[TenTec] What's Going to be Next

[Carl Moreschi]

I'm not saying there won't be situations where the signal will be more 
comfortable to listen to by reducing RF gain, I'm just saying that from 
a pure physics point of view, the signal to noise ratio does not change 
as RF gain is reduced.

And I'm not saying you don't need an RF gain control.

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com

On 1/20/2014 4:32 PM, José Félix Ballester wrote:
> All,
>
> For whatever reason reducing RF gain on my Eagle works much better for improving voice intelligibility than on my previous Icom 756 Pro.
>
> 73 de Pepe WP3HW
>
> On Jan 20, 2014, at 5:28 PM, Rick - DJ0IP / NJ0IP<Rick at DJ0IP.de>  wrote:
>
> Carl, here's what I told Rob when he said the same thing to me.
>
> Some people (me for instance) have a hearing problem in that we cannot hear
> much of anything in the presence of moderate ambient noise.  If we reduce
> the RF gain slowly, not much happens but then suddenly the desired signal
> pops up out of nowhere.
>
> I have a really bad problem working the booth at hamfests.  The customer
> across the table from me is nearly shouting at me and I can't understand a
> word he's saying.  My buddy working the booth with me is often 10' behind me
> on the other side of the booth and he understands what my customer said.
>
> It has nothing to do with radio technology.  It is hearing defect.  For us,
> it is as though the signal to noise ratio suddenly improves - a lot.  The
> way the RF gain works in Ten-Tec radios is a big advantage for me.
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
> Moreschi
> Sent: Monday, January 20, 2014 10:21 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] What's Going to be Next
>
> I said this before and I will say this again.  Rob Sherwood agrees with me
> on this.  And I know I am going to get beat up on this but I'm tired of
> hearing wrong things about RF gain.
>
> RF gain has absolutely no effect on signal to noise ratio.  Reducing RF gain
> reduces the noise.  But it also reduces the signal in the same proportion.
> It is useful to reduce the RF gain in situations where the signal is much
> higher than the noise so that noise is not heard in between transmissions.
> But to hear the very weakest signals, the RF gain must be high enough to
> hear some noise.
>
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
> On 1/20/2014 3:55 PM, Bob McGraw - K4TAX wrote:
>> The answer is a resounding YES. The implementation of the RF Gain, as
>> it is integrated with the AGC system, makes for effective performance
>> with regard to signal vs. noise.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>> ----- Original Message ----- From: "Charles Nagel"
>> <cnagel at sbcglobal.net>
>> To:<tentec at contesting.com>
>> Sent: Monday, January 20, 2014 12:40 PM
>> Subject: [TenTec] What's Going to be Next
>>
>>
>>> Bob, K4TAX,
>>>
>>> One of the features I always liked about the Omni VII was its broadly
>>> tuned RF gain which had the ability to reduce noise while appearing
>>> to enhance or maintain the signal you are trying to hear. In your
>>> opinion does the Eagle's RF gain function similarly? Most RF gains
>>> including K3's reduce noise and signal and do it at the maximum
>>> nearly fully clockwise position.
>>>
>>> 73,
>>>
>>> Charles, K0CW
>>>
>>> Sent from my iPad
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>
>>
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