RE: [Elecraft] Heil Handi Mic

2006-12-20 Thread Solosko, Robert B (Bob)
Hello All,

There seems to be differing opinions about whether the Heil HM-4
and HM-5 provide enough output to properly drive the K2. Looking through
the HRO catalog, I found that Heil now has several electret mikes
(HM-iC, iCM, etc.) which they say gives higher output, but they also say
these work only for ICOM radios... Does anyone have experience with
these mikes? Do they solve the low drive problem for the K2?... And why
are they only for ICOM radios? And one final question: are they likely
to work better than the mike that I'm using that I put together using a
$3 Radio Shack electret replacement element (plenty of drive, but
mediocre audio reports)?

Thanks.

Bob W1SRB

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ron D'Eau Claire
Sent: Monday, December 04, 2006 6:54 PM
To: Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Heil Handi Mic

Mike AI4NS wrote:

 I am using the Heil HM-5, and the audio is just fine according to
reports.
I didn't have to do anything special. I set SSb A menu to 2, and SSbB
menu to 3-1, And it works well for my voice.
Just another option.

-

Excellent point Mike! The SSb A menu will switch in about 10 dB of
attenuation if it's set to 1! That's useful when an external mic preamp
to over-driving the K2 but will keep many mics from properly driving the
rig when connected without a preamp. 

Even so, I've noticed that several mics won't drive the K2 properly on
10 meters (where the TX gain is lowest) especially if I use any
compression.
That seems to be the experience of a great many operators. I use an
electret element that has an output of about -64 dB. It works FB once I
changed R14 to 5.6K. 

I considered an external preamp, but it seemed to me more efficient to
reduce the unnecessary loss at the mic input rather than add external
active components to make up for it.

Ron AC7AC  


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RE: [Elecraft] Heil Handi Mic

2006-12-20 Thread Don Wilhelm
Bob,

Unlike other radios (Icom, Kenwood, Yaesu, etc) that have their own method
of wiring the mic jack and make it inconenient to impossible for the user to
change it, the K2 has a microphone configuration header so you can rearrange
the mic jack wiring to suit any 8 pin microphone configuration.  The
information for the wiring required is in the KSB2 manual.

Yes, an Icom mic can be used on the K2 - connect the microphone
configuration header for the Icom wiring and in the case of the the electret
type mic elements, add a resistor from the AF mic pin to +5 volts.  Most
mics suggest a 10k resistor, but usually the other end of the resistor is
connected to an 8 volt supply - the K2 supplies only 5 volts and a 5.6k
resistor is more appropriate.  In the case of Icom wiring, the resistor
connects between pins 1 and 2 and the mic header has a jumper from the 5V
pin to pin 2.

73,
Don W3FPR

 -Original Message-

   There seems to be differing opinions about whether the Heil HM-4
 and HM-5 provide enough output to properly drive the K2. Looking through
 the HRO catalog, I found that Heil now has several electret mikes
 (HM-iC, iCM, etc.) which they say gives higher output, but they also say
 these work only for ICOM radios... Does anyone have experience with
 these mikes? Do they solve the low drive problem for the K2?... And why
 are they only for ICOM radios? And one final question: are they likely
 to work better than the mike that I'm using that I put together using a
 $3 Radio Shack electret replacement element (plenty of drive, but
 mediocre audio reports)?

   Thanks.

 Bob W1SRB

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
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1:17 PM

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Re: [Elecraft] Heil Handi Mic

2006-12-20 Thread Eric Swartz - WA6HHQ, Elecraft

Hi Bob,

The Heil iC elements work perfectly with the K2. They use the same 
element that we used in the MH2.


(As a side note: The Heil HC4 and HC5 elements put out about 8 dB less 
than the industry standard used by almost all other ham radio 
manufacturers, hence the low gain reports in some instances.)


If you want to use the standard Elecraft 8 pin mic connector set up, 
which allows you to jumper straight across on our mic configuration 
header, you will want to request the Kenwood style cable from them.


I'll give Heil a call and request that they re-title the ic microphones 
as compatible with Elecraft too :-)


73, Eric   WA6HHQ
---

Solosko, Robert B (Bob) wrote:

I found that Heil now has several electret mikes
(HM-iC, iCM, etc.) which they say gives higher output, but they also say
these work only for ICOM radios... Does anyone have experience with
these mikes?  And why are they only for ICOM radios?
Bob W1SRB


  

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RE: [Elecraft] Heil Handi Mic

2006-12-20 Thread Steve Banks
Bob, and the List:

I bought, and still use, a Heil MH2 electret mic when it was offered for
sale through Elecraft; then it was called the Heil MH2.  That was several
years ago as I recall. 

The MH2 works FB with plenty of output and good-quality audio according the
reports I get on the air.  I'm mostly a CW user, but the little handheld MH2
seems fine for my needs, and the K2 seems happy with its output level.  My
relevant K2 MENU entries are : SSbA 1, and SSbC 1-1.  The MH2 is physically
connected to my Rigblaster interface, which then connects to the K2 8-pin
Mic connector.

The only reason I can see that Heil would say the HM-4 and HM-5 are only for
Icom rigs might be that their mic connector pins might be wired differently
than the K2 expects to see.  Certainly you ought to be able to play with
your RS electret replacement element without hazard to your K2.

Keep us posted, es GL.

73

K0PQ
Steve Banks


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Solosko, Robert B
(Bob)
Sent: Wednesday, December 20, 2006 7:19 AM
To: Ron D'Eau Claire; Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Heil Handi Mic

Hello All,

There seems to be differing opinions about whether the Heil HM-4 and
HM-5 provide enough output to properly drive the K2. Looking through the HRO
catalog, I found that Heil now has several electret mikes (HM-iC, iCM, etc.)
which they say gives higher output, but they also say these work only for
ICOM radios... Does anyone have experience with these mikes? Do they solve
the low drive problem for the K2?... And why are they only for ICOM
radios? And one final question: are they likely to work better than the
mike that I'm using that I put together using a
$3 Radio Shack electret replacement element (plenty of drive, but mediocre
audio reports)?

Thanks.

Bob W1SRB

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ron D'Eau Claire
Sent: Monday, December 04, 2006 6:54 PM
To: Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Heil Handi Mic

Mike AI4NS wrote:

 I am using the Heil HM-5, and the audio is just fine according to reports.
I didn't have to do anything special. I set SSb A menu to 2, and SSbB menu
to 3-1, And it works well for my voice.
Just another option.

-

Excellent point Mike! The SSb A menu will switch in about 10 dB of
attenuation if it's set to 1! That's useful when an external mic preamp to
over-driving the K2 but will keep many mics from properly driving the rig
when connected without a preamp. 

Even so, I've noticed that several mics won't drive the K2 properly on 10
meters (where the TX gain is lowest) especially if I use any compression.
That seems to be the experience of a great many operators. I use an electret
element that has an output of about -64 dB. It works FB once I changed R14
to 5.6K. 

I considered an external preamp, but it seemed to me more efficient to
reduce the unnecessary loss at the mic input rather than add external active
components to make up for it.

Ron AC7AC  


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Re: [Elecraft] Heil Handi Mic

2006-12-20 Thread Bill W5WVO

Hi Eric --

Since I have a Heil ProSet with the HC5 element, and I get outstanding 
reports with it on Kenwood and Yaesu rigs -- my question is, if I connect it 
to a K2, will the 8 dB difference in output level cause any problems, or is 
there enough residual mic gain in the K2 to make up for it?


Bill W5WVO


Eric Swartz - WA6HHQ, Elecraft wrote:

Hi Bob,

The Heil iC elements work perfectly with the K2. They use the same
element that we used in the MH2.

(As a side note: The Heil HC4 and HC5 elements put out about 8 dB less
than the industry standard used by almost all other ham radio
manufacturers, hence the low gain reports in some instances.)

If you want to use the standard Elecraft 8 pin mic connector set up,
which allows you to jumper straight across on our mic configuration
header, you will want to request the Kenwood style cable from them.

I'll give Heil a call and request that they re-title the ic
microphones as compatible with Elecraft too :-)

73, Eric   WA6HHQ
---

Solosko, Robert B (Bob) wrote:

I found that Heil now has several electret mikes
(HM-iC, iCM, etc.) which they say gives higher output, but they also
say these work only for ICOM radios... Does anyone have experience
with these mikes?  And why are they only for ICOM radios?
Bob W1SRB




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RE: [Elecraft] Heil Handi Mic

2006-12-05 Thread Gene Langendorff
While at Pacificon this fall I purchased a Heil Handi-Mic for my K2 #0261.
I've read this list for a long time now and know about the K2's need for a
mic with higher-than-normal output.  Researching the Handi-Mic on-line I
expected the model HM-iC (for Icom) would be the right choice.  So before
making the purchase I went to the Elecraft booth and asked THE MAN, Eric
Schwartz, and he said that's the one to get.  Well, I haven't found out for
sure yet because I still need to build my KSB2 but I have no doubt that I
got the right info from the right man.  Don's response (below) seems to
agree.

I also purchased the Heil CH-1K (Kenwood) cable to go with it, the plug
matches the K2 and Eric said I can then use the default setting on the KSB2
header.  It should be a nice setup.

73,
Gene K6TTM

 -Original Message-
 From: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm
 Sent: Monday, December 04, 2006 10:57 AM
 To: Frank Van Cleef W1WCG; elecraft@mailman.qth.net
 Subject: RE: [Elecraft] Heil Handi Mic
 
 
 Frank,
 
 Unfortunately the Heil HC-4 and HC-5 elements have lower 
 output than typical
 mics.  There is one in the Handi-Mic set that should work 
 well with the K2 -
 and that is the one for the Icom (Heil number HM-iC)  perhaps 
 you could
 arrange an exchange.
 
 In general the Icom mics use an electret element with high 
 output level -
 the audio input needs of the K2 and the Icom are similar.
 
 If you do wish to retain the HC-5 element, then your best 
 choice is to use a
 pre-amp.  There are work-arounds such as changing the value 
 of KSB2 R14, but
 IMHO, the best all-around solution is to use a pre-amp and 
 set the pre-amp
 gain to provide the output needed by the K2.  If I recall 
 correctly, the
 proper output level is -40 dBm.
 
 73,
 Don W3FPR
 
  -Original Message-
 
  I recently acquired a Heil Handi-Mic with the HC-5 element,
  intending to use
  it with a new K2 radio (#5510).  I used straight-across 
 wiring for the
  configuration connector in the front panel since the Handi-Mic is
  equipped
  with a cable wired for Kenwood mikes.  No resistor from pin 1 to
  pin 6 since
  the element is dynamic.  The mike does work, but the output seems
  low -- the
  ALC indication barely lights the top bar, and the RF output
  barely shows on
  the louder peaks.  A MH-2 mike shows a little more output, though
  not that
  much more.  The over-all feeling is that the Handi-Mic has a
  relatively low
  output level and may need a preamp to work properly with the K2.
 
 --
 No virus found in this outgoing message.
 Checked by AVG Free Edition.
 Version: 7.5.430 / Virus Database: 268.15.6/567 - Release 
 Date: 12/4/2006
 7:18 AM
 
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Re: [Elecraft] Heil Handi Mic

2006-12-05 Thread Eric Swartz - WA6HHQ, Elecraft
Sounds like that will work perfectly. :-) Make sure you add the 
microphone bias resistor to the K2 for  this mic.


73, Eric Swartz   WA6HHQ
http://www.elecraft.com

Gene Langendorff wrote:

While at Pacificon this fall I purchased a Heil Handi-Mic for my K2 #0261.
I've read this list for a long time now and know about the K2's need for a
mic with higher-than-normal output.  Researching the Handi-Mic on-line I
expected the model HM-iC (for Icom) would be the right choice.  So before
making the purchase I went to the Elecraft booth and asked THE MAN, Eric
Schwartz, and he said that's the one to get.  Well, I haven't found out for
sure yet because I still need to build my KSB2 but I have no doubt that I
got the right info from the right man.  Don's response (below) seems to
agree.

I also purchased the Heil CH-1K (Kenwood) cable to go with it, the plug
matches the K2 and Eric said I can then use the default setting on the KSB2
header.  It should be a nice setup.

73,
Gene K6TTM

  


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Re: [Elecraft] Heil Handi Mic

2006-12-04 Thread Geoffrey Mackenzie-Kennedy

Van,

The Heil HC-5 and HC-4 mic elements do produce less output than many other 
types of mic element, and you will find a number of Posts to the List 
discussing this issue. Unless these mic elements are quite close to one's 
mouth it does seem that a preamp is required with the K2.  I use a Heil 
Proset Plus headset which has a boom assembly containing a HC-5 and a HC-4 
which means that the mic is about 2 or 3 inches from my mouth, and I do not 
need a preamp to drive my K2/100 to full specified output, in fact on 40m I 
have to move the mic a little to avoid the ALC becoming too active. FWIW my 
wife says that I have a 'quiet' voice.


73,
Geoff
GM4ESD


Frank Van Cleef W1WCG [EMAIL PROTECTED] wrote:


Greetings, all

I recently acquired a Heil Handi-Mic with the HC-5 element, intending to use
it with a new K2 radio (#5510).  I used straight-across wiring for the
configuration connector in the front panel since the Handi-Mic is equipped
with a cable wired for Kenwood mikes.  No resistor from pin 1 to pin 6 since
the element is dynamic.  The mike does work, but the output seems low -- the
ALC indication barely lights the top bar, and the RF output barely shows on
the louder peaks.  A MH-2 mike shows a little more output, though not that
much more.  The over-all feeling is that the Handi-Mic has a relatively low
output level and may need a preamp to work properly with the K2.  The mike
works about the same with either K2 here.  I've noted the diagram for a mike
preamp for the K2, but before I build up something like that, I'm just
wondering if anybody else has tried the Handi-Mic, and what any experience
has been with respect to driving the K2 with that mike.  Comments, anyone? ?





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RE: [Elecraft] Heil Handi Mic

2006-12-04 Thread Ron D'Eau Claire
I don't have personal experience with the Heil mic, but you are describing a
K2 making full power output if I understand your comments correctly.

When the first (right hand) ALC bar just flickers, that means the mic is
providing *more* audio than the K2 needs for full RF output and the ALC is
turning down the overall transmit gain. So, if you have the POWER set for a
K2 to produce 10 watts or a K2/100 to produce 100 watts, and one ALC bar
flickers, more audio from the mic will do no good at all. 

It's important to check that at full RF power. As you turn down the power
you'll see more and more ALC bars light as the level control reduces the
output to match the POWER control setting. (The K2 should not be run above
10 watts on SSB to avoid unnecessary distortion, although running the power
wide open on CW is FB).

You also need to have whatever maximum level of compression you want to use
switched On and do the test on the band where the K2 has the *least*
transmit gain. That's always been 10 meters on all the K2's I've heard about
and seen. 

If you get an ALC bar flickering under those conditions, more mic gain does
nothing for you. If not, then perhaps a preamp will help.

Watching your RF output, the bar associated with the maximum power should
just lightly flicker unless you are using a lot of compression. Human voice
has  a huge average-to-peak amplitude ratio, and the peaks are very brief
and infrequent compared to the rest of the spectrum. The RF bargraph display
is a peak reading display so it fairly accurately indicates the very brief
and infrequent voice peaks.

One very simple change in the K2 that makes a large difference for mics with
marginal output is to change resistor R14 on the SSB module board from the
original value of 1k ohms to something between 5.6k and 10k. That resistor
is across the mic input. Increasing its value raises the audio level
presented to the speech compressor. 

Ron AC7AC


-Original Message-
Greetings, all

I recently acquired a Heil Handi-Mic with the HC-5 element, intending to use

it with a new K2 radio (#5510).  I used straight-across wiring for the 
configuration connector in the front panel since the Handi-Mic is equipped 
with a cable wired for Kenwood mikes.  No resistor from pin 1 to pin 6 since

the element is dynamic.  The mike does work, but the output seems low -- the

ALC indication barely lights the top bar, and the RF output barely shows on 
the louder peaks.  A MH-2 mike shows a little more output, though not that 
much more.  The over-all feeling is that the Handi-Mic has a relatively low 
output level and may need a preamp to work properly with the K2.  The mike 
works about the same with either K2 here.  I've noted the diagram for a mike

preamp for the K2, but before I build up something like that, I'm just 
wondering if anybody else has tried the Handi-Mic, and what any experience 
has been with respect to driving the K2 with that mike.  Comments, anyone? ?

?

TIA,

Van W1WCG
K2 #2634, 5510

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RE: [Elecraft] Heil Handi Mic

2006-12-04 Thread Don Wilhelm
Frank,

Unfortunately the Heil HC-4 and HC-5 elements have lower output than typical
mics.  There is one in the Handi-Mic set that should work well with the K2 -
and that is the one for the Icom (Heil number HM-iC)  perhaps you could
arrange an exchange.

In general the Icom mics use an electret element with high output level -
the audio input needs of the K2 and the Icom are similar.

If you do wish to retain the HC-5 element, then your best choice is to use a
pre-amp.  There are work-arounds such as changing the value of KSB2 R14, but
IMHO, the best all-around solution is to use a pre-amp and set the pre-amp
gain to provide the output needed by the K2.  If I recall correctly, the
proper output level is -40 dBm.

73,
Don W3FPR

 -Original Message-

 I recently acquired a Heil Handi-Mic with the HC-5 element,
 intending to use
 it with a new K2 radio (#5510).  I used straight-across wiring for the
 configuration connector in the front panel since the Handi-Mic is
 equipped
 with a cable wired for Kenwood mikes.  No resistor from pin 1 to
 pin 6 since
 the element is dynamic.  The mike does work, but the output seems
 low -- the
 ALC indication barely lights the top bar, and the RF output
 barely shows on
 the louder peaks.  A MH-2 mike shows a little more output, though
 not that
 much more.  The over-all feeling is that the Handi-Mic has a
 relatively low
 output level and may need a preamp to work properly with the K2.

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.6/567 - Release Date: 12/4/2006
7:18 AM

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RE: [Elecraft] Heil Handi Mic

2006-12-04 Thread Ron D'Eau Claire
Mike AI4NS wrote:

 I am using the Heil HM-5, and the audio is just fine according to reports.
I didn't have to do anything special. I set SSb A menu to 2, and SSbB menu
to 3-1, And it works well for my voice.
Just another option.

-

Excellent point Mike! The SSb A menu will switch in about 10 dB of
attenuation if it's set to 1! That's useful when an external mic preamp to
over-driving the K2 but will keep many mics from properly driving the rig
when connected without a preamp. 

Even so, I've noticed that several mics won't drive the K2 properly on 10
meters (where the TX gain is lowest) especially if I use any compression.
That seems to be the experience of a great many operators. I use an electret
element that has an output of about -64 dB. It works FB once I changed R14
to 5.6K. 

I considered an external preamp, but it seemed to me more efficient to
reduce the unnecessary loss at the mic input rather than add external active
components to make up for it.

Ron AC7AC  


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RE: [Elecraft] Heil Handi Mic

2006-12-04 Thread Mike Short
 I am using the Heil HM-5, and the audio is just fine according to reports.
I didn't have to do anything special. I set SSb A menu to 2, and SSbB menu
to 3-1, 
And it works well for my voice.
Just another option.

Mike
AI4NS

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm
Sent: Monday, December 04, 2006 12:57 PM
To: Frank Van Cleef W1WCG; elecraft@mailman.qth.net
Subject: RE: [Elecraft] Heil Handi Mic

Frank,

Unfortunately the Heil HC-4 and HC-5 elements have lower output than typical
mics.  There is one in the Handi-Mic set that should work well with the K2 -
and that is the one for the Icom (Heil number HM-iC)  perhaps you could
arrange an exchange.

In general the Icom mics use an electret element with high output level -
the audio input needs of the K2 and the Icom are similar.

If you do wish to retain the HC-5 element, then your best choice is to use a
pre-amp.  There are work-arounds such as changing the value of KSB2 R14, but
IMHO, the best all-around solution is to use a pre-amp and set the pre-amp
gain to provide the output needed by the K2.  If I recall correctly, the
proper output level is -40 dBm.

73,
Don W3FPR

 -Original Message-

 I recently acquired a Heil Handi-Mic with the HC-5 element,
 intending to use
 it with a new K2 radio (#5510).  I used straight-across wiring for the
 configuration connector in the front panel since the Handi-Mic is
 equipped
 with a cable wired for Kenwood mikes.  No resistor from pin 1 to
 pin 6 since
 the element is dynamic.  The mike does work, but the output seems
 low -- the
 ALC indication barely lights the top bar, and the RF output
 barely shows on
 the louder peaks.  A MH-2 mike shows a little more output, though
 not that
 much more.  The over-all feeling is that the Handi-Mic has a
 relatively low
 output level and may need a preamp to work properly with the K2.

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RE: [Elecraft] Heil Handi Mic Configuration Question

2006-02-20 Thread Ed Findley
I am using the same mike with the kenwood cable on my K-2.  Since it is
basically the same Heil mike that was made for the K2 but is no longer
available- I used the settings (jumpers) as described for the Elecraft MH-2
in the manual for the KSB2.  To include the 5.6 K resistor from pin 1 to pin
6.  Works well.  Do not use the Kenwood jumper settings.

Ed Findley N5LDY
K2 #1073 FP #1233
SKCC #868


I am finishing up K2 #5113 and have run into a snag configuring the
microphone on the K2SB2.  I am using a Heil Handi Mic HM-IC.  

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RE: [Elecraft] Heil Handi Mic Configuration Question

2006-02-19 Thread Don Wilhelm
Jonathan,

At best we can but guess that your mic (or the K2 mic configuration header)
is not connected as you expect - did you add the resistor on the back of the
mic jack or the mic configuration header to support the use of the Electret
element (since this is an ICOM type mic based on the -IC suffix, I assume
the element is the electret type, but again I could be wrong on that).

Bottom line - trust no one until you can substantiate that what you have in
your hands is connected as expected.  It may take the steps of disassembling
the mic and checking continuity from the element and PTT switch to the pins
on the mic plug to really know the truth of that matter.  Until that is
known, everything is a 'guessing game'.  Heil has a wide variety of mic
configurations and some very different wirings appear under the same mic
type number, so you have to know what you have in order to connect it
properly.

Once we know the element type (dynamic or electret) and know which signals
appear at what pins on the mic plug, we can tell you how to configure your
mic configuration header.

One other thing - the carrier that you experience may be the result of
failure to properly set the carrier balance pot on the KSB2 board.  Have you
done all the KSB2 alignment yet?

73,
Don W3FPR

 -Original Message-

 I am finishing up K2 #5113 and have run into a snag configuring the
 microphone on the K2SB2.  I am using a Heil Handi Mic HM-IC.  Bob Heil
 told me to get this mic as he said it would optimize my 706 MKIIG and
 the K2.  I'm using the Kenwood 8 pin cable for the K2, again per Heil's
 recommendation.  I've set up the P1 on the K2SB2 for the Kenwood mics
 using block jumpers.   Setting the K2 power for 2 watts, when I push the
 PTT, I'm getting a carrier at over 10 watts out.  No modulation when I
 speak, just a constant key down carrier at a very high power output.
 I'm using a very reliable and accurate Waters analog watt meter.  Any
 ideas on what I've done wrong and what I need to do to fix this?

 Jonathan Gottlieb
 WA3WDK
 K2/100 # 4853
 K2 #5113







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