[Elecraft] Heil Proset Plus and K3
John AK4Z
Is anyone using a Heil Pro Set Plus IC with a HC-4 and iC electret element
with their K3? How did it play? I understand that a Heil Kenwood adaptor
(red) is needed to interface with the 8-pin microphone connector on the
front of the K3. Is rewiring of the 8-pin Kenwood connector required?
Advice/comments regarding setup appreciated.
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David Wilburn
the back of the rig, and run from there.
Dave Wilburn
K4DGW
K2/100 - S/N 5982
K3/100 - S/N 766
"For those who fought for it, freedom has a flavor the protected will
never know."
John AK4Z wrote:
> Is anyone using a Heil Pro Set Plus IC with a HC-4 and iC electret element
> with their K3? How did it play? I understand that a Heil Kenwood adaptor
> (red) is needed to interface with the 8-pin microphone connector on the
> front of the K3. Is rewiring of the 8-pin Kenwood connector required?
> Advice/comments regarding setup appreciated.
Tom Childers, N5GE
>I just plug mine (the Proset from Elecraft, with two 1/8 plugs) into
>the back of the rig, and run from there.
>
>
>
>K4DGW
>K2/100 - S/N 5982
>K3/100 - S/N 766
>
>"For those who fought for it, freedom has a flavor the protected will
>never know."
>
I use mine that way too. It works great.
Tom, N5GE - SWOT 3537 - Grid EM12jq
"Those who would give up
Essential Liberty to
purchase a little Temporary
Safety deserve neither
Liberty nor Safety"
An excerpt from a letter
written in 1755 from the
Assembly to the Governor
of Pennsylvania.
Support the entire Constitution, not
just the parts you like.
http://www.n5ge.com
http://www.eQSL.cc/Member.cfm?N5GE
Craig D. Smith
Proset Plus. I was thinking of getting the normal (dynamic) version and
plugging it into the connectors on the back. So humor this basic question
from a CW guy. Is there any advantage to the electret version assuming I
have no other rig that needs it? The dynamic version is less expensive.
73
... Craig AC0DS
Bruce McLaughlin
Inside the instructions said it was for the K2 but I think that was printed
before the K3 was around. It has a short Kenwood (red) 8 pin adaptor. It
works fine plugged into the front mike connector with the mike bias turned
on. Currently the bias is set to high but I understand it will also work
with the bias set to low.
Bruce - W8FU
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7:25 PM
Vic K2VCO
> This thread originally was focused on the IC (electret) version of the
> Proset Plus. I was thinking of getting the normal (dynamic) version and
> plugging it into the connectors on the back. So humor this basic question
> from a CW guy. Is there any advantage to the electret version assuming I
> have no other rig that needs it? The dynamic version is less expensive.
Well, I haven't tried the electret version but I have the dynamic Proset
5 and it works fine (at least, for the few SSB QSOs I felt obligated to
make as a beta tester).
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
n4lq
the headset is wired for ICOM then with a Kenwood adapter to an Elecraft
mic. jack with the bias on the wrong pin. (8) instead of (5) as etc.
I'm glad it works but not sure why.
Steve Ellington
N4...@insightbb.com
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Ken K3IU
The High (H) and Low (L) refer to the gain in the circuit, not the bias
level. Tap the display button when you are in the MAIN: MIC SEL mode to
read what the "help file" says.
73,
Ken K3IU
Bruce McLaughlin wrote:
> I am using the Proset marked "IC" which came from Elecraft with my new K3.
> Inside the instructions said it was for the K2 but I think that was printed
> before the K3 was around. It has a short Kenwood (red) 8 pin adaptor. It
> works fine plugged into the front mike connector with the mike bias turned
> on. Currently the bias is set to high but I understand it will also work
> with the bias set to low.
>
> Bruce - W8FU
> Advice/comments regarding setup appreciated.
Don Wilhelm
The subject of electret mic bias has come up before, and your statements
below are incorrect --
Please look at the microphone connector in the manual (page 13), and
interpret the designation for pin 6 literally. It is *not* marked
"bias", it is designated "+8 V (10 ma max)".
"Bias" is what is applied to the microphone element - and that is
accomplished by adding a DC voltage onto the AF line - pin 1. That is
quite different than a raw source of +8V.
The Heil Kenwood adapter has no connection to either pins 5 or 6. The
Heil Kenwood adapter connects the mic element to pin 1, and the K3
applies bias to pin 1 if the menu is set correctly.
73,
Don W3FPR
n4lq wrote:
> Wow. It would be interesting to know how that managed to work. The IC
> means the headset is wired for ICOM then with a Kenwood adapter to an
> Elecraft mic. jack with the bias on the wrong pin. (8) instead of (5)
> as etc.
> I'm glad it works but not sure why.
>
> Steve Ellington
>
Don Wilhelm
The High and Low in the K3 microphone menu refers to the microphone gain
range and has no relationship to the "bias". The bias voltage for the
front panel jack is sourced from +5 volts while the rear panel jack is
sourced from +8 volts. Most electret mics will work with either voltage.
73,
Don W3FPR
Bruce McLaughlin wrote:
> I am using the Proset marked "IC" which came from Elecraft with my new K3.
> Inside the instructions said it was for the K2 but I think that was printed
> before the K3 was around. It has a short Kenwood (red) 8 pin adaptor. It
> works fine plugged into the front mike connector with the mike bias turned
> on. Currently the bias is set to high but I understand it will also work
> with the bias set to low.
>
> Bruce - W8FU
>
>
Bruce McLaughlin
adaptor destined for use on the K2/K3. Maybe they did a wiring switch in
the adaptor to make it compatible. I remember, the "standard" mike wiring
for the K2 is the Kenwood standard, although, other configurations could be
chosen when the mike connector was wired during construction. I remember
wiring my K2/100 for the Kenwood standard and everything worked. I used the
Elecraft supplied Heil hand mike which is an electret.
Heil told me that their dynamic mikes would work fine with the K3 and
Kenwood cable. They also said that it made no difference whether the rig
bias was on or off because they used a resistor to block the unneeded bias
which would also protect the rig. I intend to try my Gold line and PR 40
mikes in the future with the K3 using a Kenwood cable but with no bias just
to be sure! However, electret mikes such as the Proset are another kettle
of fish. All I really know is the red adaptor which came with the Elecraft
supplied Proset works fine with the K3. Perhaps it would be worthwhile to
give Heil a call for a better explanation.
Bruce McLaughlin
FT 1000D. Maybe it would be interesting to try it on the K3 with the bias
turned off just in case. I suspect the gain might be lower but I would be
mainly concerned about whether it might short something that shouldn't be
shorted. I don't recall whether the non-electret Proset came with a
connector schematic or not. Maybe someone else on the forum has already
tried this with the K3. If so and the radio is still working I guess that
would be reassuring.
Bruce - W8FU
-----Original Message-----
From: elecraft...@mailman.qth.net
[mailto:elecraft...@mailman.qth.net] On Behalf Of Vic K2VCO
Sent: Thursday, May 15, 2008 6:47 PM
To: cr...@powersmith.net
Cc: Elec...@mailman.qth.net
Subject: Re: [Elecraft] Heil Proset Plus and K3
Craig D. Smith wrote:
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7:25 PM
Bruce McLaughlin
want to vary the bias but then again, some folks like to be different. I'm
still having a little trouble interpreting some of the menus. I tend to
read them quite literally.
Bruce - W8FU
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7:25 PM
Tom Childers, N5GE
>This only a guess but I wonder if Heil pulled a trick with the short red
>adaptor destined for use on the K2/K3. Maybe they did a wiring switch in
>the adaptor to make it compatible. I remember, the "standard" mike wiring
>for the K2 is the Kenwood standard, although, other configurations could be
>chosen when the mike connector was wired during construction. I remember
>wiring my K2/100 for the Kenwood standard and everything worked. I used the
>Elecraft supplied Heil hand mike which is an electret.
>
>Heil told me that their dynamic mikes would work fine with the K3 and
>Kenwood cable. They also said that it made no difference whether the rig
>bias was on or off because they used a resistor to block the unneeded bias
>which would also protect the rig. I intend to try my Gold line and PR 40
>mikes in the future with the K3 using a Kenwood cable but with no bias just
>to be sure! However, electret mikes such as the Proset are another kettle
>of fish. All I really know is the red adaptor which came with the Elecraft
>supplied Proset works fine with the K3. Perhaps it would be worthwhile to
>give Heil a call for a better explanation.
>
The Red banded mike cords from Heil are for Kenwood rigs. I've used the Pro-Set
Plus! and GoldLine both with KWD and Yaesu rigs. The Yaesu cords are Yellow
banded.
[snip]
Tom, N5GE - SWOT 3537 - Grid EM12jq
"Those who would give up
Essential Liberty to
purchase a little Temporary
Safety deserve neither
Liberty nor Safety"
An excerpt from a letter
written in 1755 from the
Assembly to the Governor
of Pennsylvania.
Support the entire Constitution, not
just the parts you like.
http://www.n5ge.com
http://www.eQSL.cc/Member.cfm?N5GE
_______________________________________________
David Wilburn
anything about the difference, I am reading these too. Not sure how
useful they are.
http://en.wikipedia.org/wiki/Microphone
http://www.pmiaudio.com/forums/archive/index.php/t-27.html
Dave Wilburn
K4DGW
K2/100 - S/N 5982
K3/100 - S/N 766
"For those who fought for it, freedom has a flavor the protected will
never know."
lyle johnson
> with the bias set to low.
Just a minor point. The Mic Gain ".H" and ".L" refer to the overall gain of
the mic amplifier system, not the bias voltage.
.H is used for lower output microphones, like the HC-4 and HC-5 dynamic
elements. The 'L is more useful for high output microphones, such as most
electrets.
Enjoy!
73,
Lyle KK7P
Don Wilhelm
While reading those references, keep in mind that they refer to
pro-audio microphones, which can be a bit different in their connections
and usage than mics used by hams (and consumer devices). For instance,
the pro mics are typically balanced line output, and any 'bias' required
(often called phantom voltage) is applied between *both* balanced line
connectors and the mic cable shield.
The articles are informative, but only apply partly to the microphones
we see in ham radio service.
For instance, the article will say that the basic electret element does
not need any bias voltage - that is true - but the implementation used
in amateur microphones, the element typically used contains an FET
preamplifier as part of the 'element' that you purchase. That
preamplifier does need the bias power. The basic electret element
(without the preamp) has very very low level output and would be
unusable to directly drive a transceiver. The terminology can get
confusing, but is important for understanding the subject.
73,
Don W3FPR
David Wilburn wrote:
> I didn't know the answer either, so I googled it. Since I do not know
> anything about the difference, I am reading these too. Not sure how
> useful they are.
>
> http://en.wikipedia.org/wiki/Microphone
>
> http://www.pmiaudio.com/forums/archive/index.php/t-27.html
>
> Dave Wilburn
>
ON4WIX
Back when I had just assembled my K3 (that was in January, has it been that
long? Time sure flies when you're having fun, hi) I had my Proset Plus
connected to the K3 using a standard Kenwood adapter (the one with a red
marking). Only after a few minutes did I realize that I had forgotten to
turn off the bias voltage. No harm was done however and everything is still
working FB to this day.
Hope this helps
73
Glenn ON4WIX
----- Original Message -----
From: "Tom Childers, N5GE" <n5...@n5ge.com>
To: "Bruce McLaughlin" <bmcl...@bex.net>
Cc: <elec...@mailman.qth.net>
Sent: Friday, May 16, 2008 1:55 AM
Subject: Re: [Elecraft] Heil Proset Plus and K3
http://www.n5ge.com
http://www.eQSL.cc/Member.cfm?N5GE
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16:44