[Elecraft] electronic product standards

2008-02-13 Thread Charles Harpole

No, Ian, the mess of conflicting plug standards has not always been the case.  
There was a time when a 4 pin mic plug had pin one as mic and 2 as ptt and 3 as 
gnd.  Johnson, Heath, and all the other xmitter makers AGREED.
There was a time ... still somewhat with us... when the 6 pin Molex was the 
power connector of choice and AMAZINGLY K, I, Y, and others HAD THE SAME PIN 
OUT on these.  The telephone style plug now arriving on so many rigs answers 
the manufacturers' dream because they are so difficult to self-install that the 
customer is nearly forced to purchase specific mics ... THEIR LINE.
 
Too,There was a time when a ham would have sneered at a DIN plug, that 
nightmare--both to solder to and to cope with differences.So on and on.
 
The use of different pin-outs is cause for consumer anger because the choice is 
not based on good engineering practice but on the desire to sell their own 
differentiated product to those who have also purchased their line of products. 
 Because most of the K, I, and Y crop of mics are so equally bad, the only way 
to make their product different is not via quality but via a unique pin-out 
plug.  Shameful business practice that only hurts the consumer.  The reason Bob 
Heil's mics sell is that THEY ARE BETTER, and he has made an easy line of 
adapters, too.  
 
Elecraft made a good showing by trying to copy the Kenwood standard even if 
there is a problem with SOME CASES with pins 5 and 6 reversed.  That I have the 
time to explain the obvious shows that I am retired, and  fill in the blank.
73,Charles [EMAIL PROTECTED]  On Wed, 13 Feb 2008 08:23:07 +, Ian J Maude 
wrote:  I cannot keep quiet any longer! :)   What is all the noise about 
microphone compatibility? We are  radio  amateurs, it should be simple 
enough to wire a microphone for a  rig.  Just look at the pin outs on the 
mic and the rig and wire  accordingly.  The circuitry is not exactly 
complex!  If we buy *any* radio we pretty much know that the mic wiring is  
going  to be different. 4-way, 8-way, RJ45 connectors, the list goes  on. 
What  ever the manufacturer decides is the right way for them, this  has 
always  been the case.  It really is quite simple. Is your microphone a 
dynamic type?  If so,  wire it for Kenwood and it will work. Does it need a 
voltage?  Look at  the diagrams as I mentioned before. Good grief! Elecraft 
are  building  the rigs for us now and we are still moaning! ;)   73 
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Re: [Elecraft] electronic product standards

2008-02-13 Thread Bill Coleman N2BC

Mic 'standard' - never happen - at least I hope it never happens.

They started out with one pin for audio and could end up with one pin for 
everything as more and more 'brains' are moved into the microphone and the 
connection to the radio turns into a one-wire serial link.  This could give 
us a compatible connecter with completely incompatible 'data streams'.


Break out your wire cutters and soldering iron.  Visit 
http://www.qsl.net/g4wpw/date.html to view the myriad of pin-outs for and 
within each of the manufacturer's microphones and radios.


If we need a standard, I propose that it be based on a 14-pin JONES plug, 
that would look pretty nifty on the front of the future K4.


OK, /sarcasm off  I'll go shovel the driveway.

73 Bill N2BC


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Re: [Elecraft] electronic product standards

2008-02-13 Thread N2EY
In a message dated 2/13/08 5:45:39 AM Eastern Standard Time, 
[EMAIL PROTECTED] writes:


 There was a time when a 4 pin mic plug had pin one as mic and 2 as ptt and 
 3 as gnd.  Johnson, Heath, and all the other xmitter makers AGREED.
 

When was that?

I've had Johnson transmitters that used the Ampenol MC1 type mike connector, 
and Heaths that used the odd 2 pin connector that is hard to find today. 
Others used the 1/4 stereo plug, except those that used the version which is 
0.206 (PJ-068?)

Of course it was common in those days to modify the rig to use the connector 
you liked, and there was lots of room in the rig to do it. But the original 
equipment connectors were all over the map.

The four-pin connector was a Japanese standard for a while. But then came 
mikes that needed voltage at the mike for the element, mikes that had DTMF pads 
on the back, mikes with built in preamps, mikes with up/down frequency 
switches, etc. 

One more reason to use CW!

73 de Jim, N2EY 


**
The year's hottest artists on the red carpet at 
the Grammy Awards. Go to AOL Music.
  
(http://music.aol.com/grammys?NCID=aolcmp0030002565)
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Re: [Elecraft] electronic product standards

2008-02-13 Thread Bill NY9H

holy cow,,,

a $1.59 electret mic element from radio shack works GREAT with
all my icoms and my K2s and K3.

And where do the kenwood  Icom and Yaesu Mics  (  bob's ) come from
from companies that actually make microphones like Primo, 
panasonic  Foster in JA land.   In EU Sennheiser... 
AKGetc.just look in  mouser  digikey.


Ham radio is too small a market to make mic elementsHam companies 
can assemble them;  design them  , and  MARKET THEM TO HAMS  YES...


Even Elecraft acknowledges this reality.  they get them made, the 
way they want...and are entitled to mark them up so they can design 
 advertise, maintain inventory and MAKE HAMS HAPPY who want a 
matching...esthetically pleasing solution. O Yes  THEY HAVE THE 
MATCHING CONNECTOR... which is called a foster connector ( the mic 
company that supplies all those mics).


back to cw


K3 ASSEMBLY PIX @

http://picasaweb.google.com/Bill.SteffeySr/K3

NY9H STATION PIX @
http://albums.photo.epson.com/j/ViewPhoto?u=1771119a=13683578p=75658236f=0

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RE: [Elecraft] electronic product standards

2008-02-13 Thread Ron D'Eau Claire
Bill, NY9H wrote:


a $1.59 electret mic element from radio shack works GREAT with all my icoms
and my K2s and K3.

---

Yes, those Radio Shack electret elements are excellent. I have one mounted
in an scavenged hand-held mic housing that works FB. The element has a very
wide frequency response, since it's designed for general purpose audio work,
but that's not a problem with modern rigs with filters such as the K2 or K3.


Back in the old days of vacuum tube A.M. rigs, the modulators tended to
broad as a barn, passing all audio put into them with only minimal shaping
provided by the values used for coupling and bypass capacitors in the speech
amplifier stages. 

There were some microphones produced for the communications market back
then such as the famous Astatic D-104 which had a microphone element with a
shaped response showing a distinct hump around 3 kHz, rolling off slowly at
lower frequencies and somewhat faster at higher frequencies. That hump
helped with articulation by emphasizing the mid-range speech frequencies.
Astatic even published a frequency response chart showing exactly what it
looked like, but back in those days most microphone element manufacturers
provided frequency response charts with their various mics.

I don't know if anyone is doing that today for mainstream communications
microphones. Even the high end Ham mics only offer general and
uninformative comments about shaping and clarity that say much and
convey little. Interestingly, one of the big exceptions is the inexpensive
little Radio Shack electret element. It comes with a frequency response
chart showing a very flat response across the audio spectrum.

But all is not lost: the SSB filters in modern rigs prevent excessive audio
band passes and the K3 goes farther yet, offering a transmit equalizer with
which one can shape the audio response to suit one's voice. When doing that,
it's good to start with a wide range flat microphone element response like
the Radio Shack electret. 

I rather expect, although they don't say as far as I can see, the high end
Ham mic manufacturers are using elements with a flat response and perhaps
doing some sort of shaping in design of the enclosure. If so, then choosing
a Ham mic today is really a matter of cosmetics: choosing what looks nice.


Another list member here asked what, exactly, is the best response to
provide the best intelligibility under all conditions and how can that be
seen unambiguously on a display like spectrogram? 

That's a good question. Sometimes we get too many choices. I'm happy to
record my rig using a wide-band auxiliary receiver and adjust the equalizer
for a sound that I'd like to hear from the other end in a rag chew. But then
I don't spend long hours yelling into the mic in a contest or trying to
shout down the others in a DX pileup ;-)

Ron AC7AC   


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