[TenTec] notch filter for Eagle?

Thu Jul 20 10:38:56 EDT 2017

Mike,
Those carriers around 14030 may be from a wireless router. If there's one nearby, try turning it off.

Joe, K8MP

Sent from AOL Mobile Mail

-----Original Message-----
From: Michael Tortorella <w2iy at verizon.net>
To: 'Discussion of Ten-Tec Equipment' <tentec at contesting.com>
Sent: Thu, Jul 20, 2017 10:26 AM
Subject: Re: [TenTec] notch filter for Eagle?

Well this has certainly developed into an interesting thread but as the
poster of the original question, I am still in the dark.  It appears that
there is no notch function (in the Eagle) for CW.  If so, it's hard for me
to see how this could be superior to an adjustable notch which I could
employ on CW.  I am still stuck with all these doggone carriers.  Most are
pretty weak (s2 or less) but there is one around 14030 that is up around s7
and is pretty annoying.  Well, this is just a vacation setup so I will learn
to live with it for a few more weeks.

BTW, if anyone is chasing IOTA counters, I am on NA-055 and plan to operate
in the contest at end of July.

73
Mike W2IY

-----Original Message-----
From: TenTec [<a href="mailto:tentec-bounces at contesting.com?">mailto:tentec-bounces at contesting.com</a>] On Behalf Of Dukes HiFi
Sent: Thursday, July 20, 2017 10:03 AM
To: Discussion of Ten-Tec Equipment
Cc: Bernie Skoch
Subject: Re: [TenTec] notch filter for Eagle?

In side-by-side comparison, an Icon IC-756 Pro2 notch filter versus an
Orion/Eagle type notch filter, using my Pro 2 manual notch filter (which
also works in CW, and is inside the AGC loop), I can hear weak but desired
signals far more easily with the otherwise inferior Pro 2 than I can with
the otherwise superior Orion/Eagle. This is especially true when the
offending carrier is keyed, since the Pro 2 receiver is not constantly
adjusting gain to compensate for the keyed offending carrier.

One can SORT of obtain similar results by turning off the AGC in the
Orion/Eagle when using the notch filter as long as you don't need any AGC
action.

Gary

> On Jul 20, 2017, at 8:34 AM, Bernie Skoch via TenTec
<<a href="mailto:tentec at contesting.com">tentec at contesting.com</a>> wrote:
> 
> Rick,
> 
> I do not believe I am "out in right field."  
> 
> Someone commented that all Ten Tec notch filters are useless.  I
disagreed.
> 
> 73,
> Bernie 
> 
>> On Jul 20, 2017, at 02:30, <a href="mailto:rick at dj0ip.de">rick at dj0ip.de</a> <<a href="mailto:Rick at DJ0IP.de">Rick at DJ0IP.de</a>> wrote:
>> 
>> You guys are all out in right field.
>> 
>> No radio's auto notch filter works in CW mode.
>> They cannot distinguish between the useful tone and the disturbing tone.
>> 
>> And yes, in that case, a manual notch filter is indeed better, but show
me a
>> radio built today that has one.
>> 
>> I find the Eagle's notch filter effective on SSB.
>> 
>> 73
>> Rick, DJ0IP
>> 
>> -----Original Message-----
>> From: TenTec [<a href="mailto:tentec-bounces at contesting.com?">mailto:tentec-bounces at contesting.com</a>] On Behalf Of Bernie
>> Skoch via TenTec
>> Sent: Thursday, July 20, 2017 3:21 AM
>> To: Discussion of Ten-Tec Equipment
>> Cc: Bernie Skoch; <a href="mailto:w2iy at verizon.net">w2iy at verizon.net</a>
>> Subject: Re: [TenTec] notch filter for Eagle?
>> 
>> "It's sort of useless, like all Ten Tec notch filters..."
>> 
>> I _LOVE_ my Orion II notch filter!  
>> 
>> The automatic feature is good, but the manual one is about the best I've
>> ever used.
>> 
>> 73,
>> Bernie
>> 
>>> On Jul 19, 2017, at 16:33, Gary F <<a href="mailto:dukeshifi at comcast.net">dukeshifi at comcast.net</a>> wrote:
>>> 
>>> The Eagle does have a notch function. I don't recall how to activate it
>> but it is in the manual.
>>> 
>>> It's sort of useless, like all Ten Tec notch filters, since it is
outside
>> the AGC loop, so, while it does not have the carrier, it also attenuated
>> your desired signal by about as much as it reduces the carrier.
>>> 
>>> The reduction to 20 watts in Tune is self-defense. Orion's do it too.
This
>> is to prevent the presence of full 100 watts into a mismatch. It is good
>> policy.
>>> 
>>> Orion's had an option in which you could press the Power button, I
>> believe, to get 100 watts in Tune after match had been reached.
>>> 
>>> Red arid green the A//B VFO, there really is no A or B VFO in the
>> traditional sense and Eagle only has one tuning knob. Therefore, the A/B
>> indicator serves no function in transceive operation. In split operation,
>> that indicator should flip when going fro RX to TX to tell you which
>> displayed frequency is the TX frequency.
>>> 
>>> Gary
>>> 
>>> Sent from my iPad
>>> 
>>>> On Jul 19, 2017, at 3:05 PM, Michael Tortorella <<a href="mailto:w2iy at verizon.net">w2iy at verizon.net</a>>
wrote:
>>>> 
>>>> Hi all, I am hearing an awful lot of steady carrier signals up here in
>> the
>>>> frozen north of Downeast Maine.   Most are not very strong and they go
>> away
>>>> when I disconnect the antenna so they are external to the radio.  
>>>> Today I am chasing TR8CA on 20 CW, he is way down in the noise, and 
>>>> 100 Hz away from one of these carriers.  Sure would be nice to have 
>>>> something like a notch filter to help in situations like these but I 
>>>> could not see anywhere in the manual or front panel where I could 
>>>> notch the offending carrier.  Is there any list wisdom on this?
>>>> 
>>>> 
>>>> 
>>>> On another note, I did contact service at TT last week with my 
>>>> question about power out in autotune; after only a few days delay I 
>>>> got an answer that the power out in autotune is 20 watts even though 
>>>> the power output shown on the display is 100.  This seems not quite 
>>>> right from a human factors point of view, maybe there can be a 
>>>> firmware fix?  Also, when exchanging VFOs, the A,B labels do not 
>>>> change even when the B vfo is in large type at the top of the 
>>>> display.  I find this confusing.  OK, I guess this turned into a 
>>>> longer letter about a couple of other things besides notch filtering, 
>>>> so please excuse my prolixity and thank for the BW.  Any suggestions
>> appreciated.
>>>> 
>>>> Thanks and 73, Mike W2IY
>>>> 
>>>> 
>>>> 
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