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What crystal filter do you use the most?

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dw-4

What crystal filter do you use the most?

Hello gang,
Just ordered my first K3.
I haven't ordered any filters or accessories yet.
Want to wait and see what I really will need.

I'd like to illicit your experience with the use of crystal filters for
CW.
What filter do you find you use the most and why?
I won't be using the K3 for contesting....just casual CW-only DXing and
occasional rag-chews.
Of late, I've really enjoyed getting on 40m and 30m at sunrise.

Many thanks in advance
N1BBR :-]

--
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NK7Z

Re: What crystal filter do you use the most?

Hi,
I use the 400 Hz filter for CW, and would enjoy a 1 KHz filter I
believe... The 400 is just a touch to narrow for my tastes. It works
well in crowded conditions, and I would not want to get rid of it, but a
1 KHz might get more use...
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info

On Mon, 2015-09-28 at 07:57 -0700, dw wrote:

> Hello gang,
> Just ordered my first K3.
> I haven't ordered any filters or accessories yet.
> Want to wait and see what I really will need.
>
> I'd like to illicit your experience with the use of crystal filters for
> CW.
> What filter do you find you use the most and why?
> I won't be using the K3 for contesting....just casual CW-only DXing and
> occasional rag-chews.
> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>
> Many thanks in advance
> N1BBR :-]
>

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Kenneth Christiansen-2

Re: What crystal filter do you use the most?

In reply to this post by dw-4

Hi to the gang

My vote would be for the 400 hz filter. I ordered one for my K3s and like it.

73

Ken W0CZ w0cz at i29 dot net

Sent from my iPad

> On Sep 28, 2015, at 9:57 AM, dw <[hidden email]> wrote:
>
> Hello gang,
> Just ordered my first K3.
> I haven't ordered any filters or accessories yet.
> Want to wait and see what I really will need.
>
> I'd like to illicit your experience with the use of crystal filters for
> CW.
> What filter do you find you use the most and why?
> I won't be using the K3 for contesting....just casual CW-only DXing and
> occasional rag-chews.
> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>
> Many thanks in advance
> N1BBR :-]
>
> --
> [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Kenneth Christiansen

Re: What crystal filter do you use the most?

In reply to this post by dw-4

Hi to the Gang

This is a subjective question but after using a 500 hz and 200 hz filter for 7 years I ordered a 400 filter for my K3s. The main reason is it works well for both CW and RTTY and of course the DSP does all the rest. I also ordered a 2.1 khz filter so if I go past 400 hz I get that one. It works well for me but this is just my opinion.

Ken W0CZ w0cz at i29 dot net

Sent from my iPad

> On Sep 28, 2015, at 10:18 AM, David Cole <[hidden email]> wrote:
>
> For MixW support see;
> http://groups.yahoo.com/neo/groups/mixw/info
> For Dopplergram information see:
> http://groups.yahoo.com/neo/groups/dopplergram/info
> For MM-SSTV see:
> http://groups.yahoo.com/neo/groups/MM-SSTV/info
>
>
>> On Mon, 2015-09-28 at 07:57 -0700, dw wrote:
>> Hello gang,
>> Just ordered my first K3.
>> I haven't ordered any filters or accessories yet.
>> Want to wait and see what I really will need.
>>
>> I'd like to illicit your experience with the use of crystal filters for
>> CW.
>> What filter do you find you use the most and why?
>> I won't be using the K3 for contesting....just casual CW-only DXing and
>> occasional rag-chews.
>> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>>
>> Many thanks in advance
>> N1BBR :-]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Phil Anderson

Re: What crystal filter do you use the most?

In reply to this post by dw-4

Hey DW etal,

I noticed that you like to get on 40 and 30 at sunrise......I may try
that if I can get up early enough! Have you read the article in the last
QST about the 3 myths about propagation, notably on ionization at
sunrise? It may be of benefit.

73, Phil, W0XI, Lawrence, KS.

> dw <mailto:[hidden email]>
> Monday, September 28, 2015 9:57 AM
> Hello gang,
> Just ordered my first K3.
> I haven't ordered any filters or accessories yet.
> Want to wait and see what I really will need.
>
> I'd like to illicit your experience with the use of crystal filters for
> CW.
> What filter do you find you use the most and why?
> I won't be using the K3 for contesting....just casual CW-only DXing and
> occasional rag-chews.
> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>
> Many thanks in advance
> N1BBR :-]
>

Mike Reublin NF4L

Re: What crystal filter do you use the most?

In reply to this post by Kenneth Christiansen

The filters you guys are discussing are roofing filters. The filtering you're thinking about is done digitally, and is continuously variable. The K3s isn't your Dad's analog rig.

Here's an Elecraft article explaining roofing filters. http://www.elecraft.com/K3/Roofing_Filters.htm

73, Mike NF4L

> On Sep 28, 2015, at 11:53 AM, Kenneth Christiansen <[hidden email]> wrote:
>
> Hi to the Gang
>
> This is a subjective question but after using a 500 hz and 200 hz filter for 7 years I ordered a 400 filter for my K3s. The main reason is it works well for both CW and RTTY and of course the DSP does all the rest. I also ordered a 2.1 khz filter so if I go past 400 hz I get that one. It works well for me but this is just my opinion.
>
> Ken W0CZ w0cz at i29 dot net
>
> Sent from my iPad
>
>> On Sep 28, 2015, at 10:18 AM, David Cole <[hidden email]> wrote:
>>
>> For MixW support see;
>> http://groups.yahoo.com/neo/groups/mixw/info
>> For Dopplergram information see:
>> http://groups.yahoo.com/neo/groups/dopplergram/info
>> For MM-SSTV see:
>> http://groups.yahoo.com/neo/groups/MM-SSTV/info
>>
>>
>>> On Mon, 2015-09-28 at 07:57 -0700, dw wrote:
>>> Hello gang,
>>> Just ordered my first K3.
>>> I haven't ordered any filters or accessories yet.
>>> Want to wait and see what I really will need.
>>>
>>> I'd like to illicit your experience with the use of crystal filters for
>>> CW.
>>> What filter do you find you use the most and why?
>>> I won't be using the K3 for contesting....just casual CW-only DXing and
>>> occasional rag-chews.
>>> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>>>
>>> Many thanks in advance
>>> N1BBR :-]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Bob McGraw - K4TAX

Re: What crystal filter do you use the most?

In reply to this post by Kenneth Christiansen

Ken makes a pertinent comment; "the DSP does all the rest". Suggested
filters are roofing filters and serve a function of signal path and how
signals outside of the DSP bandwidth can affect the receive
performance. Receiver selectivity is actually accomplished by the DSP
engine. Regarding the function of roofing filters, I suggest reading
material such as:
http://www.sherweng.com/documents/NC0B-Contest-U-2008-9.pdf Although a
slide presentation, the information is clearly definable and explains
the use and the application of roofing filters.

If one is not anticipating CW contest operation nor has a station nearby
physically that would be on the same band at the same time, then it is a
good likelihood that no additional filter is required. As some have
pointed out, understand that operationally the roofing filter is
selected based on the DSP bandwidth selection. If one chooses to
operate CW with a 500 Hz DSP BW, the 400 Hz roofing filter would not be
in the signal path. Changing the DSP BW to 400 Hz or less will switch
the 400 Hz roofing filter into the signal path. This would then make it
more understandable why a very narrow roofing filter might not be
advisable unless the need actually exists.

Every one has their personal preferences based on their specific
operation, physical location and proximity to other stations operating
on the same band and a host of other effects. In my case, I choose the
6.0 kHz filter because I do operate some AM, the standard 2.7 kHz
filter, the optional 1.8 kHz filter for SSB and the 500 Hz filter for
digital modes and CW. In another of my radios I do have a 300 Hz
roofing filter. I find reducing the DSP bandwidth to 300 Hz to allow
this filter to be selected is typically too tight for my operating
preferences.

73
Bob, K4TAX
K3S s/n 10,163

On 9/28/2015 10:53 AM, Kenneth Christiansen wrote:
> Hi to the Gang
>
> This is a subjective question but after using a 500 hz and 200 hz filter for 7 years I ordered a 400 filter for my K3s. The main reason is it works well for both CW and RTTY and of course the DSP does all the rest. I also ordered a 2.1 khz filter so if I go past 400 hz I get that one. It works well for me but this is just my opinion.
>
> Ken W0CZ w0cz at i29 dot net

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Guy Olinger K2AV

Re: What crystal filter do you use the most?

Again and again, we all encounter signal conditions where a very weak
wanted signal is close to a very loud unwanted signal. For this the
best filter setup is where BOTH the roofing and the DSP filters are at the
desired operating bandwidth.

That is why for CW contesting, in pure self-defense, the 400 and 250 8 pole
roofing filters are defined as 450 and 350 respectively. 450 is a "running"
bandwidth for 500 Hz separation that recognizes that many answerers to our
CQ's do not have the ears for getting close to frequency.

When up and down loud signals get too close, dropping to 350 Hz width and
using shift will help enormously without losing too much of the space
for up and down callers.

Additionally, I make sure that the filter offsets are set so the minus 30
dB points of the two filters coincide. The desired effect is that when you
tune away from an unwanted signal, at the passband edge it falls off like a
ball slowly rolled off a table.

This procedure finally made the K3 selectivity as sharp as my MP with the
Inrad 8 and 455 filters.

One does NOT have to treat the roofing filter as if it is not involved in
selectivity. Quite the contrary, as when a certain 40m Italian station is
35 over 9 up 350 Hz and I am being called by a QRP station using a wet
noodle antenna on his basement floor, who is well down in the S2 noise, who
also insists on adding /QRP to the end of his call.

This becomes more and more important as these RX improvements keep
shrinking what we thought was incoming noise and we hear ever weaker
signals. Turning the edge of roofer plus DSP into a knife is VERY useful.

73, Guy K2AV

On Monday, September 28, 2015, Bob McGraw - K4TAX <[hidden email]>
wrote:

> Ken makes a pertinent comment; "the DSP does all the rest". Suggested
> filters are roofing filters and serve a function of signal path and how
> signals outside of the DSP bandwidth can affect the receive performance.
> Receiver selectivity is actually accomplished by the DSP engine.
>

--
Sent via Gmail Mobile on my iPhone
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NK7Z

Re: What crystal filter do you use the most?

In reply to this post by Mike Reublin NF4L

Hi Mike,
I understand it is a roofing filter... I have a number of hams, (5),
all within 1.5 miles of me, I need the roofing filter to remove them
during contests... :)
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info

On Mon, 2015-09-28 at 12:13 -0400, Mike Reublin NF4L wrote:

> The filters you guys are discussing are roofing filters. The filtering you're thinking about is done digitally, and is continuously variable. The K3s isn't your Dad's analog rig.
>
> Here's an Elecraft article explaining roofing filters. http://www.elecraft.com/K3/Roofing_Filters.htm
>
> 73, Mike NF4L
>
>
> > On Sep 28, 2015, at 11:53 AM, Kenneth Christiansen <[hidden email]> wrote:
> >
> > Hi to the Gang
> >
> > This is a subjective question but after using a 500 hz and 200 hz filter for 7 years I ordered a 400 filter for my K3s. The main reason is it works well for both CW and RTTY and of course the DSP does all the rest. I also ordered a 2.1 khz filter so if I go past 400 hz I get that one. It works well for me but this is just my opinion.
> >
> > Ken W0CZ w0cz at i29 dot net
> >
> > Sent from my iPad
> >
> >> On Sep 28, 2015, at 10:18 AM, David Cole <[hidden email]> wrote:
> >>
> >> For MixW support see;
> >> http://groups.yahoo.com/neo/groups/mixw/info
> >> For Dopplergram information see:
> >> http://groups.yahoo.com/neo/groups/dopplergram/info
> >> For MM-SSTV see:
> >> http://groups.yahoo.com/neo/groups/MM-SSTV/info
> >>
> >>
> >>> On Mon, 2015-09-28 at 07:57 -0700, dw wrote:
> >>> Hello gang,
> >>> Just ordered my first K3.
> >>> I haven't ordered any filters or accessories yet.
> >>> Want to wait and see what I really will need.
> >>>
> >>> I'd like to illicit your experience with the use of crystal filters for
> >>> CW.
> >>> What filter do you find you use the most and why?
> >>> I won't be using the K3 for contesting....just casual CW-only DXing and
> >>> occasional rag-chews.
> >>> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
> >>>
> >>> Many thanks in advance
> >>> N1BBR :-]
> >>
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email]
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to [hidden email]
> >>
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email]
>

Bob McGraw - K4TAX

Re: What crystal filter do you use the most?

I would think it best to get the K3S and see how it performs before
throwing money at a problem that may not actually exist. Adding filters
if and as needed is rather simple.

73
Bob, K4TAX
K3S s/n 10,163

On 9/28/2015 1:15 PM, David Cole wrote:
> Hi Mike,
> I understand it is a roofing filter... I have a number of hams, (5),
> all within 1.5 miles of me, I need the roofing filter to remove them
> during contests...:)

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Joe Subich, W4TV-4

Re: What crystal filter do you use the most?

In reply to this post by dw-4

> What filter do you find you use the most and why?

The 400 Hz filter as it works well for both CW and RTTY.

If I were not so concerned about RTTY, I would consider the
*INRAD* 500 Hz (8 pole) filter for CW along with the 200 Hz
(5 pole) Elecraft filter for times when adjacent signals are
just too strong (I already have the 200 Hz filters).

For SSB, I believe the stock 2700 Hz is more than satisfactory.
The improvement from the 2800 Hz [8 pole] filter does not justify
the "exchange price" - the savings from sticking to the stock
2700 Hz filter can be used for the 400 Hz CW filter or to *add*
either an 1800 Hz or 2100 Hz "narrow" SSB filter if needed.

73,

... Joe, W4TV

On 9/28/2015 10:57 AM, dw wrote:

Re: What crystal filter do you use the most?

In reply to this post by Phil Anderson

I am not DW but I think I qualify as etal!. I have been doing CW since I was a pup and I am older than Hector. I started with a BC455 with no crystal filter and the bandwidth of the receiver was about half the novice band. I now have a K3 with 500 and 200 CW filters. I sometimes use the 200 for rare DX that is in the noise with lots of QRM, but most of the time I set the bandwidth to about 500 hertz. The 500 hertz filter suits me fine. When I use an older rig without digital bandwidth and with a 500 hertz filter I am real happy. With the K3 I am happy with about 500 hertz band width for rag chew contacts. It does not mother me to hear three or four signals unless they are about the same strength and about the same tone (frequency). My K3 has standard 2700 hertz SSB, standard 500 hertz CW plus an additional 200 hertz filter. I think I wasted money for the 200 hertz filter that I seldom use and I can't document any QSO that I required the 200 hertz filter to make the contact.But I am easy to please and was quite happy with the BC455 and a couple of crystals in 1956. Willis 'Cookie' Cooke,TDXS Contest Chairman K5EWJ & Trustee N5BPS
From: Phil Anderson <[hidden email]>
To: dw <[hidden email]>
Cc: [hidden email]
Sent: Monday, September 28, 2015 11:10 AM
Subject: Re: [Elecraft] What crystal filter do you use the most?

Hey DW etal,

I noticed that you like to get on 40 and 30 at sunrise......I may try
that if I can get up early enough! Have you read the article in the last
QST about the 3 myths about propagation, notably on ionization at
sunrise? It may be of benefit.

73, Phil, W0XI, Lawrence, KS.

---
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https://www.avast.com/antivirus
______________________________________________________________
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jh3sif

Re: What crystal filter do you use the most?

In reply to this post by dw-4

I have 3 roofing filters, 400Hz for CW and digital, 2.8kHz for SSB and 13kHz for listening to broadcast stations. But I should have selected 500Hz 5-pole and 2.7kHz 5-pole instead of 400Hz and 2.8kHz. I have very strong local power line noise, often S3 to S5 level. Steep filter like 8-pole filters sometimes internally worsen the noise level and cause less S/N to weak signals. When I need to use GRITTY for very weak DX RTTY signal, I have to widen the passband to more than 500Hz for better S/N.

73 de JH3SIF, Keith

> 2015/09/28 23:57、dw <[hidden email]> のメール：
>
> Hello gang,
> Just ordered my first K3.
> I haven't ordered any filters or accessories yet.
> Want to wait and see what I really will need.
>
> I'd like to illicit your experience with the use of crystal filters for
> CW.
> What filter do you find you use the most and why?
> I won't be using the K3 for contesting....just casual CW-only DXing and
> occasional rag-chews.
> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>
> Many thanks in advance
> N1BBR :-]
>
> --
> [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Benny Aumala-2

Re: What crystal filter do you use the most?

In reply to this post by dw-4

Being 95% CW and only sometimes on SSB
I use almost all the time 500Hz 5-pole filter.
I have 200Hz but use it very rarely.

This is just my experience since beginning of K3 history.
235 countries in QRP in 2 years, all States, all Oblasts.

Benny OH9NB

---
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Jerry Moore

Re: What crystal filter do you use the most?

In reply to this post by Joe Subich, W4TV-4

The advice I received was to try the radio stock then select what I needed. I didn't want to deal with offsets or aligning filters when I eventually get the sub RX. Because of this I opted to upgrade to the 2.8KHz and purchased the 400Hz on this list. When I get the sub rx I'll buy 250Hz x2, and duplicate the filters in the main rx.

My I ideas (which may be wrong) are to strongly leverage diversity rx (two separate antennas and receivers).

I was planning to get the P3 first but I'm using a poor man's Panadapter (SDR and HDSDR software which works very well. I'm not sure what the P3 will do for me at $700 that my current setup won't other than look nice and allow pc-less operation. I use HRD for logging anyway so... (shrug).

I've found under normal use with the filters not configured the receiver works really well. Where the filters seem to matter is when trying to hear weak signals near VERY close and strong signals. Even without the filters it's copyable after some fiddling. The filters make it easy for me. Play with the rig and learn all the buttons and features.

While waiting for the new K3S book to come out ( to be released soon enough so I pre- ordered/paid) I went ahead and bought the current K3 book and it's answering most of questions.

Hope this helps
Jer
AE4PB -K3S S.N. 10324

On September 28, 2015 2:35:13 PM EDT, "Joe Subich, W4TV" <[hidden email]> wrote:

>
> > What filter do you find you use the most and why?
>
>The 400 Hz filter as it works well for both CW and RTTY.
>
>If I were not so concerned about RTTY, I would consider the
>*INRAD* 500 Hz (8 pole) filter for CW along with the 200 Hz
>(5 pole) Elecraft filter for times when adjacent signals are
>just too strong (I already have the 200 Hz filters).
>
>For SSB, I believe the stock 2700 Hz is more than satisfactory.
>The improvement from the 2800 Hz [8 pole] filter does not justify
>the "exchange price" - the savings from sticking to the stock
>2700 Hz filter can be used for the 400 Hz CW filter or to *add*
>either an 1800 Hz or 2100 Hz "narrow" SSB filter if needed.
>
>73,
>
> ... Joe, W4TV
>
>
>On 9/28/2015 10:57 AM, dw wrote:
>> Hello gang,
>> Just ordered my first K3.
>> I haven't ordered any filters or accessories yet.
>> Want to wait and see what I really will need.
>>
>> I'd like to illicit your experience with the use of crystal filters
>for
>> CW.
>> What filter do you find you use the most and why?
>> I won't be using the K3 for contesting....just casual CW-only DXing
>and
>> occasional rag-chews.
>> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>>
>> Many thanks in advance
>> N1BBR :-]
>>
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Doug Ellmore Sr.

Re: What crystal filter do you use the most?

In reply to this post by dw-4

On my K3 I have an LP-Pan connected to my IF out on the main receiver and a
FunCube Pro on the subreceiver IF out. The LP-Pan is setup to a Steinberg
USB UR22 sound card. Therefore, I have two panadapters, one through Win4K3
for the main receiver, the second using NAP3 v5 to the funcube pro.

This give full spectrum display. I say this, because my normal operating
mode with SSB is 2.8k hz and CW 250 hz dialed down to 50 hz. I play with
RTTY in FSK mode at 300-400 hz.

I my main receiver I have 13k hz for FM and AM, 2.8k, 2.1k, and 250k. In
the sub receiver I have 2.8k only.

During some DATA A modes using other digital software, I may adjust the
filter settings from 3k down.

CW Skimmer is setup to ready the main receiver, so it has 192khz decode.

Even during contests I usually keep my SSB filter settings at 2.8k and cw
at 50 hz. With Win4K3 I can see most of what I need for CW and SSB for
both running and S&P.

73 Doug NA1DX
www.ellmore.net/na1dx
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RobertG

Re: What crystal filter do you use the most?

In reply to this post by dw-4

The lineup here is: 2.7 & 1.9 for ssb, 500/8pole and 200/5pole for cw.
I'm seldom on ssb, 95%+ on cw, so can't say anything useful for the
first two filters. I use both of the cw filters as conditions and
circumstances dictate. The 500cps filter is first choice and does most
of the work here. The 200cps filter is great for contest S&P in
conjunction with an LPan panadapter as well as for very weak signals.
While the DSP is undoubtedly doing the heavy lifting, I've got myself
convinced that the 200cps filter does help when called upon.

...robert

On 9/28/2015 14:57, dw wrote:

--
Robert G Strickland, PhD ABPH - KE2WY
[hidden email]
Syracuse, New York, USA
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Edward R Cole

Re: What crystal filter do you use the most?

In reply to this post by dw-4

Doug,

Not sure what the first paragraph has to do with filter selection on the K3?

Using the 1st IF output one bypasses all filters and the DSP 2nd IF
completely. I know because I do that for both main and sub-receiver
on my K3. I use two LP-Pan (one for each IF).

You do not define "Full" in spectrum. I suspect you mean you use the
full bandwidth of your soundcard or the funcube. This is 192-KHz for
the best soundcards that I am aware of. 190-KHz is full bandwidth
for my SDR-IQ. Do not know what is possible with a fun-cube.

Full spectrum for my station is 100-KHz to 26-GHz; only display that
will cover that for me is my old surplus HP141T spectrum analyzer -
max scan spectrum is 200-MHz wide with the mw plug-in starting at fo =1500-MHz.

73, Ed - KL7UW

From: Doug Ellmore <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] What crystal filter do you use the most?
Message-ID:
<[hidden email]>
Content-Type: text/plain; charset=UTF-8

On my K3 I have an LP-Pan connected to my IF out on the main receiver and a
FunCube Pro on the subreceiver IF out. The LP-Pan is setup to a Steinberg
USB UR22 sound card. Therefore, I have two panadapters, one through Win4K3
for the main receiver, the second using NAP3 v5 to the funcube pro.

This give full spectrum display. I say this, because my normal operating
==snip

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[hidden email]

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John Shadle

Re: What crystal filter do you use the most?

In reply to this post by dw-4

I am one of those folks who has the INRAD 700Hz filter (special-ordered by
the guys at UNPCBs, http://www.unpcbs.com/). I use it exclusively for
scanning the bands on CW. When I want to get tighter, I have the 400Hz
filter below that. I've found that combination works wonderfully for me.

For SSB, I just have the stock 5 pole filter. I also have the AM filter,
but only use it for SWLing.

73
-john NE4U
Madison, WI
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