second receiver. I
don't feel the need for more, but I have zero interest in FM, AM and ESSB.
Willis 'Cookie' Cooke
K5EWJ
--- On Fri, 2/6/09, Kjeld Holm k...@kh-translation.dk wrote:
From: Kjeld Holm k...@kh-translation.dk
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
To: elecraft
@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Dear all,
Thanks for all the kind answers.
Sorry for all that fuss. Somehow I mixed up everything so I ended up
thinking of some nonsense like 1.0 kHz for SSB. :-o
I will go for 250 Hz and 400 Hz for CW plus 2.8 kHz for SSB. And also
@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Dear all,
Thanks for all the kind answers.
Sorry for all that fuss. Somehow I mixed up everything so I ended up
thinking of some nonsense like 1.0 kHz for SSB. :-o
I will go for 250 Hz and 400 Hz for CW plus 2.8 kHz for SSB
Quoted discussion from K2AV and W4TV:
Anyone who asks us what filters to buy for CW contesting, we
tell them 400/250 8 pole set to 450/350. Tried and true, not
theory.
W4TV and I will just have to agree to disagree.
I don't think there is any disagreement ... unless you
, W4TV
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm
Sent: Friday, February 06, 2009 3:32 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Dear all,
Once
: [Elecraft] [K3] Elecraft roofing filters
Dear all,
Once and again: Thanks to all for very interesting and informative answers.
Right now my conclusion according to my planed way of operation is the
following setup
2 pcs KFL3A-2.8_2.7sw replacement K3 and KRX3
2 pcs KFL3A-1.8K SSB
2 pcs KFL3A-200 5
Kleld there has been some debate over the use of FM bandwidth filtering
to transmit AM (or ESSB), I don't have an FM filter so cannot give a
measurement for the bandwidth that may result from transmitting AM or
ESSB through the filter. Using the 6 KHz AM filter gives a nice tight
transmission on
] Elecraft roofing filters
Dear all,
In the Roofing Filter Notes from Wayne and Eric link on the Order page I
see the two sentences: Add narrower/wider filters as you prefer. I like to
use the 1.0 kHz crystal filter when tuning a crowded band or listening to a
pile up.
Can anyone point me
Dear all,
In the Roofing Filter Notes from Wayne and Eric link on the Order page I
see the two sentences: Add narrower/wider filters as you prefer. I like to
use the 1.0 kHz crystal filter when tuning a crowded band or listening to a
pile up.
Can anyone point me to a place that can tell me
Message-
From: W0MU Mike Fatchett [mailto:w...@w0mu.com]
Sent: 5. februar 2009 15:28
To: 'Kjeld Holm'
Subject: RE: [Elecraft] [K3] Elecraft roofing filters
They are available on the website.
KFL3A-1.0K 1 kHz, 8-pole roofing filter125.95
I have one in my K3 but I don't use it too
I have the 400 and don't see the need for 250
--Original Message--
From: Kjeld Holm
Sender: elecraft-boun...@mailman.qth.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Sent: Feb 5, 2009 11:27 AM
Dear all,
Thanks for all the kind answers.
Sorry
the need for 250
--Original Message--
From: Kjeld Holm
Sender: elecraft-boun...@mailman.qth.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Sent: Feb 5, 2009 11:27 AM
Dear all,
Thanks for all the kind answers.
Sorry for all that fuss. Somehow I
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Sent: Feb 5, 2009 11:27 AM
Dear all,
Thanks for all the kind answers.
Sorry for all that fuss. Somehow I mixed up everything so I ended up
thinking of some nonsense like 1.0 kHz
,
... Joe, W4TV
--Original Message--
From: Kjeld Holm
Sender: elecraft-boun...@mailman.qth.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Sent: Feb 5, 2009 11:27 AM
Dear all,
Thanks for all the kind answers.
Sorry for all
The 250Hz and 400Hz filters are very similar, in reality. Having both
is redundant. But having a 1.8kHz or 2.1kHz for SSB RX is a good
thing for contesting. Note that some people have used a custom 1.5kHz
roofing filter with good success for SSB contesting.
I have to agree with Doug on
W4TV wrote:
The difference between the 250 and 400 Hz filters is not
enough to be worthwhile (approximately 375 Hz vs. 430 Hz).
Joe, what is your source for these numbers? I've seen numbers
like this mentioned previously on the reflector.
I recently tested my K3 CW roofing filters using the
] Elecraft roofing filters
W4TV wrote:
The difference between the 250 and 400 Hz filters is not
enough to be worthwhile (approximately 375 Hz vs. 430 Hz).
Joe, what is your source for these numbers? I've seen numbers
like this mentioned previously on the reflector.
I recently tested my
W4TV wrote:
My source is Elecraft: www.elecraft.com/K3/K3_8_pole_plots.htm
Look specifically at the last two plots which show:
KFL3A-400 KFL3A-250
-6 dB 435 Hz 370 Hz
-60 dB 935 Hz 785 Hz
SF2.15:1 2.12:1
INRAD do
ni0c wrote:
My testing was done in CW mode with the pitch in the
low 300's (320 Hz, as I recall). So, when I repeat the tests,
I'll vary the pitch and see what happens, say 300 Hz, 600 hz,
and 800 Hz.
Another person who likes a low pitch! This really affects what you will
hear
...@subich.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
W4TV wrote:
My source is Elecraft: www.elecraft.com/K3/K3_8_pole_plots.htm
Look specifically at the last two plots which show:
KFL3A-400 KFL3A-250
-6 dB 435 Hz
Subject: [Elecraft] [K3] Elecraft roofing filters
W4TV wrote:
The difference between the 250 and 400 Hz filters is not
enough to be worthwhile (approximately 375 Hz vs. 430 Hz).
Joe, what is your source for these numbers? I've seen numbers
like this mentioned previously on the reflector
That's a wish for 10 Hz shift/width below, not 50 :)
- Original Message -
From: Guy Olinger, K2AV
To: ni0c ; elecraft@mailman.qth.net
Sent: Tuesday, August 04, 2009 10:14 PM
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Having used three different K3's equipped
To: ni0c; elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Having used three different K3's equipped with 4 different
sets of 250 400 hz 8 poles in overload city major contests,
the usefulness of these filters is belied by the apparent
closeness
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