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2.8 kHz filter tilt

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ab2tc

2.8 kHz filter tilt

Hi again,

A little while ago I wrote the message below. I am still searching for ways to compensate for the tilt in my new 2.8kHz crystal filter. One way would be to have a way to set the RX equalizer through a serial command / macro. Is this going to happen soon? Another way would be to have the RX equalizer settings stored by mode so they could be different for USB and LSB. Is this going to happen soon? Am I really asking too much here? I spent money getting the 8 pole 2.8kHz filter hoping it would solve the tonality difference between USB and LSB, but achieved nothing. Recently there was somebody on here wishing that Elecraft would sort these filters weeding out the ones with a bad tilt. Should I order another one hoping to get one with a flatter response?

AB2TC - Knut

Hello all,

I recently replaced the 5-pole 2.7kHz roofing filter in my K3 with the
8-pole 2.8kHz hoping to get rid of the difference in tonality between USB
and LSB. But the difference is still there. These two links show the noise
spectrum of the receiver in USB and LSB.

http://ab2tc.getmyip.com:8000/pictures/usb.png
http://ab2tc.getmyip.com:8000/pictures/lsb.png

In USB there is a definite upward tilt of the passband and the opposite for
LSB. This is quite audible. Is this normal and is there anything I can do
about it (other than asking Elecraft to add by mode equalizer)?

AB2TC - Knut

Barry N1EU

Re: 2.8 kHz filter tilt

Knut, does that Spectrum Lab software allow you to do time averaging for the plots? If you can average over 500+ samples, it will smooth out the plot and make it more useful and readable.

73, Barry N1EU

ab2tc wrote

These two links show the noise
spectrum of the receiver in USB and LSB.

http://ab2tc.getmyip.com:8000/pictures/usb.png
http://ab2tc.getmyip.com:8000/pictures/lsb.png

David Gilbert

Re: 2.8 kHz filter tilt

In reply to this post by ab2tc

I sometimes marvel at the number of different directions Elecraft gets
pulled with respect to the K3. I can't imagine two more polar opposite
message threads than this one and the recent ones discussing AGC
action. I'm not trying to overtly judge the merits of either camp, but
one is trying to optimize the rig as an audiophile piece of equipment by
eliminating 4db of passband tilt on single strong signals in a
conversational setting and the other is trying to optimize its
communication capabilities by eliminating IMD mush on multiple low level
signals in a contest setting.

Hopefully for the sake of Wayne, Eric, Lyle and company schizophrenia is
not an acquired disease ...

73,
Dave AB7E

On 12/12/2010 3:18 PM, ab2tc wrote:

> Hi again,
>
> A little while ago I wrote the message below. I am still searching for ways
> to compensate for the tilt in my new 2.8kHz crystal filter. One way would be
> to have a way to set the RX equalizer through a serial command / macro. Is
> this going to happen soon? Another way would be to have the RX equalizer
> settings stored by mode so they could be different for USB and LSB. Is this
> going to happen soon? Am I really asking too much here? I spent money
> getting the 8 pole 2.8kHz filter hoping it would solve the tonality
> difference between USB and LSB, but achieved nothing. Recently there was
> somebody on here wishing that Elecraft would sort these filters weeding out
> the ones with a bad tilt. Should I order another one hoping to get one with
> a flatter response?
>
> AB2TC - Knut
>
> Hello all,
>
> I recently replaced the 5-pole 2.7kHz roofing filter in my K3 with the
> 8-pole 2.8kHz hoping to get rid of the difference in tonality between USB
> and LSB. But the difference is still there. These two links show the noise
> spectrum of the receiver in USB and LSB.
>
> http://ab2tc.getmyip.com:8000/pictures/usb.png
> http://ab2tc.getmyip.com:8000/pictures/lsb.png
>
> In USB there is a definite upward tilt of the passband and the opposite for
> LSB. This is quite audible. Is this normal and is there anything I can do
> about it (other than asking Elecraft to add by mode equalizer)?
>
> AB2TC - Knut
>

Phillip Lontz

K3 for AM broadcast?

In reply to this post by ab2tc

I have a friend in Mali that wants to set up an AM radio some were out in the boonies.
No Reliable AC power etc etc third world problems import duty tax endless very red tape.
So the question is....
Can the K3 be made to transmit in the 1600 kc freq?
25 to 50 watts.
Is this even a reasonable idea?

Sent from my iPad

On Dec 12, 2010, at 3:18 PM, ab2tc <[hidden email]> wrote:

>
> Hi again,
>
> A little while ago I wrote the message below. I am still searching for ways
> to compensate for the tilt in my new 2.8kHz crystal filter. One way would be
> to have a way to set the RX equalizer through a serial command / macro. Is
> this going to happen soon? Another way would be to have the RX equalizer
> settings stored by mode so they could be different for USB and LSB. Is this
> going to happen soon? Am I really asking too much here? I spent money
> getting the 8 pole 2.8kHz filter hoping it would solve the tonality
> difference between USB and LSB, but achieved nothing. Recently there was
> somebody on here wishing that Elecraft would sort these filters weeding out
> the ones with a bad tilt. Should I order another one hoping to get one with
> a flatter response?
>
> AB2TC - Knut
>
> Hello all,
>
> I recently replaced the 5-pole 2.7kHz roofing filter in my K3 with the
> 8-pole 2.8kHz hoping to get rid of the difference in tonality between USB
> and LSB. But the difference is still there. These two links show the noise
> spectrum of the receiver in USB and LSB.
>
> http://ab2tc.getmyip.com:8000/pictures/usb.png
> http://ab2tc.getmyip.com:8000/pictures/lsb.png
>
> In USB there is a definite upward tilt of the passband and the opposite for
> LSB. This is quite audible. Is this normal and is there anything I can do
> about it (other than asking Elecraft to add by mode equalizer)?
>
> AB2TC - Knut
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/2-8-kHz-filter-tilt-tp5829094p5829094.html
> Sent from the [K3] mailing list archive at Nabble.com.
> ______________________________________________________________
> 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

k6dgw

Re: 2.8 kHz filter tilt

In reply to this post by David Gilbert

Last time I checked, DSM-IV said it was not known to be contagious.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org

On 12/12/2010 3:06 PM, David Gilbert wrote:
>
> Hopefully for the sake of Wayne, Eric, Lyle and company schizophrenia is
> not an acquired disease ...
______________________________________________________________
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n7ws

Re: 2.8 kHz filter tilt

In reply to this post by ab2tc

I think you should save your money. Apparently, they appear to have a lot, if not all, filters that behave this way. Short of having a more symmetrical filter in place the two sidebands aren't ever going to sound the same. I know that theory says we shouldn't be able to hear a difference, but it's quite audible and quite annoying to me.

Here's a plot of mine: http://k6mhe.com/n7ws/Elecraft_2_8_Filter.gif

Wes N7WS

--- On Sun, 12/12/10, ab2tc <[hidden email]> wrote:

> From: ab2tc <[hidden email]>
> Subject: [Elecraft] 2.8 kHz filter tilt
> To: [hidden email]
> Date: Sunday, December 12, 2010, 3:18 PM
>
> Hi again,
>
> A little while ago I wrote the message below. I am still
> searching for ways
> to compensate for the tilt in my new 2.8kHz crystal filter.
> One way would be
> to have a way to set the RX equalizer through a serial
> command / macro. Is
> this going to happen soon? Another way would be to have the
> RX equalizer
> settings stored by mode so they could be different for USB
> and LSB. Is this
> going to happen soon? Am I really asking too much here? I
> spent money
> getting the 8 pole 2.8kHz filter hoping it would solve the
> tonality
> difference between USB and LSB, but achieved nothing.
> Recently there was
> somebody on here wishing that Elecraft would sort these
> filters weeding out
> the ones with a bad tilt. Should I order another one hoping
> to get one with
> a flatter response?
>
> AB2TC - Knut
>

k6dgw

Re: K3 for AM broadcast?

In reply to this post by Phillip Lontz

On 12/12/2010 3:59 PM, Phil Townsend wrote:
> I have a friend in Mali that wants to set up an AM radio some were
> out in the boonies. No Reliable AC power etc etc third world problems
> import duty tax endless very red tape.

So, when do we get to the bad news? :-)

So the question is.... Can the
> K3 be made to transmit in the 1600 kc freq?

I don't know that, it can be made to hit MARS and EMCOMM frequencies.

25 to 50 watts.

I believe on AM it is good for 25 watts ICAS. Don't know about CCS
duty. Also not sure how "CCS" your Mali friend needs to be.

Is this even a reasonable idea?

Ummmm ... I can think of some better and cheaper ones, maybe starting
with a 1600 KHz crystal oscillator driving a couple of loafing 807's
plate modulated by another couple of 807's? I might be able to find the
tubes [or 1625's] down in the tube box in the basement.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org
______________________________________________________________
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Don Wilhelm-4

Re: K3 for AM broadcast?

In reply to this post by Phillip Lontz

Phil,

It sounds like he wants a restored Johnson Ranger with the VFO padded
down to 1600 kHz.
Definitely more economical than a K3.

Yes, I believe the K3 can do it, but I do not know for certain.

73,
Don W3FPR

On 12/12/2010 6:59 PM, Phil Townsend wrote:
> I have a friend in Mali that wants to set up an AM radio some were out in the boonies.
> No Reliable AC power etc etc third world problems import duty tax endless very red tape.
> So the question is....
> Can the K3 be made to transmit in the 1600 kc freq?
> 25 to 50 watts.
> Is this even a reasonable idea?
>
______________________________________________________________
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

ac0h

Re: K3 for AM broadcast?

In reply to this post by Phillip Lontz

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Not even in the same neighborhood as reasonable.
I'm pretty sure the boys in Aptos wouldn't want one of their products
used as some sort of pirate AM station in deepest darkest Africa.

On 12/12/2010 5:59 PM, Phil Townsend wrote:
> I have a friend in Mali that wants to set up an AM radio some were out in the boonies.
> No Reliable AC power etc etc third world problems import duty tax endless very red tape.
> So the question is....
> Can the K3 be made to transmit in the 1600 kc freq?
> 25 to 50 watts.
> Is this even a reasonable idea?
>
> Sent from my iPad

- --
R. Kevin Stover

ACØH
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______________________________________________________________
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Mel

Re: K3 for AM broadcast?

With so much information and products out there for OUR PART 15 products and all
of the stuff offered on eBay for low power AM and FM, WHY would you want to
modify a wonderful and dedicated amateur radio????????????? Be Real.

Mel

________________________________
From: R. Kevin Stover <[hidden email]>
To: Phil Townsend <[hidden email]>
Cc: "[hidden email]" <[hidden email]>
Sent: Sun, December 12, 2010 5:24:03 PM
Subject: Re: [Elecraft] K3 for AM broadcast?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Not even in the same neighborhood as reasonable.
I'm pretty sure the boys in Aptos wouldn't want one of their products
used as some sort of pirate AM station in deepest darkest Africa.

On 12/12/2010 5:59 PM, Phil Townsend wrote:

> I have a friend in Mali that wants to set up an AM radio some were out in the
>boonies.
> No Reliable AC power etc etc third world problems import duty tax endless very
>red tape.
> So the question is....
> Can the K3 be made to transmit in the 1600 kc freq?
> 25 to 50 watts.
> Is this even a reasonable idea?
>
> Sent from my iPad

- --
R. Kevin Stover

ACØH
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Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

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=turf
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______________________________________________________________
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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Steve Ellington

Re: K3 for AM broadcast?

You will need the K3BCTX board. There has been a delay in production
however.

N4LQ
Steve

----- Original Message -----
From: "Mel Farrer" <[hidden email]>
To: "R. Kevin Stover" <[hidden email]>; "Phil Townsend" <[hidden email]>
Cc: <[hidden email]>
Sent: Sunday, December 12, 2010 8:53 PM
Subject: Re: [Elecraft] K3 for AM broadcast?

With so much information and products out there for OUR PART 15 products and
all
of the stuff offered on eBay for low power AM and FM, WHY would you want to
modify a wonderful and dedicated amateur radio????????????? Be Real.

Mel

________________________________
From: R. Kevin Stover <[hidden email]>
To: Phil Townsend <[hidden email]>
Cc: "[hidden email]" <[hidden email]>
Sent: Sun, December 12, 2010 5:24:03 PM
Subject: Re: [Elecraft] K3 for AM broadcast?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Not even in the same neighborhood as reasonable.
I'm pretty sure the boys in Aptos wouldn't want one of their products
used as some sort of pirate AM station in deepest darkest Africa.

On 12/12/2010 5:59 PM, Phil Townsend wrote:

> I have a friend in Mali that wants to set up an AM radio some were out in
> the
>boonies.
> No Reliable AC power etc etc third world problems import duty tax endless
> very
>red tape.
> So the question is....
> Can the K3 be made to transmit in the 1600 kc freq?
> 25 to 50 watts.
> Is this even a reasonable idea?
>
> Sent from my iPad

n7ws

Re: K3 for AM broadcast?

In reply to this post by Mel

Why concern about how other people spend their money?

Maybe the guy is going to do a short broadcasting gig, then give out some TZ RTTY QSOs on 20-meters and move on to 7O and give me a new one.

Wes N7WS

--- On Sun, 12/12/10, Mel Farrer <[hidden email]> wrote:

> From: Mel Farrer <[hidden email]>
> Subject: Re: [Elecraft] K3 for AM broadcast?
> To: "R. Kevin Stover" <[hidden email]>, "Phil Townsend" <[hidden email]>
> Cc: "[hidden email]" <[hidden email]>
> Date: Sunday, December 12, 2010, 6:53 PM
> With so much information and products
> out there for OUR PART 15 products and all
> of the stuff offered on eBay for low power AM and FM, WHY
> would you want to
> modify a wonderful and dedicated amateur
> radio????????????? Be Real.
>
>
> Mel
>
>
>
>
>
> ________________________________
> From: R. Kevin Stover <[hidden email]>
> To: Phil Townsend <[hidden email]>
> Cc: "[hidden email]"
> <[hidden email]>
> Sent: Sun, December 12, 2010 5:24:03 PM
> Subject: Re: [Elecraft] K3 for AM broadcast?
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Not even in the same neighborhood as reasonable.
> I'm pretty sure the boys in Aptos wouldn't want one of
> their products
> used as some sort of pirate AM station in deepest darkest
> Africa.
>
> On 12/12/2010 5:59 PM, Phil Townsend wrote:
> > I have a friend in Mali that wants to set up an AM
> radio some were out in the
> >boonies.
> > No Reliable AC power etc etc third world problems
> import duty tax endless very
> >red tape.
> > So the question is....
> > Can the K3 be made to transmit in the 1600 kc freq?
> > 25 to 50 watts.
> > Is this even a reasonable idea?
> >
> > Sent from my iPad
>
>
> - --
> R. Kevin Stover
>
> ACØH
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.10 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>
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> =turf
> -----END PGP SIGNATURE-----
>
>
>
>
> ______________________________________________________________
> 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: K3 for AM broadcast?

In reply to this post by ac0h

CONTENTS DELETED

The author has deleted this message.

daleputnam

Re: K3 for AM broadcast?

Sounds like the job for a Johnson or Heathkit... like the DX100, or Viking... driving a pair of 813s...
works good, last long time.. till water hits the bottles.
Then it no ticky no more.

--... ...-- Dale - WC7S in Wy

> From: [hidden email]
> To: [hidden email]
> Date: Sun, 12 Dec 2010 19:19:36 -0800
> Subject: Re: [Elecraft] K3 for AM broadcast?
>
> A single frequency AM transmitter is so "hammer simple" for anyone who knows
> anything about transmitters to assemble from parts (or old e-junk) it seems
> absurd to take something like the K3 for that job.
>
> If the person involves isn't competent to build a transmitter, he/she will
> never keep one operating under the primitive conditions you describe.
>
> Ron AC7AC
>
> -----Original Message-----
>
> Hash: SHA1
>
> Not even in the same neighborhood as reasonable.
> I'm pretty sure the boys in Aptos wouldn't want one of their products used
> as some sort of pirate AM station in deepest darkest Africa.
>
> On 12/12/2010 5:59 PM, Phil Townsend wrote:
> > I have a friend in Mali that wants to set up an AM radio some were out in
> the boonies.
> > No Reliable AC power etc etc third world problems import duty tax endless
> very red tape.
> > So the question is....
> > Can the K3 be made to transmit in the 1600 kc freq?
> > 25 to 50 watts.
> > Is this even a reasonable idea?
> >
> > Sent from my iPad
>
>
> - --
> R. Kevin Stover
>
> ACØH
>
> ______________________________________________________________
> 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

Phil Hystad-3

Re: K3 for AM broadcast?

In reply to this post by AC7AC

I agree. Single frequency removes a lot of the hassles of a TX of any sort.
And, AM besides you don't have any of the hassles of filters and whatever
for SSB. Is it more then an oscillator, audio amplifier, modulation transformer,
and RF PA

On Dec 12, 2010, at 7:19 PM, Ron D'Eau Claire wrote:

> A single frequency AM transmitter is so "hammer simple" for anyone who knows
> anything about transmitters to assemble from parts (or old e-junk) it seems
> absurd to take something like the K3 for that job.
>
> If the person involves isn't competent to build a transmitter, he/she will
> never keep one operating under the primitive conditions you describe.
>
> Ron AC7AC
>
> -----Original Message-----
>
> Hash: SHA1
>
> Not even in the same neighborhood as reasonable.
> I'm pretty sure the boys in Aptos wouldn't want one of their products used
> as some sort of pirate AM station in deepest darkest Africa.
>
> On 12/12/2010 5:59 PM, Phil Townsend wrote:
>> I have a friend in Mali that wants to set up an AM radio some were out in
> the boonies.
>> No Reliable AC power etc etc third world problems import duty tax endless
> very red tape.
>> So the question is....
>> Can the K3 be made to transmit in the 1600 kc freq?
>> 25 to 50 watts.
>> Is this even a reasonable idea?
>>
>> Sent from my iPad
>
>
> - --
> R. Kevin Stover
>
> ACØH
>
> ______________________________________________________________
> 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

k.igor

Re: K3 for AM broadcast?

In reply to this post by Phillip Lontz

What makes K3 is 90% receiver and 10% transmitter (IMHO). Last time I
checked, broadcast stations do not need to receive. What you need is crops
duster, K3 is supersonic jet. Kind of out of proportion, so no, this is not
a reasonable idea.

73,
Igor, N1YX

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Phil Townsend
Sent: Sunday, December 12, 2010 6:59 PM
Cc: [hidden email]
Subject: [Elecraft] K3 for AM broadcast?

I have a friend in Mali that wants to set up an AM radio some were out in
the boonies.
No Reliable AC power etc etc third world problems import duty tax endless
very red tape.
So the question is....
Can the K3 be made to transmit in the 1600 kc freq?
25 to 50 watts.
Is this even a reasonable idea?

Sent from my iPad

On Dec 12, 2010, at 3:18 PM, ab2tc <[hidden email]> wrote:

>
> Hi again,
>
> A little while ago I wrote the message below. I am still searching for
ways
> to compensate for the tilt in my new 2.8kHz crystal filter. One way would
be
> to have a way to set the RX equalizer through a serial command / macro. Is
> this going to happen soon? Another way would be to have the RX equalizer
> settings stored by mode so they could be different for USB and LSB. Is
this
> going to happen soon? Am I really asking too much here? I spent money
> getting the 8 pole 2.8kHz filter hoping it would solve the tonality
> difference between USB and LSB, but achieved nothing. Recently there was
> somebody on here wishing that Elecraft would sort these filters weeding
out
> the ones with a bad tilt. Should I order another one hoping to get one
with

> a flatter response?
>
> AB2TC - Knut
>
> Hello all,
>
> I recently replaced the 5-pole 2.7kHz roofing filter in my K3 with the
> 8-pole 2.8kHz hoping to get rid of the difference in tonality between USB
> and LSB. But the difference is still there. These two links show the noise
> spectrum of the receiver in USB and LSB.
>
> http://ab2tc.getmyip.com:8000/pictures/usb.png
> http://ab2tc.getmyip.com:8000/pictures/lsb.png
>
> In USB there is a definite upward tilt of the passband and the opposite

for
> LSB. This is quite audible. Is this normal and is there anything I can do
> about it (other than asking Elecraft to add by mode equalizer)?
>
> AB2TC - Knut
>
> --
> View this message in context:
http://elecraft.365791.n2.nabble.com/2-8-kHz-filter-tilt-tp5829094p5829094.h
tml
> Sent from the [K3] mailing list archive at Nabble.com.
> ______________________________________________________________
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Jim Cox

Re: K3 for AM broadcast?

In reply to this post by n7ws

Another long running thread directly related to Elecraft?????

Jim K4JAF

----- Original Message -----
From: "Wes Stewart" <[hidden email]>
To: "Phil Townsend" <[hidden email]>
Cc: <[hidden email]>
Sent: Sunday, December 12, 2010 8:28 PM
Subject: Re: [Elecraft] K3 for AM broadcast?

Why concern about how other people spend their money?

Maybe the guy is going to do a short broadcasting gig, then give out some TZ
RTTY QSOs on 20-meters and move on to 7O and give me a new one.

Wes N7WS

--- On Sun, 12/12/10, Mel Farrer <[hidden email]> wrote:

> From: Mel Farrer <[hidden email]>
> Subject: Re: [Elecraft] K3 for AM broadcast?
> To: "R. Kevin Stover" <[hidden email]>, "Phil Townsend"
> <[hidden email]>
> Cc: "[hidden email]" <[hidden email]>
> Date: Sunday, December 12, 2010, 6:53 PM
> With so much information and products
> out there for OUR PART 15 products and all
> of the stuff offered on eBay for low power AM and FM, WHY
> would you want to
> modify a wonderful and dedicated amateur
> radio????????????? Be Real.
>
>
> Mel
>
>
>
>
>
> ________________________________
> From: R. Kevin Stover <[hidden email]>
> To: Phil Townsend <[hidden email]>
> Cc: "[hidden email]"
> <[hidden email]>
> Sent: Sun, December 12, 2010 5:24:03 PM
> Subject: Re: [Elecraft] K3 for AM broadcast?
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Not even in the same neighborhood as reasonable.
> I'm pretty sure the boys in Aptos wouldn't want one of
> their products
> used as some sort of pirate AM station in deepest darkest
> Africa.
>
> On 12/12/2010 5:59 PM, Phil Townsend wrote:
> > I have a friend in Mali that wants to set up an AM
> radio some were out in the
> >boonies.
> > No Reliable AC power etc etc third world problems
> import duty tax endless very
> >red tape.
> > So the question is....
> > Can the K3 be made to transmit in the 1600 kc freq?
> > 25 to 50 watts.
> > Is this even a reasonable idea?
> >
> > Sent from my iPad
>
>
> - --
> R. Kevin Stover
>
> ACØH
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.10 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>
> iQEcBAEBAgAGBQJNBXWzAAoJEAu8BkU0m9MnIU0H/ij35EkRL5SNOLP85N2kPlIV
> 71E6GL3Fy/6RPcXACbLuTVw345gF0sWOF0OCqcRHv2MeOO/XsPEt/Ih2QJRTXdz+
> PrJ3hmndWVvmd4ecmZ4jWIdtz9lqXRtzJ1HTQq/AAKPqygTgKyOZlKjZJ5ZoU3jH
> MGxmmKQ0Uoo4ykLUvxq0RwHToN8eBXXY2JpPSBUHSPvZyCyaBKoidi9p6SZzltFG
> h3L63CdG7kO5C3UiUzOPk7FLTbv4MGIDjwGer5lcG5MdU1BO96QzVoldFFVje1eI
> q5jzWLRF4GWczr0eYuPX5mPdc7SZMMj8n0cUvbJWJwZ2fK2dwx0yfwhxcZksVoc=
> =turf
> -----END PGP SIGNATURE-----
>
>
>
>
> ______________________________________________________________
> 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
>

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N5GE

Re: K3 for AM broadcast?

I agree. After the answer about using the K3 was answered there was no reason to
continue the thread.

Why not take this off line, or to a reflector group that specializes in
clandestine AM Broadcasting?

73,

Tom Childers
Radio Amateur N5GE
Licensed since 1976
QCWA Member 35102
ARRL Life Member

On Mon, 13 Dec 2010 07:18:49 -0600, "Jim Cox" <[hidden email]> wrote:

>Another long running thread directly related to Elecraft?????
>
>Jim K4JAF
>
>
[snip]

______________________________________________________________
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Amateur Radio Operator N5GE

Lu Romero - W4LT

Re: K3 for AM broadcast?

In reply to this post by Phillip Lontz

Kevin:

A much better solution to this need is this:

http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=AM25

It will put out one watt with some strategic circuit trace
snips. You will need an amplifier to raise the power level
to your requirement. Many companies abound (especialy in
Italy) to help you get QRO for this exciter :)

Stay solid state, so that when your friend is told by the
officials he has bribed in the local government that the
militia is coming to take him off the air, he can pack the
stuff up and move to somewhere else in the jungle quickly.

That's all the "Clandestine Broadcast Consulting" you get
for free :)

73

Lu Romero - W4LT
K3 # 3192

> ________________________________
> From: R. Kevin Stover <[hidden email]>
> To: Phil Townsend <[hidden email]>
> Cc: "[hidden email]"
> <[hidden email]>
> Sent: Sun, December 12, 2010 5:24:03 PM
> Subject: Re: [Elecraft] K3 for AM broadcast?
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Not even in the same neighborhood as reasonable.
> I'm pretty sure the boys in Aptos wouldn't want one of
> their products
> used as some sort of pirate AM station in deepest darkest
> Africa.
>
> On 12/12/2010 5:59 PM, Phil Townsend wrote:
> > I have a friend in Mali that wants to set up an AM
> radio some were out in the
> >boonies.
> > No Reliable AC power etc etc third world problems
> import duty tax endless very
> >red tape.
> > So the question is....
> > Can the K3 be made to transmit in the 1600 kc freq?
> > 25 to 50 watts.
> > Is this even a reasonable idea?
> >
> > Sent from my iPad
>
>
> - --
> R. Kevin Stover

Paul-285

Re: K3 for AM broadcast?

In reply to this post by AC7AC

Just ixquick "low power am transmitter"

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