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 <tentec@contesting.com>
> 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, rick@dj0ip.de <Rick@DJ0IP.de> 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 [mailto:tentec-bounces@contesting.com] On Behalf Of Bernie
>> Skoch via TenTec
>> Sent: Thursday, July 20, 2017 3:21 AM
>> To: Discussion of Ten-Tec Equipment
>> Cc: Bernie Skoch; w2iy@verizon.net
>> 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 <dukeshifi@comcast.net> 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 <w2iy@verizon.net> 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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