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Re: [TenTec] notch filter for Eagle?

To: n4py3@earthlink.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] notch filter for Eagle?
From: Rick Cochran via TenTec <tentec@contesting.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 20 Jul 2017 20:51:33 -0400
List-post: <mailto:tentec@contesting.com>
Well, use almost all CW on my OMNI VII.  I am not sure what the notch filter 
is.  Never used it.

I have a couple of Yaesu rigs and have no idea how to use notch.

Doesn't sound like a critical feature to me.

73s,

WO8L 



Sent from my iPhone

> On Jul 20, 2017, at 8:22 PM, Carl Moreschi <n4py3@earthlink.net> wrote:
> 
> I find the hardware noise blanker on my Orion works very well.  It's on a par 
> with the Flex 6500 noise blanker system.
> 
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
> 
>> On 7/20/2017 8:18 PM, David W LeJeune, Sr wrote:
>> Thanks, Rick.  I'd heard that Rob had a hand in it's improvement.  Had a 
>> friend who had one of the original Orion's and the noise blanker was almost 
>> worthless.  On my Orion II, the auto notch still causes distortion of the 
>> audio signal when in use.  Not sure if this is common.  Still use the Orion 
>> II on 80meter SSB and a lot on CW on all bands.  But the Flex 6500 is a lot 
>> better than my old Flex 5000 on CW.
>> 
>> Dave WN5V
>> 
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of 
>> rick@dj0ip.de
>> Sent: Thursday, July 20, 2017 4:55 PM
>> To: 'Discussion of Ten-Tec Equipment'
>> Subject: Re: [TenTec] notch filter for Eagle?
>> 
>> Dave,
>> 
>> That is only because Rob Sherwood worked long and hard on Ten-Tec and FLEX 
>> to fix their problems.  When they originally shipped, neither were any good 
>> at blanking electric fences.
>> We all owe Rob a huge amount of gratitude for the many years of service he 
>> has given us.
>> 
>> 73
>> Rick, DJ0IP
>> 
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of David W 
>> LeJeune, Sr
>> Sent: Thursday, July 20, 2017 9:48 PM
>> To: 'Discussion of Ten-Tec Equipment'
>> Subject: Re: [TenTec] notch filter for Eagle?
>> 
>> I have an electrical fence next door.  Both the noise blanker in my Orion II 
>> and the one in my Flex 6500 easily take out that type of noise as well as 
>> ignition noise.  The Orion has a manual notch filter (sort of).  It's really 
>> a fixed freq notch at either 300 hz or 1050 hz.  You can use that with CW 
>> and the RIT - move the interfering hetrodyne inside of the selected notch. 
>> Of course, you have to accept the change in the pitch of the CW signal.
>> 
>> Dave WN5V
>> 
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of 
>> rick@dj0ip.de
>> Sent: Thursday, July 20, 2017 9:36 AM
>> To: 'Discussion of Ten-Tec Equipment'
>> Subject: Re: [TenTec] notch filter for Eagle?
>> 
>> Gary,
>> 
>> Your Pro 2 of course is ancient history now.  Was a great radio in its day.
>> Manual notch filters are fine on CW because "we" use our brain to notch the 
>> disturbance and not the desired frequency.  The auto-notch can't tell the 
>> difference.
>> 
>> Regardless of what it can and can't do, if it dies, you probably won't even 
>> get spare parts for it.  And brand new radios are no longer coming with 
>> manual notch filters (except for the old stock sitting on shelves and being 
>> offered at dumping prices to get rid of it).
>> 
>> If my memory serves me right, that was still one of the radios with a useful 
>> noise blanker for blanking out electrical fences.  None of the new DSP noise 
>> blankers can do that as well as the old noise blankers.
>> 
>> There certainly were advantages in the older radios but we will probably 
>> only see one more new radio come out in Japan with that old technology...at 
>> the end of this year.
>> 
>> I don't know if Mike will bring out an Eagle or Omni VII again.  The eagle 
>> has a good noise blanker, the OM7 has a DSP blanker, but it has been 
>> improved in firmware for use near electrical fences; still not as good as 
>> older technology though.
>> 
>> Ones step forward, two steps back! (hi)
>> 
>> 73
>> Rick
>> 
>> 
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Dukes HiFi
>> Sent: Thursday, July 20, 2017 4:03 PM
>> 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<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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>>>>>> http://www.avg.com
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>>>>> 
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