Most of you are right. A good roofing filter will help a well designed
receiver. There are
a few issues to consider:
1. The radio's frequency reference better be just about right on. There's
not much room
for error with a 4 KHz wide filter that operates around 70MHz.
2. The filter needs to meet some tight tolerances to be centered on the
bandpass.
3. Expect the main receiver to 'sound' a little different, the noise
blanker to work different.
4. Use very short ground wires. Long ones cause leakage.
5. No, the receiver did not loose gain, background noise is lower.
6. Yes, the filter does help, but mostly is severe conditions. Do the
math. If you are working a faint
DX station next to somebody pounding in at 40db over S9, chances you will
still hear him. It's not
the receiver's fault. The average Amateur transmitter only has
intermodulation products around
30db down. His buckshot will still be 10db over S9. You will think the
chap is wide. Then there's
that Ham that turns the processor all the way up. Now the mixing products
are only 10DB down.
So if some garbage sill leaks by, don't blame the receiver. Es 73. de Dave
WA0ZZG ar
----- Original Message -----
From: <yaesu-request@contesting.com>
To: <yaesu@contesting.com>
Sent: Thursday, July 20, 2006 3:53 PM
Subject: Yaesu Digest, Vol 43, Issue 9
> Send Yaesu mailing list submissions to
> yaesu@contesting.com
>
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> or, via email, send a message with subject or body 'help' to
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>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Yaesu digest..."
>
>
> Today's Topics:
>
> 1. Re: Roofing filter (Hardy Landskov)
> 2. Re: Roofing filter (Mike Brown)
> 3. Re: Roofing filter (Cecil Acuff)
> 4. Re: FT2000 later... FT1000 BACK!? (Gary Smith)
> 5. roofing filters (Gregg Seidl)
> 6. Re: Roofing filter (Keith Morehouse)
> 7. Re: Roofing filter (John Tait)
> 8. Re: Roofing filter (Roy Reed)
> 9. RE : FT2000 later... FT1000 BACK!? (hermans)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 20 Jul 2006 09:10:01 -0700
> From: Hardy Landskov <n7rt@cox.net>
> Subject: Re: [Yaesu] Roofing filter
> To: Peter Sundberg <sm2cew@telia.com>, yaesu@contesting.com
> Message-ID: <3.0.3.32.20060720091001.0081cc20@pop.west.cox.net>
> Content-Type: text/plain; charset="us-ascii"
>
> I have had a very different experience. I have a ham that is about 3
> blocks
> away from me and he likes to ragchew on 17 and 20 meters. I could not
> operate on those bands when he was on. The radio had terrible buckshot
> type
> noise when he would transmit (SSB) I put an Inrad roofing filter in my
> FT1000D and I don't hear him anymore.
> This is definately the case where it really helped.
> 73 N7RT
>
>
> At 03:47 PM 7/20/06 +0000, Peter Sundberg wrote:
>>At risk of being flamed, I feel that this obsession with having a roofing
>>filter in the FT1000 is somewhat exaggerated.
>>
>>How many times during normal use of the radio do you notice a vast
>>improvement with the roofing filter in line?
>>How may times has this helped you to complete a contact you never would
>>have made without it?
>>
>>Yes, there are specific situations when it helps, but the radio (modified
>>per W8JI) is pretty darn good without it. Even during contests, including
>>Top band.
>>
>>FWIW.
>>
>>73 de Peter SM2CEW
>>www.sm2cew.com
>>
>>
>>
>>
>>At 21:25 2006-07-19 , Cecil Acuff wrote:
>>>Think I'll stick a roofing filter in my 1000 series and sit back and
>>>watch
>>>for a while...
>>>
>>>Cecil
>>>WB5VCE
>>>----- Original Message -----
>>>From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>>>To: <yaesu@contesting.com>
>>>Sent: Wednesday, July 19, 2006 6:57 AM
>>>Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>>>
>>>
>>>> The Ham Station is notifying those on their waiting list that they will
>>>> have
>>>> the FT-2000 in stock by the end of the month for $2999. 73, Dave,W4DN
>>>>
>>
>>
>>
>>_______________________________________________
>>Yaesu mailing list
>>Yaesu@contesting.com
>>http://lists.contesting.com/mailman/listinfo/yaesu
>>
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 20 Jul 2006 17:45:02 -0000
> From: "Mike Brown" <k9mi@sbcglobal.net>
> Subject: Re: [Yaesu] Roofing filter
> To: <yaesu@contesting.com>, "Peter Sundberg" <sm2cew@telia.com>
> Message-ID: <006701c6ac24$3a5b9b40$6401a8c0@k9mi1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Peter, I'm not going to flame you, I'm just curious. Do you have a 1000 MP
> with the Inrad roofing filter?
>
> 73, Mike K9MI
>
>
> ----- Original Message -----
> From: "Peter Sundberg" <sm2cew@telia.com>
> To: <yaesu@contesting.com>
> Sent: Thursday, July 20, 2006 15 47
> Subject: [Yaesu] Roofing filter
>
>
>> At risk of being flamed, I feel that this obsession with having a roofing
>> filter in the FT1000 is somewhat exaggerated.
>>
>> How many times during normal use of the radio do you notice a vast
>> improvement with the roofing filter in line?
>> How may times has this helped you to complete a contact you never would
>> have made without it?
>>
>> Yes, there are specific situations when it helps, but the radio (modified
>> per W8JI) is pretty darn good without it. Even during contests, including
>> Top band.
>>
>> FWIW.
>>
>> 73 de Peter SM2CEW
>> www.sm2cew.com
>>
>>
>>
>>
>> At 21:25 2006-07-19 , Cecil Acuff wrote:
>>>Think I'll stick a roofing filter in my 1000 series and sit back and
>>>watch
>>>for a while...
>>>
>>>Cecil
>>>WB5VCE
>>>----- Original Message -----
>>>From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>>>To: <yaesu@contesting.com>
>>>Sent: Wednesday, July 19, 2006 6:57 AM
>>>Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>>>
>>>
>>>> The Ham Station is notifying those on their waiting list that they will
>>>> have
>>>> the FT-2000 in stock by the end of the month for $2999. 73, Dave,W4DN
>>>>
>>
>>
>>
>> _______________________________________________
>> Yaesu mailing list
>> Yaesu@contesting.com
>> http://lists.contesting.com/mailman/listinfo/yaesu
>>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 20 Jul 2006 13:02:32 -0500
> From: "Cecil Acuff" <chacuff@cableone.net>
> Subject: Re: [Yaesu] Roofing filter
> To: <yaesu@contesting.com>, "Peter Sundberg" <sm2cew@telia.com>
> Message-ID: <00b101c6ac26$ac7a2aa0$6401a8c0@acuff1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> No Flames here....
>
> Probably in day to day use it would not be noticed and only now and again
> in
> competitive use on extremely crowded bands....like 20 mtrs.
>
> I don't consider it an obsession as much as a hedge. No need to invest in
> a
> 3 to 15 thousand dollar radio if you can make the receiver you own perform
> as well for a few hundred bucks. Now I wouldn't invest in the roofing
> filter performance improvement if the basic radio wasn't as good as the
> FT-1000 is....We all agree on that point. It is an excellent radio.
> Throwing roofing filters at badly designed radio's is probably not
> smart....
>
> I've heard reports of the roofing filter mod changing the entire feel of
> the
> FT-1000 on receive....and if getting rid of some of the buckshot from a
> nearby power house makes the QSO more enjoyable then it's worth the money.
> Personally I would like it so I could switch the thing in and out to be
> used
> as needed.
>
> I think you will find all new HF receivers will incorporate more narrow
> roofing filters in their designs. Now that close in IMD testing has been
> accepted as more real world than the old wide space testing it just makes
> more sense. Obsession.....I think it just good engineering practice.
> Nice
> that the FT-1000 lends itself to being able to easily take advantage of
> the
> improvement when desired.
>
> Just my 2 cents worth though...
>
> Cecil Acuff
> WB5VCE
> ----- Original Message -----
> From: "Peter Sundberg" <sm2cew@telia.com>
> To: <yaesu@contesting.com>
> Sent: Thursday, July 20, 2006 10:47 AM
> Subject: [Yaesu] Roofing filter
>
>
>> At risk of being flamed, I feel that this obsession with having a roofing
>> filter in the FT1000 is somewhat exaggerated.
>>
>> How many times during normal use of the radio do you notice a vast
>> improvement with the roofing filter in line?
>> How may times has this helped you to complete a contact you never would
>> have made without it?
>>
>> Yes, there are specific situations when it helps, but the radio (modified
>> per W8JI) is pretty darn good without it. Even during contests, including
>> Top band.
>>
>> FWIW.
>>
>> 73 de Peter SM2CEW
>> www.sm2cew.com
>>
>>
>>
>>
>> At 21:25 2006-07-19 , Cecil Acuff wrote:
>>>Think I'll stick a roofing filter in my 1000 series and sit back and
>>>watch
>>>for a while...
>>>
>>>Cecil
>>>WB5VCE
>>>----- Original Message -----
>>>From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>>>To: <yaesu@contesting.com>
>>>Sent: Wednesday, July 19, 2006 6:57 AM
>>>Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>>>
>>>
>>>> The Ham Station is notifying those on their waiting list that they will
>>>> have
>>>> the FT-2000 in stock by the end of the month for $2999. 73, Dave,W4DN
>>>>
>>
>>
>>
>> _______________________________________________
>> Yaesu mailing list
>> Yaesu@contesting.com
>> http://lists.contesting.com/mailman/listinfo/yaesu
>>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 20 Jul 2006 12:47:30 -0700
> From: "Gary Smith" <wa6fgi@sbcglobal.net>
> Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
> To: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>, <yaesu@contesting.com>
> Message-ID: <005501c6ac35$56c011b0$6401a8c0@garys>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> By then it won't matter.
> 73 to all,
> Gary...wa6fgi
>
>
>
> ----- Original Message -----
> From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
> To: <yaesu@contesting.com>
> Sent: Thursday, July 20, 2006 8:21 AM
> Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>
>
>>
>> I bet in 4 years it will be $2300 and by then, the bugs will be worked
>> out.
>>
>> 73
>> rob / k5uj
>>
>> From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>> To: <yaesu@contesting.com>
>> Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>> Date: Wed, 19 Jul 2006 07:57:52 -0400
>>
>> The Ham Station is notifying those on their waiting list that they will
>> have
>> the FT-2000 in stock by the end of the month for $2999. 73, Dave,W4DN
>>
>> _________________________________________________________________
>> Express yourself instantly with MSN Messenger! Download today - it's
>> FREE!
>> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>>
>> _______________________________________________
>> Yaesu mailing list
>> Yaesu@contesting.com
>> http://lists.contesting.com/mailman/listinfo/yaesu
>>
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 20 Jul 2006 14:58:23 -0500
> From: "Gregg Seidl" <K9KL@centurytel.net>
> Subject: [Yaesu] roofing filters
> To: <Yaesu@contesting.com>
> Message-ID: <002701c6ac36$dbb2d6e0$0501a8c0@laptop>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Until you have used one of those 10.6K -12.6 K radios you have no idea
> what you are missing.I have one of the other brands of 10K radios only
> because of the so called troubles of the Yaesus.That radio is by far the
> best thing I have ever used including the 1000D.Its filtering is to die
> for,I think when the 9000D is done growing it will be the same way.You can
> say it doesn't make a difference all you want but until you use one during
> a contest and just tuning around they can't be beat! Gregg K9KL
>
> ------------------------------
>
> Message: 6
> Date: Thu, 20 Jul 2006 13:07:56 -0700 (PDT)
> From: Keith Morehouse <w9rm@yahoo.com>
> Subject: Re: [Yaesu] Roofing filter
> To: Yaesu@contesting.com
> Message-ID: <20060720200756.72929.qmail@web60721.mail.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Peter Sundberg <sm2cew@telia.com> wrote:
>
> At risk of being flamed, I feel that this obsession
> with having a roofing filter in the FT1000 is somewhat
>
> exaggerated.
>
> How many times during normal use of the radio do you
> notice a vast improvement with the roofing filter in
> line? How may times has this helped you to complete a
> contact you never would have made without it?
>
> **************************
>
> Every time I operate a contest on 160 from the central
> USA...
>
> Keith
> W9RM
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>
> ------------------------------
>
> Message: 7
> Date: Thu, 20 Jul 2006 21:27:43 +0100
> From: John Tait <bravo@iol.ie>
> Subject: Re: [Yaesu] Roofing filter
> To: Yaesu@contesting.com
> Message-ID: <44BFE73F.8070609@iol.ie>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>
>
>> Peter Sundberg <sm2cew@telia.com> wrote:
>>
>> At risk of being flamed, I feel that this obsession
>> with having a roofing filter in the FT1000 is somewhat
>>
>> exaggerated.
>>
>> How many times during normal use of the radio do you
>> notice a vast improvement with the roofing filter in
>> line? How may times has this helped you to complete a
>> contact you never would have made without it?
>>
> I notice it whenever I'm in a contest, or a big pileup...NO doubt
> about it !
> However, It'll do nothing for you when you're ragchewing on 17m.
> Having it in my MP and my 1000D, has completely put me off thinking of
> upgrading my rig..
> for now anyway.
> 73
> John EI7BA http://www.iol.ie/~bravo/
>>
>>
>
>
> ------------------------------
>
> Message: 8
> Date: Thu, 20 Jul 2006 21:36:00 +0100
> From: Roy Reed <g3zig@freenet.co.uk>
> Subject: Re: [Yaesu] Roofing filter
> To: Hardy Landskov <n7rt@cox.net>
> Cc: yaesu@contesting.com
> Message-ID: <44BFE930.5A5C44BB@freenet.co.uk>
> Content-Type: text/plain; charset=us-ascii
>
> Get a valve receiver.Good luck es 73 Roy g3zig.
>
> Hardy Landskov wrote:
>>
>> I have had a very different experience. I have a ham that is about 3
>> blocks
>> away from me and he likes to ragchew on 17 and 20 meters. I could not
>> operate on those bands when he was on. The radio had terrible buckshot
>> type
>> noise when he would transmit (SSB) I put an Inrad roofing filter in my
>> FT1000D and I don't hear him anymore.
>> This is definately the case where it really helped.
>> 73 N7RT
>>
>> At 03:47 PM 7/20/06 +0000, Peter Sundberg wrote:
>> >At risk of being flamed, I feel that this obsession with having a
>> >roofing
>> >filter in the FT1000 is somewhat exaggerated.
>> >
>> >How many times during normal use of the radio do you notice a vast
>> >improvement with the roofing filter in line?
>> >How may times has this helped you to complete a contact you never would
>> >have made without it?
>> >
>> >Yes, there are specific situations when it helps, but the radio
>> >(modified
>> >per W8JI) is pretty darn good without it. Even during contests,
>> >including
>> >Top band.
>> >
>> >FWIW.
>> >
>> >73 de Peter SM2CEW
>> >www.sm2cew.com
>> >
>> >
>> >
>> >
>> >At 21:25 2006-07-19 , Cecil Acuff wrote:
>> >>Think I'll stick a roofing filter in my 1000 series and sit back and
>> >>watch
>> >>for a while...
>> >>
>> >>Cecil
>> >>WB5VCE
>> >>----- Original Message -----
>> >>From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>> >>To: <yaesu@contesting.com>
>> >>Sent: Wednesday, July 19, 2006 6:57 AM
>> >>Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>> >>
>> >>
>> >>> The Ham Station is notifying those on their waiting list that they
>> >>> will
>> >>> have
>> >>> the FT-2000 in stock by the end of the month for $2999. 73,
>> >>> Dave,W4DN
>> >>>
>> >
>> >
>> >
>> >_______________________________________________
>> >Yaesu mailing list
>> >Yaesu@contesting.com
>> >http://lists.contesting.com/mailman/listinfo/yaesu
>> >
>> _______________________________________________
>> Yaesu mailing list
>> Yaesu@contesting.com
>> http://lists.contesting.com/mailman/listinfo/yaesu
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.1.394 / Virus Database: 268.10.2/393 - Release Date: 19/07/06
>
>
> --
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> Checked by AVG Free Edition.
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>
>
> ------------------------------
>
> Message: 9
> Date: Thu, 20 Jul 2006 21:53:31 +0100
> From: "hermans" <on4kj@skynet.be>
> Subject: [Yaesu] RE : FT2000 later... FT1000 BACK!?
> To: "'Gary Smith'" <wa6fgi@sbcglobal.net>, "'Rob Atkinson, K5UJ'"
> <k5uj@hotmail.com>, <yaesu@contesting.com>
> Message-ID: <000201c6ac3e$8f439a80$35c7f351@sectf5ta8hyshw>
> Content-Type: text/plain; charset="iso-8859-1"
>
> And what would you guys think about a completely digitalized .........?
>
> Jos on4kj os5n
>
> -----Message d'origine-----
> De : yaesu-bounces@contesting.com [mailto:yaesu-bounces@contesting.com] De
> la part de Gary Smith
> Envoy? : jeudi 20 juillet 2006 20:48
> ? : Rob Atkinson, K5UJ; yaesu@contesting.com
> Objet : Re: [Yaesu] FT2000 later... FT1000 BACK!?
>
>
> By then it won't matter.
> 73 to all,
> Gary...wa6fgi
>
>
>
> ----- Original Message -----
> From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
> To: <yaesu@contesting.com>
> Sent: Thursday, July 20, 2006 8:21 AM
> Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>
>
>>
>> I bet in 4 years it will be $2300 and by then, the bugs will be worked
>> out.
>>
>> 73
>> rob / k5uj
>>
>> From: "David Novoa, W4DN" <dnovoa@bellsouth.net>
>> To: <yaesu@contesting.com>
>> Subject: Re: [Yaesu] FT2000 later... FT1000 BACK!?
>> Date: Wed, 19 Jul 2006 07:57:52 -0400
>>
>> The Ham Station is notifying those on their waiting list that they
>> will
>> have
>> the FT-2000 in stock by the end of the month for $2999. 73, Dave,W4DN
>>
>> _________________________________________________________________
>> Express yourself instantly with MSN Messenger! Download today - it's
>> FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>>
>> _______________________________________________
>> Yaesu mailing list
>> Yaesu@contesting.com
>> http://lists.contesting.com/mailman/listinfo/yaesu
>>
>
>
> _______________________________________________
> Yaesu mailing list
> Yaesu@contesting.com http://lists.contesting.com/mailman/listinfo/yaesu
>
>
>
> ------------------------------
>
> _______________________________________________
> Yaesu mailing list
> Yaesu@contesting.com
> http://lists.contesting.com/mailman/listinfo/yaesu
>
>
> End of Yaesu Digest, Vol 43, Issue 9
> ************************************
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