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K4 SDR version

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Ralph S

K4 SDR version

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rich hurd WC3T

Re: K4 SDR version

[SLIGHTLY OFF TOPIC WARNING]

This is not the first time I've seen an email with zero content, just a
clause as a subject. And this is not the first venue I've seen it on.

Is this a thing? I have no idea what the original poster is going on
about. There's absolutely nothing you can infer from this subject line.

I know, I could just hit "delete" or spin the dial and I'll end up doing
that. But come on folks. Spend some time crafting an email that is
readable and understandable and you'll get better answers. And people will
definitely get a better impression of your ability to form a sentence in
the King's English.

Rant over.

On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK <[hidden email]> wrote:

>
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--
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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Dave wo2x

Re: K4 SDR version

I think it is when the original poster’s email client is posting as HTML content.

Dave wo2x

Sent from my waxed string and tin cans.

> On Jul 23, 2019, at 11:53 AM, rich hurd WC3T <[hidden email]> wrote:
>
> [SLIGHTLY OFF TOPIC WARNING]
>
> This is not the first time I've seen an email with zero content, just a
> clause as a subject. And this is not the first venue I've seen it on.
>
> Is this a thing? I have no idea what the original poster is going on
> about. There's absolutely nothing you can infer from this subject line.
>
> I know, I could just hit "delete" or spin the dial and I'll end up doing
> that. But come on folks. Spend some time crafting an email that is
> readable and understandable and you'll get better answers. And people will
> definitely get a better impression of your ability to form a sentence in
> the King's English.
>
> Rant over.
>
>
>> On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK <[hidden email]> wrote:
>>
>>
>> ______________________________________________________________
>> 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]
>>
>
>
> --
> 72,
> Rich Hurd / WC3T / DMR: 3142737
> Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
> Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid:
> *FN20is*
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

Grant Youngman-2

Re: K4 SDR version

In reply to this post by rich hurd WC3T

Probably HTML. Or maybe RTF (don’t know if RTF makes it through or not)

Grant NQ5T
K3 #2091 KX3 #8342

>
> This is not the first time I've seen an email with zero content, just a
> clause as a subject. And this is not the first venue I've seen it on.
>

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rich hurd WC3T

Re: K4 SDR version

I've seen it on places like Facebook also. I hope it's technical and not
stylistic.

On Tue, Jul 23, 2019 at 11:58 AM Grant Youngman <[hidden email]>
wrote:

> Probably HTML. Or maybe RTF (don’t know if RTF makes it through or not)
>
> Grant NQ5T
> K3 #2091 KX3 #8342
>
> >
> > This is not the first time I've seen an email with zero content, just a
> > clause as a subject. And this is not the first venue I've seen it on.
> >
>
>

Ralph S

Fwd: K4 SDR version

In reply to this post by Ralph S

> Greetings
>
>
> I live between 2 AM Broadcast stations. First Station KVOI 1030 AM @ 10 KW day, 1kw night 2 miles south.
>
>
> Second StationKUAT 1550 AM @ 50KW day time only. No night time power 2 miles north.
>
>
> My question is how well will the K4 perform in this environment The only problem with the K 3 is caused
>
>
> by rusty fences etc radiating a mix between stations. Day time 75 -80 not usable some of the time.
>
>
> This is not a overload problem, just spurs.
>
>
> Ralph, W7HSG
>
>
> 520-444-6610
>
>
>

Joe Subich, W4TV-4

Re: Fwd: K4 SDR version

On 2019-07-23 12:54 PM, RALPH TURK wrote:
>> My question is how well will the K4 perform in this environment

If the mixing is occurring external to your transceiver - you say:

>> The only problem with the K 3 is caused by rusty fences etc
>> radiating a mix between stations.

The K4 will perform the same as the K3 as once the spurs are created
externally there is nothing the transceiver can do to reject them.

73,

... Joe, W4TV

On 2019-07-23 12:54 PM, RALPH TURK wrote:

>> Greetings
>>
>>
>> I live between 2 AM Broadcast stations. First Station KVOI 1030 AM @ 10 KW day, 1kw night 2 miles south.
>>
>>
>> Second StationKUAT 1550 AM @ 50KW day time only. No night time power 2 miles north.
>>
>>
>> My question is how well will the K4 perform in this environment The only problem with the K 3 is caused
>>
>>
>> by rusty fences etc radiating a mix between stations. Day time 75 -80 not usable some of the time.
>>
>>
>> This is not a overload problem, just spurs.
>>
>>
>> Ralph, W7HSG
>>
>>
>> 520-444-6610
>>
>>
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> 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]
>

Ralph S

Re: Fwd: K4 SDR version

Thanks Joe
I am more concerned if the SDR front end will be overloaded.
The spurs are a work in progress. If it rained once a week,
I would not have any spurs.
Ralph

> On July 23, 2019 at 12:31 PM "Joe Subich, W4TV" <[hidden email]> wrote:
>
>
>
> On 2019-07-23 12:54 PM, RALPH TURK wrote:
> >> My question is how well will the K4 perform in this environment
>
> If the mixing is occurring external to your transceiver - you say:
>
> >> The only problem with the K 3 is caused by rusty fences etc
> >> radiating a mix between stations.
>
> The K4 will perform the same as the K3 as once the spurs are created
> externally there is nothing the transceiver can do to reject them.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 2019-07-23 12:54 PM, RALPH TURK wrote:
> >> Greetings
> >>
> >>
> >> I live between 2 AM Broadcast stations. First Station KVOI 1030 AM @ 10 KW day, 1kw night 2 miles south.
> >>
> >>
> >> Second StationKUAT 1550 AM @ 50KW day time only. No night time power 2 miles north.
> >>
> >>
> >> My question is how well will the K4 perform in this environment The only problem with the K 3 is caused
> >>
> >>
> >> by rusty fences etc radiating a mix between stations. Day time 75 -80 not usable some of the time.
> >>
> >>
> >> This is not a overload problem, just spurs.
> >>
> >>
> >> Ralph, W7HSG
> >>
> >>
> >> 520-444-6610
> >>
> >>
> >>
> > ______________________________________________________________
> > 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
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> Message delivered to [hidden email]

Lynn W. Taylor, WB6UUT-3

Blank E-Mails (was Re: K4 SDR version)

In reply to this post by rich hurd WC3T

Because it's possible to do all kinds of evil things through HTML, this
list, and many others simply remove everything that is HTML encoded.

Unfortunately, HTML is the default in most mail clients.

On 7/23/2019 8:53 AM, rich hurd WC3T wrote:

> [SLIGHTLY OFF TOPIC WARNING]
>
> This is not the first time I've seen an email with zero content, just a
> clause as a subject. And this is not the first venue I've seen it on.
>
> Is this a thing? I have no idea what the original poster is going on
> about. There's absolutely nothing you can infer from this subject line.
>
> I know, I could just hit "delete" or spin the dial and I'll end up doing
> that. But come on folks. Spend some time crafting an email that is
> readable and understandable and you'll get better answers. And people will
> definitely get a better impression of your ability to form a sentence in
> the King's English.
>
> Rant over.
>
>
> On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK <[hidden email]> wrote:
>
>>
>> ______________________________________________________________
>> 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]
>>
>
>

Wes Stewart-2

Re: Fwd: K4 SDR version

In reply to this post by Ralph S

Ralph,

KVOI is -7 dBm here on my 40-meter dipole. On the 160 antenna it's about 3 dB
higher but that's folded over for the lightning season, Despite running 7 dB
more power and not being a much different distance KUAZ is about 13 dB weaker.
I guess that's why the commercial owner gave it to the U of A, took a tax write
off and lets the taxpayers fund it. KFLF, (50 KW) further away still is -6 dBm.

My SDR-IQs handle this just fine. I briefly owned an RSP-2 Pro that folded up
like a cheap suitcase and was unusable on any frequency and it supposedly has a
BCB filter. I suspect that the K4 will be unfazed.

Wes N7WS

On 7/23/2019 9:54 AM, RALPH TURK wrote:

rich hurd WC3T

Re: Blank E-Mails (was Re: K4 SDR version)

In reply to this post by Lynn W. Taylor, WB6UUT-3

I have apologized privately to the poster and here I will put on my hair
shirt and flog myself with a length of coax. I’ve seen this behavior,
albeit on web based forums, and just assumed laziness rather than other
causes. Just shows you can teach an old dog new tricks.

Don’t sic Eric on me. :) Let’s end this here.

On Tue, Jul 23, 2019 at 17:01 Lynn W. Taylor, WB6UUT <
[hidden email]> wrote:

> Because it's possible to do all kinds of evil things through HTML, this
> list, and many others simply remove everything that is HTML encoded.
>
> Unfortunately, HTML is the default in most mail clients.
>
> On 7/23/2019 8:53 AM, rich hurd WC3T wrote:
> > [SLIGHTLY OFF TOPIC WARNING]
> >
> > This is not the first time I've seen an email with zero content, just a
> > clause as a subject. And this is not the first venue I've seen it on.
> >
> > Is this a thing? I have no idea what the original poster is going on
> > about. There's absolutely nothing you can infer from this subject line.
> >
> > I know, I could just hit "delete" or spin the dial and I'll end up doing
> > that. But come on folks. Spend some time crafting an email that is
> > readable and understandable and you'll get better answers. And people
> will
> > definitely get a better impression of your ability to form a sentence in
> > the King's English.
> >
> > Rant over.
> >
> >
> > On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK <[hidden email]> wrote:
> >
> >>
> >> ______________________________________________________________
> >> 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]
>

Jim Brown-10

Re: Fwd: K4 SDR version

In reply to this post by Wes Stewart-2

Hi Wes,

I looked them up on the FCC AM Query page.
https://www.fcc.gov/media/radio/am-query

The "intermediate detail" listing is the most useful. KFLF is not in
the database, but KFLT is.

In addition to power, three other factors affect signal strength. 1)
Attenuation by groundwave increases a LOT with frequency. KVOI is on the
low end of the band, KUAZ on the high end. It is so strongly
frequency-dependent that the FCC technical regs publish ground wave
curves for every 100 kHz or so. 2) Antenna directivity. All three are
non-directional daytime, but KFLT is directional at night. 3) Antenna
height. And, BTW, while KVOI runs 10kW daytime, their license is for 1kW
night.

When you get a line listing, click on the call to get technical details.
For KFLT, click on the "Electrical Field Strength pattern plot (PDF)" to
see the antenna's pattern.

73, Jim K9YC

On 7/23/2019 2:58 PM, Wes wrote:
> KVOI is -7 dBm here on my 40-meter dipole. On the 160 antenna it's
> about 3 dB higher but that's folded over for the lightning season,
> Despite running 7 dB more power and not being a much different
> distance KUAZ is about 13 dB weaker. I guess that's why the
> commercial owner gave it to the U of A, took a tax write off and lets
> the taxpayers fund it. KFLF, (50 KW) further away still is -6 dBm.

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Wes Stewart-2

Re: Fwd: K4 SDR version

In reply to this post by Wes Stewart-2

I should add that KVOI runs a directional antenna with the (crazy) pattern peak
pointed in my direction. Why escapes me, as there is no one to service in my
direction.

On 7/23/2019 2:58 PM, Wes wrote:

> Ralph,
>
> KVOI is -7 dBm here on my 40-meter dipole. On the 160 antenna it's about 3 dB
> higher but that's folded over for the lightning season, Despite running 7 dB
> more power and not being a much different distance KUAZ is about 13 dB
> weaker. I guess that's why the commercial owner gave it to the U of A, took a
> tax write off and lets the taxpayers fund it. KFLF, (50 KW) further away
> still is -6 dBm.
>
> My SDR-IQs handle this just fine. I briefly owned an RSP-2 Pro that folded up
> like a cheap suitcase and was unusable on any frequency and it supposedly has
> a BCB filter. I suspect that the K4 will be unfazed.
>
>
> Wes N7WS
>
> On 7/23/2019 9:54 AM, RALPH TURK wrote:
>>> Greetings
>>>
>>>
>>> I live between 2 AM Broadcast stations. First Station KVOI 1030 AM @ 10
>>> KW day, 1kw night 2 miles south.
>>>
>>>
>>> Second StationKUAT 1550 AM @ 50KW day time only. No night time power 2
>>> miles north.
>>>
>>>
>>> My question is how well will the K4 perform in this environment The only
>>> problem with the K 3 is caused
>>>
>>>
>>> by rusty fences etc radiating a mix between stations. Day time 75 -80 not
>>> usable some of the time.
>>>
>>>
>>> This is not a overload problem, just spurs.
>>>
>>>
>>> Ralph, W7HSG
>

Joe Subich, W4TV-4

Re: Fwd: K4 SDR version

On 2019-07-23 7:42 PM, Wes wrote:
> Why escapes me, as there is no one to service in my direction.

Typically AM patterns are designed to put nulls in the direction
of stations that a secondary user of a frequency must protect.
From the list of stations on 1030, I suspect KVOI is required to
protect WBZ (Boston), KTWO (Casper WY) and possibly XEQR (Mexico
City).

Looking at the protection requirements along with what is possible
when it comes to antenna patterns will often lead one to understand
the reason for "crazy" patterns (particularly nigh time patterns).

73,

... Joe, W4TV

On 2019-07-23 7:42 PM, Wes wrote:

> I should add that KVOI runs a directional antenna with the (crazy)
> pattern peak pointed in my direction. Why escapes me, as there is no
> one to service in my direction.
>
>
> On 7/23/2019 2:58 PM, Wes wrote:
>> Ralph,
>>
>> KVOI is -7 dBm here on my 40-meter dipole. On the 160 antenna it's
>> about 3 dB higher but that's folded over for the lightning season,
>> Despite running 7 dB more power and not being a much different
>> distance KUAZ is about 13 dB weaker. I guess that's why the
>> commercial owner gave it to the U of A, took a tax write off and lets
>> the taxpayers fund it. KFLF, (50 KW) further away still is -6 dBm.
>>
>> My SDR-IQs handle this just fine. I briefly owned an RSP-2 Pro that
>> folded up like a cheap suitcase and was unusable on any frequency and
>> it supposedly has a BCB filter. I suspect that the K4 will be unfazed.
>>
>>
>> Wes N7WS
>>

Jim Brown-10

Re: Fwd: K4 SDR version

In reply to this post by Wes Stewart-2

Actually different patterns day and night.
https://transition.fcc.gov/fcc-bin/amq?list=0&facid=13969

73, Jim K9YC

On 7/23/2019 4:42 PM, Wes wrote:
> I should add that KVOI runs a directional antenna with the (crazy)
> pattern peak pointed in my direction. Why escapes me, as there is no
> one to service in my direction.

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Jim Brown-10

Re: Fwd: K4 SDR version

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

On 7/23/2019 5:10 PM, Joe Subich, W4TV wrote:
> Typically AM patterns are designed to put nulls in the direction
> of stations that a secondary user of a frequency must protect.

One of my coop jobs from the University of Cincinnati was working in the
engineering office of a broadcast consultant designing those arrays.
Several decades ago, the AM Rules were revised to greatly reduce the
protection given to Clear Channel stations like WBZ.

73, Jim K9YC

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Wes Stewart-2

Re: Fwd: K4 SDR version

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

I understand that, however the weird pattern is daytime and nulls some of their
service area. I doubt they are protecting any of those stations, especially as I
understand it protection only extends 750 miles anyway.. The nighttime pattern
is more-or-less a cardioid, without any deep nulls, and pointed south toward
downtown.

Wes N7WS

On 7/23/2019 5:10 PM, Joe Subich, W4TV wrote:

> On 2019-07-23 7:42 PM, Wes wrote:
>> Why escapes me, as there is no one to service in my direction.
>
> Typically AM patterns are designed to put nulls in the direction
> of stations that a secondary user of a frequency must protect.
> From the list of stations on 1030, I suspect KVOI is required to
> protect WBZ (Boston), KTWO (Casper WY) and possibly XEQR (Mexico
> City).
>
> Looking at the protection requirements along with what is possible
> when it comes to antenna patterns will often lead one to understand
> the reason for "crazy" patterns (particularly nigh time patterns).
>
> 73,
>
> ... Joe, W4TV