an 8 pin mike plug and a 
9
volt battery through a 5K resistor to power the mic.  My K2 is wired for 
the

Kenwood mics and I don't want to power the mic from the rig.  I wired the
grounds to the base of the plug, 9V DC through the 5K resistor to the 
middle

and the mic positive to the tip.  It works but my reports with the K2 have
not been very good.  I also made up an adapter for my Drake TR7 and 
reports

on that rig are fine.
Am I doing something wrong with the K2?  I know little about electret mics
and maybe I am using too much voltage or the wrong resistor.  Any help 
would

be greatly appreciated.
If I can't get it to work the headset was only about $15 shipped so no big
deal.

73 Bill NZ0T
--
View this message in context: 
http://www.nabble.com/Help-with-cheap-headset-and-K2-tp17308871p17308871.html

Sent from the Elecraft mailing list archive at Nabble.com.

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No virus found in this incoming message.
Checked by AVG.
Version: 8.0.100 / Virus Database: 269.23.20/1453 - Release Date: 5/18/2008 
9:31 AM


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[Elecraft] Help with cheap headset and K2

[nz0t]

Just for grins I bought a cheap Cyber Acoustics computer headset to use with
my K3 when it arrives.  Others have said they got good reports with their K3
and this headset which uses an electret mic and a 3.5MM stereo mini plug. 
Not wanting to cut off the plug which fits into the back of the K3 I made up
an adapter for my K2 using an inline stereo jack, an 8 pin mike plug and a 9
volt battery through a 5K resistor to power the mic.  My K2 is wired for the
Kenwood mics and I don't want to power the mic from the rig.  I wired the
grounds to the base of the plug, 9V DC through the 5K resistor to the middle
and the mic positive to the tip.  It works but my reports with the K2 have
not been very good.  I also made up an adapter for my Drake TR7 and reports
on that rig are fine.
Am I doing something wrong with the K2?  I know little about electret mics
and maybe I am using too much voltage or the wrong resistor.  Any help would
be greatly appreciated.
If I can't get it to work the headset was only about $15 shipped so no big
deal.

73 Bill NZ0T
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View this message in context: 
http://www.nabble.com/Help-with-cheap-headset-and-K2-tp17308871p17308871.html
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