Kim, there are not many radios that will do that. For the price that a used
Orion goes for I wouldn't mind having one.
I gather the Orion two is somewhat superior...
Best regards - Bry Carling
> On May 1, 2014, at 10:12 PM, Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
>
> Yes, it's easy to conflate roofing filters with the more familiar IF filters.
> They don;t serve the same purpose but can be complimentary. Sherwood's
> presentation is excellent.
>
> In my case, there's a guy about 2 mi away that runs 1.5 kW with a good beam
> at 70 ft. He's strong enough to cause problems when he's on the same band and
> pointed at me. There are several AM BC stations around and couple are 50 kW
> oxyacetylene blowtorches, one at 1000 kHz. Because of them, roofing filters
> really do help on 160 m.
>
> When I took my Orion II to FD, all the CW ops fell in love with it because
> all the other local FD QRM vanished; it was as if they were all alone. Even
> the phone ops were amazed they they could tune to within a few kHz of one of
> the phone stations and have zero trouble with IMD.
>
> Kim N5OP
>
>
>> On 5/1/2014 8:38 PM, Bob McGraw - K4TAX wrote:
>> While roofing filters are indeed nice and serve a really nice function, I
>> truly believe the lack of understanding as to what they do and how the
>> perform and when they are needed is in short supply. I found that the
>> "authority" Rob Sherwood has a very nice presentation on his website where
>> he discusses the advantage and importance of roofing filters.
>>
>> My general take is: If one intends to operate with 5 to 10 active stations
>> in an area the size of a football field on an event such as Field Day, then
>> they are absolutely necessary. Otherwise, if you live in an area 5 to 10
>> miles from town and the nearest ham does not operate on the same band the
>> same time as you, then they aren't necessary but, certainly nice to have
>> available.
>>
>> Just remember, the selectivity is developed by the DSP system.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>> ----- Original Message ----- From: "Kim Elmore" <cw_de_n5op@sbcglobal.net>
>> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>> Sent: Thursday, May 01, 2014 8:16 PM
>> Subject: Re: [TenTec] Wide roofing filter for the RX-366?
>>
>>
>>> While filters are expensive, they can be swapped out without a lot of
>>> trouble. That said, I chose a wide filter of 6 kHz, then the 2.4 kHz
>>> standard filter and finally a 500 Hz filter for the narrowest. In my
>>> environment, I won't have to deal with any strong (next door) signals in a
>>> 500 Hz passband. Whenever I take the rig to, say, FD, only the main rx is
>>> much used and it has the 300 Hz roofing filter, 600 Hz, 1.0 kHz, 1.8 kHz,
>>> 2.4 kHz, 6 kHz and 20 kHz filters.
>>>
>>> I can't see the point in having a 2.7 kHz, 2.4 kHz, and 500/600 Hz filters
>>> because there's not enough difference in the 2.7 kHz and 2.4. Perhaps a the
>>> standard 2.4 kHz, 1 kHz and 500/600 Hz filter would be best if you have no
>>> interest in AM.
>>>
>>> Kim N5OP
>>>
>>>
>>>> On 4/30/2014 9:15 PM, Carl Gansen wrote:
>>>> I am curious about what members of the list are using for their wide
>>>> roofing filter
>>>> in the RX-366. At this time, with CW as my main interest, I have a 600Hz
>>>> and a
>>>> 300Hz in place in mine.
>>>>
>>>> I have little to no interest in AM but I do listen in on digital modes with
>>>> FlDigi.
>>>>
>>>> Can anybody offer some thoughts on the filter (brand & bandwidth) that they
>>>> chose
>>>> and the reasoning behind that choice?
>>>
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>>
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