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K3: CM500 vs. SB40

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N2TK

K3: CM500 vs. SB40

I have been using a Yamaha CM500 for a few years and have been very happy
with it. I just bought a Koss SB40 as a backup. The Koss looks like the
Yamaha except the Koss doesn't use a biased mike element. With the Koss I
had to go to FP.H. Also my breath trips the Vox but I have to have the mike
gain and Vox gain quite a bit higher than the Yamaha to get similar output
for both mikes. I do have a somewhat bassier voice.

My transmit equalizer is

-16

-16

-7

0

0

+4

+10

0

Any thoughts or comments?

Thanks

N2TK, Tony

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Dave Hachadorian-2

Re: K3: CM500 vs. SB40

The SB-40, with its dynamic mic element, has a lot of bad
reviews on Amazon regarding mic audio quality, so I never have
tried it.

The Koss SB-45 on the other hand, with its electret element,
sounds great, and is very comfortable and affordable. I prefer
it over my Yamaha CM500 because it has a nice padded headband
that doesn't abrade my bald head like the rough webbing on the
CM500.

So how is the SB-40 working for you? Are you happy with the
sound in the monitor, and with on the air reports?

Dave Hachadorian, K6LL
Yuma, AZ

-----Original Message-----
From: N2TK, Tony
Sent: Tuesday, March 20, 2018 4:18 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] K3: CM500 vs. SB40

I have been using a Yamaha CM500 for a few years and have been
very happy
with it. I just bought a Koss SB40 as a backup. The Koss looks
like the
Yamaha except the Koss doesn't use a biased mike element. With
the Koss I
had to go to FP.H. Also my breath trips the Vox but I have to
have the mike
gain and Vox gain quite a bit higher than the Yamaha to get
similar output
for both mikes. I do have a somewhat bassier voice.

My transmit equalizer is

-16

-16

-7

0

0

+4

+10

0

Any thoughts or comments?

Thanks

N2TK, Tony

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Don Wilhelm

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

Tony,

You might want to try the noise gate menu.

73,
Don W3FPR

On 3/20/2018 7:18 PM, N2TK, Tony wrote:
> I have been using a Yamaha CM500 for a few years and have been very happy
> with it. I just bought a Koss SB40 as a backup. The Koss looks like the
> Yamaha except the Koss doesn't use a biased mike element. With the Koss I
> had to go to FP.H. Also my breath trips the Vox but I have to have the mike
> gain and Vox gain quite a bit higher than the Yamaha to get similar output
> for both mikes. I do have a somewhat bassier voice.
>
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Joe Subich, W4TV-4

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

> My transmit equalizer is
>
> -16
> -16
> -7
> 0
> 0
> +4
> +10
> 0
>
> Any thoughts or comments?

+4 at 1600 Hz and +10 at 2400 Hz are rather aggressive and may
contribute to the excess sensitivity to breath sounds. I'd be
looking at +3, +5 (which represents 3 db/octave) or +2, +3 (close
to 2 dB/octave) instead of the almost 6 db/octave your settings
represent.

Even the most aggressive of the "articulated" (aka, "DX") mics don't
have more than 6 or 7 dB boost at 3 KHz.

73,

... Joe, W4TV

On 3/20/2018 7:18 PM, N2TK, Tony wrote:

> I have been using a Yamaha CM500 for a few years and have been very happy
> with it. I just bought a Koss SB40 as a backup. The Koss looks like the
> Yamaha except the Koss doesn't use a biased mike element. With the Koss I
> had to go to FP.H. Also my breath trips the Vox but I have to have the mike
> gain and Vox gain quite a bit higher than the Yamaha to get similar output
> for both mikes. I do have a somewhat bassier voice.
>
> My transmit equalizer is
>
> -16
>
> -16
>
> -7
>
> 0
>
> 0
>
> +4
>
> +10
>
> 0
>
>
>
> Any thoughts or comments?
>
> Thanks
>
> N2TK, Tony
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Jim Brown-10

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

On 3/20/2018 4:18 PM, N2TK, Tony wrote:
> Also my breath trips the Vox but I have to have the mike
> gain and Vox gain quite a bit higher than the Yamaha to get similar output
> for both mikes.

That makes me suspect that the mic is a cardioid, which is essentially a
"half-sphere" directional mic. This generic mic type suffers from
proximity effect, which boosts low-frequency sounds that are close to
it. Breathe is a low-frequency sound.

There is no proximity effect at right angles to the diaphragm of a
cardioid, so if you want to continue using it, orient it that way and
place it several inches above and to the side of your mouth. You may
need to turn up the gain. Several days ago, I posted recommended
starting EQ settings. You might want to refer to that post.

Or maybe not try to put lipstick on the pig, and take K6LL's very good
advice.

73, Jim K9YC

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N2TK

Re: K3: CM500 vs. SB40

In reply to this post by Don Wilhelm

Hi Don,
Tnx for input. No noise in shack. The noise gate did not make any difference.
73,
N2TK, Tony

-----Original Message-----
From: Don Wilhelm [mailto:[hidden email]]
Sent: Tuesday, March 20, 2018 7:32 PM
To: N2TK, Tony <[hidden email]>; 'Elecraft Reflector' <[hidden email]>
Subject: Re: [Elecraft] K3: CM500 vs. SB40

Tony,

You might want to try the noise gate menu.

73,
Don W3FPR

On 3/20/2018 7:18 PM, N2TK, Tony wrote:
> I have been using a Yamaha CM500 for a few years and have been very
> happy with it. I just bought a Koss SB40 as a backup. The Koss looks
> like the Yamaha except the Koss doesn't use a biased mike element.
> With the Koss I had to go to FP.H. Also my breath trips the Vox but I
> have to have the mike gain and Vox gain quite a bit higher than the
> Yamaha to get similar output for both mikes. I do have a somewhat bassier voice.
>

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N2TK

Re: K3: CM500 vs. SB40

In reply to this post by Dave Hachadorian-2

Hi Dave,
Tnx for the input. The SB-40 looks and feels like the CM-500 but it doesn't
play like it. The CM-500 sounds better in the monitor and gives better (more
piercing ) audio reports.
Going to get the SB-45 to try.
73,
N2TK, Tony

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Dave Hachadorian
Sent: Tuesday, March 20, 2018 7:31 PM
To: Reflector Elecraft <[hidden email]>
Subject: Re: [Elecraft] K3: CM500 vs. SB40

The SB-40, with its dynamic mic element, has a lot of bad reviews on Amazon
regarding mic audio quality, so I never have tried it.

The Koss SB-45 on the other hand, with its electret element, sounds great,
and is very comfortable and affordable. I prefer it over my Yamaha CM500
because it has a nice padded headband that doesn't abrade my bald head like
the rough webbing on the CM500.

So how is the SB-40 working for you? Are you happy with the sound in the
monitor, and with on the air reports?

Dave Hachadorian, K6LL
Yuma, AZ

-----Original Message-----
From: N2TK, Tony
Sent: Tuesday, March 20, 2018 4:18 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] K3: CM500 vs. SB40

I have been using a Yamaha CM500 for a few years and have been very happy
with it. I just bought a Koss SB40 as a backup. The Koss looks like the
Yamaha except the Koss doesn't use a biased mike element. With the Koss I
had to go to FP.H. Also my breath trips the Vox but I have to have the mike
gain and Vox gain quite a bit higher than the Yamaha to get similar output
for both mikes. I do have a somewhat bassier voice.

My transmit equalizer is

-16

-16

-7

0

0

+4

+10

0

Any thoughts or comments?

Thanks

N2TK, Tony

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N2TK

Re: K3: CM500 vs. SB40

In reply to this post by Joe Subich, W4TV-4

Joe,
Tnx for the input. I made the changes to the transmit equalizer. But still
the CM-500 sounds better.
Thank goodness the SB-40 is cheap enough to put to the side.
73,
N2TK, Tony

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
Sent: Tuesday, March 20, 2018 7:40 PM
To: [hidden email]
Subject: Re: [Elecraft] K3: CM500 vs. SB40

> My transmit equalizer is
>
> -16
> -16
> -7
> 0
> 0
> +4
> +10
> 0
>
> Any thoughts or comments?

+4 at 1600 Hz and +10 at 2400 Hz are rather aggressive and may
contribute to the excess sensitivity to breath sounds. I'd be looking at
+3, +5 (which represents 3 db/octave) or +2, +3 (close to 2 dB/octave)
instead of the almost 6 db/octave your settings represent.

Even the most aggressive of the "articulated" (aka, "DX") mics don't have
more than 6 or 7 dB boost at 3 KHz.

73,

... Joe, W4TV

On 3/20/2018 7:18 PM, N2TK, Tony wrote:
> I have been using a Yamaha CM500 for a few years and have been very
> happy with it. I just bought a Koss SB40 as a backup. The Koss looks
> like the Yamaha except the Koss doesn't use a biased mike element.
> With the Koss I had to go to FP.H. Also my breath trips the Vox but I
> have to have the mike gain and Vox gain quite a bit higher than the
> Yamaha to get similar output for both mikes. I do have a somewhat bassier
voice.

>
> My transmit equalizer is
>
> -16
>
> -16
>
> -7
>
> 0
>
> 0
>
> +4
>
> +10
>
> 0
>
>
>
> Any thoughts or comments?
>
> Thanks
>
> N2TK, Tony
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]
>

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N2TK

Re: K3: CM500 vs. SB40

In reply to this post by Jim Brown-10

Jim,
Based on the input here and the results I am getting I don't think it is
wise to spend more time with the headset.
Tnx for the input.
N2TK, Tony

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Jim Brown
Sent: Tuesday, March 20, 2018 8:20 PM
To: [hidden email]
Subject: Re: [Elecraft] K3: CM500 vs. SB40

On 3/20/2018 4:18 PM, N2TK, Tony wrote:
> Also my breath trips the Vox but I have to have the mike gain and Vox
> gain quite a bit higher than the Yamaha to get similar output for both
> mikes.

That makes me suspect that the mic is a cardioid, which is essentially a
"half-sphere" directional mic. This generic mic type suffers from proximity
effect, which boosts low-frequency sounds that are close to it. Breathe is a
low-frequency sound.

There is no proximity effect at right angles to the diaphragm of a cardioid,
so if you want to continue using it, orient it that way and place it several
inches above and to the side of your mouth. You may need to turn up the
gain. Several days ago, I posted recommended starting EQ settings. You might
want to refer to that post.

Or maybe not try to put lipstick on the pig, and take K6LL's very good
advice.

73, Jim K9YC

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Edward R Cole

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

I have a related question. Considering the CM500 (or similar) for
use with my KX3 in outdoor conditions (windy beach or windy hilltop).

Also I wear over the ear hearing aids so need a headset that has a
muff the surrounds the ear. A headset sitting on my ear puts sound
into the ear; hearing aid mic is behind my ear. Comfort is also
important. I have a pair of stereo headsets made by Sony which have
nice soft cushions that surround my ear (but no boom mic).

So interested in opinions on different headsets with boom mic for outdoor use.

73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
[hidden email]

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Iain MacDonnell - N6ML-2

Re: K3: CM500 vs. SB40

Depends how big your ears are, I suppose... but for me, the CM500 is
more comfortable - the SB45 opening is quite a bit smaller, and
pinches my ears a bit. I also like the mesh band (CM500) better than
the squishy one (SB45)... but I'm not bald... yet....

73,

~iain / N6ML

On Tue, Mar 20, 2018 at 10:04 PM, Walter Underwood
<[hidden email]> wrote:

> The SB45 does appear to go around your ear.
>
> Another option is to add a boom mic to the headphones you like. The ModMic attaches to headphones.
>
> https://antlionaudio.com/
>
> Interesting, one of their sales regions is “Amateur Radio”. Here is a ModMic vendor that includes some mic adaptors.
>
> http://pileupdx.com/product-category/brands/antlion-modmic/
>
> They are also available at B&H and Amazon.
>
> https://www.bhphotovideo.com/c/buy/Shop-by-Brand-Antlion-Audio/ci/4/phd/3704379912/N/4294255798
> https://www.amazon.com/l/11391726011
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
>> On Mar 20, 2018, at 9:56 PM, Edward R Cole <[hidden email]> wrote:
>>
>> I have a related question. Considering the CM500 (or similar) for use with my KX3 in outdoor conditions (windy beach or windy hilltop).
>>
>> Also I wear over the ear hearing aids so need a headset that has a muff the surrounds the ear. A headset sitting on my ear puts sound into the ear; hearing aid mic is behind my ear. Comfort is also important. I have a pair of stereo headsets made by Sony which have nice soft cushions that surround my ear (but no boom mic).
>>
>> So interested in opinions on different headsets with boom mic for outdoor use.
>>
>> 73, Ed - KL7UW
>> http://www.kl7uw.com
>> Dubus-NA Business mail:
>> [hidden email]
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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Iain MacDonnell - N6ML-2

Re: K3: CM500 vs. SB40

Comparison: https://pasteboard.co/HcSCnnK.jpg

Yeah. I'm due for a new CM500. I thought I'd try the SB45, but don't
really like it :/

73,

~iain / N6ML

On Tue, Mar 20, 2018 at 10:29 PM, iain macdonnell - N6ML <[hidden email]> wrote:

> Depends how big your ears are, I suppose... but for me, the CM500 is
> more comfortable - the SB45 opening is quite a bit smaller, and
> pinches my ears a bit. I also like the mesh band (CM500) better than
> the squishy one (SB45)... but I'm not bald... yet....
>
> 73,
>
> ~iain / N6ML
>
>
>
> On Tue, Mar 20, 2018 at 10:04 PM, Walter Underwood
> <[hidden email]> wrote:
>> The SB45 does appear to go around your ear.
>>
>> Another option is to add a boom mic to the headphones you like. The ModMic attaches to headphones.
>>
>> https://antlionaudio.com/
>>
>> Interesting, one of their sales regions is “Amateur Radio”. Here is a ModMic vendor that includes some mic adaptors.
>>
>> http://pileupdx.com/product-category/brands/antlion-modmic/
>>
>> They are also available at B&H and Amazon.
>>
>> https://www.bhphotovideo.com/c/buy/Shop-by-Brand-Antlion-Audio/ci/4/phd/3704379912/N/4294255798
>> https://www.amazon.com/l/11391726011
>>
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/ (my blog)
>>
>>> On Mar 20, 2018, at 9:56 PM, Edward R Cole <[hidden email]> wrote:
>>>
>>> I have a related question. Considering the CM500 (or similar) for use with my KX3 in outdoor conditions (windy beach or windy hilltop).
>>>
>>> Also I wear over the ear hearing aids so need a headset that has a muff the surrounds the ear. A headset sitting on my ear puts sound into the ear; hearing aid mic is behind my ear. Comfort is also important. I have a pair of stereo headsets made by Sony which have nice soft cushions that surround my ear (but no boom mic).
>>>
>>> So interested in opinions on different headsets with boom mic for outdoor use.
>>>
>>> 73, Ed - KL7UW
>>> http://www.kl7uw.com
>>> Dubus-NA Business mail:
>>> [hidden email]
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]

Jim Brown-10

Re: K3: CM500 vs. SB40

In reply to this post by Iain MacDonnell - N6ML-2

Yes, personal fit and comfort is one of the most important
characteristics of headsets, especially when we wear them for long
periods. Which is a great reason why these observations from users is so
valuable. Whether the CM500 will work for Ed depends on the size of his
aids and exact dimensions of the phones. When I don't need a mic, I
usually wear Sony MDR-7506, which is more comfortable. BUT -- I think
the muffs are smaller than the CM500 muffs.

73, Jim K9YC

On 3/20/2018 10:29 PM, iain macdonnell - N6ML wrote:
> Depends how big your ears are, I suppose... but for me, the CM500 is
> more comfortable - the SB45 opening is quite a bit smaller, and
> pinches my ears a bit. I also like the mesh band (CM500) better than
> the squishy one (SB45)... but I'm not bald... yet....

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Don Wilhelm

Re: K3: CM500 vs. SB40

In reply to this post by Edward R Cole

Ed,

I have hearing aids, and find I cannot use the CM500 without removing
the aids - they cause howls.
My hearing aids are over the ear type as yours are.
Fortunately, my low frequency hearing is about normal, so I can work
without the hearing aids - at least for ham radio purposes.

See if you can borrow one before buying. For normal headphones, I have
a couple Sony's that I can use with the aids. Try before you buy for
best evaluation - everyone is a bit different.

You may be able to push the ear cups up a bit and toward the rear so the
mics in your aids are not blocked from the headphone diaphram.

73,
Don W3FPR

On 3/21/2018 12:56 AM, Edward R Cole wrote:
> I have a related question. Considering the CM500 (or similar) for use
> with my KX3 in outdoor conditions (windy beach or windy hilltop).
>
> Also I wear over the ear hearing aids so need a headset that has a muff
> the surrounds the ear. A headset sitting on my ear puts sound into the
> ear; hearing aid mic is behind my ear. Comfort is also important. I
> have a pair of stereo headsets made by Sony which have nice soft
> cushions that surround my ear (but no boom mic).
>
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Jim Brown-10

Re: K3: CM500 vs. SB40

Another hint for those with moderate hearing loss. Turn off your aids
and set RXEQ for maximum boost on the top bands, maximum cut on the
lower bands. Several years ago, I recommended this to a friend with a
lot of loss, and he uses it successfully to work CW.

73, Jim K9YC

On 3/21/2018 8:15 AM, Don Wilhelm wrote:
> I have hearing aids, and find I cannot use the CM500 without removing
> the aids - they cause howls.
> My hearing aids are over the ear type as yours are.
> Fortunately, my low frequency hearing is about normal, so I can work
> without the hearing aids - at least for ham radio purposes.

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Hank Garretson

Re: K3: CM500 vs. SB40

On Wed, Mar 21, 2018 at 9:31 AM, Jim Brown <[hidden email]>
wrote:

> Another hint for those with moderate hearing loss. Turn off your aids and
> set RXEQ for maximum boost on the top bands, maximum cut on the lower
> bands. Several years ago, I recommended this to a friend with a lot of
> loss, and he uses it successfully to work CW.
>
> 73, Jim K9YC
>
> On 3/21/2018 8:15 AM, Don Wilhelm wrote:
>
>> I have hearing aids, and find I cannot use the CM500 without removing the
>> aids - they cause howls.
>> My hearing aids are over the ear type as yours are.
>> Fortunately, my low frequency hearing is about normal, so I can work
>> without the hearing aids - at least for ham radio purposes.
>>
>
>
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Edward R Cole

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

Thanks to for the many replies.

Walter offers an interesting option of the ModMic.
Model-4 is cheaper with single cord and no mute switch (not needed in
PTT ham radio).
Model-5 has switchable mic elements (not sure if that would be useful)

which is likely to work best with wind-blast noise? My application
is outside standing on either a beach or mountain top doing microwave
ham radio (SSB primarily).

I have a ten-year old Bose QC30 headset that might work well with the
boom. It fits over my hearing aids OK. Usually I remove hearing
aids in an airplane and wear the Bose (combined >60 dBa isolation).

I wonder how well the boom attaches (and comes off)? I would prefer
not to deal with boom mic when traveling on airplanes.

Also this is for use with KX3 (does it provide mic bias?)

Not wearing my hearing aids is fine for digital modes (I see the
signal vs hear it), or when sleeping (nice and quiet). But raising
volume does not work for me. I have to use closed-captioning when
watching TV. My hearing loss is in speech recognition. Sort of like
attacking your speaker with a knife and then wrapping it in several
layers of towels. All you hear is "mmmf wooot swaan jstouble rattle
rattle. All consonant sound is lost: the *ain in **ain *alls *ainly
on the *lain. Clue: **ain = Spain.

My hearing aids have the telecoil but I never use it (way too noisy
and distorted). For regular telephones I use the speaker-phone and
for my iphone5 I have blue-tooth connection to my hearing aids. I
have a blue tooth audio appliance that permits plugging into an audio
source to send to my hearing aids via blue tooth, but it "eats"
batteries in a couple hours use so I have not used it for ham
radio. Of course its simplex (no mic). My hearing aids have a
remote with mic but does not work well in wind (makes very hollow
sound for telephone user).

Guess more to think about.

73, Ed

From: Walter Underwood <[hidden email]>
To: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] K3: CM500 vs. SB40
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

The SB45 does appear to go around your ear.

Another option is to add a boom mic to the headphones you like. The
ModMic attaches to headphones.

https://antlionaudio.com/

Interesting, one of their sales regions is ?Amateur Radio?. Here is a
ModMic vendor that includes some mic adaptors.

http://pileupdx.com/product-category/brands/antlion-modmic/

They are also available at B&H and Amazon.

https://www.bhphotovideo.com/c/buy/Shop-by-Brand-Antlion-Audio/ci/4/phd/3704379912/N/4294255798
https://www.amazon.com/l/11391726011

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
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Jim Brown-10

Re: K3: CM500 vs. SB40

On 3/21/2018 1:08 PM, Edward R Cole wrote:
> which is likely to work best with wind-blast noise?

The ModMic-4 has ONLY a cardioid mic, so will be BAD for wind-blast
breath-pops, handling noise, and bass boost. The ModMic-5 has both omni
and cardioid, with a switch to select between them.

I've never seen one of these -- I'm going only by the description on the
webpage.

73, Jim K9YC

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Edward R Cole

Re: K3: CM500 vs. SB40

In reply to this post by N2TK

More thinking.

I use a pair of Sony MDR-V600 stereo headset in the ham shack (only)
so attaching ModMic permanently is better idea. I know this headset
fits over my hearing aids nicely. I still might also get a CM-500
for comparison. If it works better than the ModMic I'm out very
little cash and if ModMic is better then I can sell the CM-500 here
i=on the reflector (at a slight discount and fee shipping). Always
someone looking for a boom-mic headset for their Elecraft radio.

73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
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