[TenTec] Heil PROSET PLUS IC with HC4 on Omni VII?

[Richards]

Unless I miss my guess, and I have tested A LOT of inexpensive headsets 
over the years... those are $5 Chinese made headsets, much like what 
some of the other vendors sell - it is a rather popular set - but it is 
NOT NEARLY THE HIGHER QUALITY OF THE KOSS OR YAMAHA SETS PREVIOUSLY 
MENTIONED.   I KNOW... I PURCHASED 40 INEXPENSIVE HEADSETS ON EBAY AND 
TESTED THEM,  all with a view to put some of the better ones as back up 
models at the contest shack.   Nothing like having a set go bad during a 
contest...and I am tired of loaning MY backups to the other guys. I am 
the rookie, but I had to supply two backup headsets, a microphone and 
PTT cable, and a foot switch on a 10 rig station... like the old farts 
were PREPARED ?!!??!?

HOWEVER... IN ANY CASE....

YOU MUST HAVE A CORRESPONDING ADAPTER TO MATE IT properly TO THE RIG.

These adapters put the mic input, and the 2.5-8 volts of bias voltage on 
the right pins, and usually include a jack for a PTT switch, also on the 
right pins,  and THEY ALSO INCLUDE A RESISTOR BETWEEN HOT AND GROUND AND 
ALSO AN INLINE CAPACITOR,  one of which reduces the voltage (usually too 
hot from the rig,  8 v instead of the 2.5 - 5 volts the headset really 
looks for... like a sound card voltage supplied on the ring of the mic 
plug...)   and the capacitor retards RF getting into the mic.

You can also include a larger resistor or a potentiometer pad to further 
reduce the HOT output these microphone have... or use the attenuator 
adapter I mentioned previously.

Hooking these headsets up directly to the rig, with bias voltage at 8 to 
10 volts as supplied by most rigs, will make it a very HOT mic, indeed. 
  Your ALC will not like it (it has too little dynamic room too exercise 
in)  if you have to turn the mic input down to 2 or 3 percent.

Just MY take.



On 11/6/2011 10:07 PM, Rodney wrote:
> w4wst Harry makes a headset for any radio comes ready to work. You can get
> Harry on 3938 at 7pm  Rod w3krq
>
> -----Original Message-----
> From: Casey
> Sent: Sunday, November 06, 2011 9:47 PM
> To: tentec at contesting.com
> Subject: Re: [TenTec] Heil PROSET PLUS IC with HC4 on Omni VII?
>
> I think that's the Koss S_B_-45, yes?  Where are the 5 buck attenuators?
>
> TI2/NA7U
>
> On 11/6/2011 7:36 PM, Richards wrote:
>> If you are not excited about, or don't want to invest in the TT 777
>> headset,  A LOT of hams are really excited over the Yamaha CM-500, which
>> may need an adapter  (you make or buy on Ebay for $15 -$20)  and
>> it might like a $5 attenuator... or one you make for pennies...
>>
>> The CM-500 costs about $55 most places.   Another really good bargain
>> headset for casual SSB is the Koss SM-45 for about $30 on eBay.  You
>> will need the $5 attenuator for this one, too.
>>
>> Our contest station operators like both of these.   And they can get
>> quite fussy !
>>
>> ====================  K8JHR  ========================================
>>
>>
>> On 11/6/2011 5:42 AM, amsctalx at comcast.net wrote:
>>> Thanks to everyone that replied. I'll probably pass on this particular
>>> headset, and wait for something more appropriate for my "casual"
>>> operating style.
>>
>>
>> =
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