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AF-1 For Sale or Trade

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Ken Alexander-2

AF-1 For Sale or Trade

I have a newly built AF-1 audio filter for sale. It comes installed in the beautiful Lexan cabinet custom made by Dave, W8FGU. Photo of the AF-1 in cabinet can be viewed on Dave's website at:

http://w8fgu.home.comcast.net/~w8fgu/af1encl.html

I built the AF-1 a few months ago and it works as advertised. I just find that the filters in my K2 are so good that the additional filtering the AF-1 provides isn't really needed.

U.S. $75.00 includes the AF-1, battery, cabinet, AF-1 manual and shipping to anywhere in North America. I'll ship overseas but will have to get back to you with the postage rate first. Paypal or money order please.

I'm in the market for an Elecraft W-1 wattmeter, so if you have one and are interested in an AF-1 then maybe we can work out a trade. Or if you just want to sell your W-1 then please get in touch with me.

73 and thanks,

Ken Alexander
VE3HLS
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AC7AC

Re: AF-1 For Sale or Trade

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Ken Alexander-2

Re: AF-1 For Sale or Trade

In reply to this post by Ken Alexander-2

Hi Ron,

I did notice the peaking effect, but I didn't think the improvement was all that profound. Also, the effect of the low pass filter is barely noticeable on the K2. I sent an e-mail to tech support at Elecraft and was told to use it with a receiver with a wider audio bandwidth.

I considered that a non-answer, but after thinking more I realized what they were saying was that the K2's audio was already pretty narrow so I shouldn't expect much. They hint at that in their description of the AF-1 on their website. I think the AF-1 would be much more effective overall when used with a "lesser" receiver. For my ear, the K2 doesn't seem to need the help.

73 - Ken

--- On Tue, 3/29/11, Ron D'Eau Claire <[hidden email]> wrote:

> From: Ron D'Eau Claire <[hidden email]>
> Subject: Re: [Elecraft] AF-1 For Sale or Trade
> To: [hidden email]
> Date: Tuesday, March 29, 2011, 10:54 PM
> FWIW, among other things it does an
> excellent job of emulating the K3's
> Audio Peaking Filter (APF). The peak has variable gain and
> Q that can
> literally pull signals down in the noise up into the clear.
>
>
> Great addition to the K2 for weak signal enthusiasts.
>
> Ron AC7AC
>
> -----Original Message-----
>
>
> I have a newly built AF-1 audio filter for sale. It
> comes installed in the
> beautiful Lexan cabinet custom made by Dave, W8FGU.
> Photo of the AF-1 in
> cabinet can be viewed on Dave's website at:
>
> http://w8fgu.home.comcast.net/~w8fgu/af1encl.html
>
> I built the AF-1 a few months ago and it works as
> advertised. I just find
> that the filters in my K2 are so good that the additional
> filtering the AF-1
> provides isn't really needed.
>
> U.S. $75.00 includes the AF-1, battery, cabinet, AF-1
> manual and shipping to
> anywhere in North America. I'll ship overseas but
> will have to get back to
> you with the postage rate first. Paypal or money
> order please.
>
> I'm in the market for an Elecraft W-1 wattmeter, so if you
> have one and are
> interested in an AF-1 then maybe we can work out a
> trade. Or if you just
> want to sell your W-1 then please get in touch with me.
>
> 73 and thanks,
>
> Ken Alexander
> VE3HLS
> ______________________________________________________________
> 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
>
> ______________________________________________________________
> 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
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html

AC7AC

Re: AF-1 For Sale or Trade

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Ken Alexander-2

Re: AF-1 For Sale or Trade

Hi Ron,

Agreed! Let's face it...if you have a K2 the only way to do better is to get a K3. And if you have a K3...well, you can't hope to do better (until the K4 comes out!)

73 - Ken

--- On Wed, 3/30/11, Ron D'Eau Claire <[hidden email]> wrote:

> From: Ron D'Eau Claire <[hidden email]>
> Subject: RE: [Elecraft] AF-1 For Sale or Trade
> To: "'Ken Alexander'" <[hidden email]>
> Cc: [hidden email]
> Date: Wednesday, March 30, 2011, 10:51 AM
> No argument Ken! The AF-1 wasn't
> created as a K2-specific accessory, but as
> a useful little filter for any receiver (especially
> "lesser" receivers
> without the K2's filtering) or as an adjunct to simple
> homebrew receivers. I
> don't use the low pass capability with the K2 either.
>
> My point was that it does provide a nice "audio peaking
> filter" (APF) that
> many people enjoy on the K3. And again you are right - I
> use the APF only
> for certain specific situations where the signal is down in
> the noise.
>
> I was pointing out that capability for anyone without a K3
> who wanted that
> feature for their K2, K1 or even the KX1.
>
> 73,
>
> Ron AC7AC
>
>
> -----Original Message-----
>
> Hi Ron,
>
> I did notice the peaking effect, but I didn't think the
> improvement was all
> that profound. Also, the effect of the low pass filter is
> barely noticeable
> on the K2. I sent an e-mail to tech support at Elecraft
> and was told to use
> it with a receiver with a wider audio bandwidth.
>
> I considered that a non-answer, but after thinking more I
> realized what they
> were saying was that the K2's audio was already pretty
> narrow so I shouldn't
> expect much. They hint at that in their description of
> the AF-1 on their
> website. I think the AF-1 would be much more effective
> overall when used
> with a "lesser" receiver. For my ear, the K2 doesn't seem
> to need the help.
>
> 73 - Ken
>
>
>
> --- On Tue, 3/29/11, Ron D'Eau Claire <[hidden email]>
> wrote:
>
> > From: Ron D'Eau Claire <[hidden email]>
>
>
> > FWIW, among other things it does an
> > excellent job of emulating the K3's
> > Audio Peaking Filter (APF). The peak has variable gain
> and
> > Q that can
> > literally pull signals down in the noise up into the
> clear.
> >
> >
> > Great addition to the K2 for weak signal enthusiasts.
>
> >
> > Ron AC7AC
> >
>
>