Date   

Re: 40M Net

WA0ITP
 

Thanks Chas.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 8/14/2019 9:12 PM, w2sh@... wrote:

Terry,

Perhaps your notes show the calling station was KB1PJ.  I tried to chase him away by sending QRL.  Later, I wanted to try my luck on 80m, but doggone it there was the same KB1PJ calling.

Well I've checked the 4SQRP membership list, and lo and behold KB1PJ is 4SQRP member # 1885.

I'll send him a note apologizing for my earlier chase-off attempts.

End result:  I didn't hear either net well enough to venture a QNI.

72,

Charles, W2SH


TONIGHT'S DMR NET

Robert
 

THANKS TO ALL WHO CHECKED INTO THE NET, TONIGHT'S CHECK IN'S

NK8O CHARLES

N0MII JEFF

WG5F ED

N0SO MIKE

N0TGR DICK

KB0MOE DON

AC0BQ JOHNNY

K0VAB VIC

AND I HEARD TERRY WAOITP, BUT COULD NOT CONNECT WITH HIM


73'S

HOPE TO HEAR YOU ALL NEXT WEEK.


BERT

N0YJ


Re: 40M Net

w2sh@...
 

Terry,

Perhaps your notes show the calling station was KB1PJ.  I tried to chase him away by sending QRL.  Later, I wanted to try my luck on 80m, but doggone it there was the same KB1PJ calling.

Well I've checked the 4SQRP membership list, and lo and behold KB1PJ is 4SQRP member # 1885.

I'll send him a note apologizing for my earlier chase-off attempts.

End result:  I didn't hear either net well enough to venture a QNI.

72,

Charles, W2SH


80 M NET

Johnny AC0BQ
 

Ge Group
Pretty good turn out tonight considering the band is pretty weak.

Check In's were:
KL7IXI MIKE
WA0ITP TERRY
N0YJ BERT
N4KV JOHN
and
K0FHG BOB

Tnx 72
cu all next week

--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ ..


40M Net

WA0ITP
 

I had to move to 7123 due to a station calling CQ, and then another station right at 8P. So  checkins were scarce.  Next week I'll begin calling at 7:55 to grab the frequency first, hope you all will begin cheking in a few minutes early.
 
Making it in were


Thanks to MArk and John for making it in.
-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


Wednesday Evening 40 and 80 meter Nets - Wed, 08/14/2019 #cal-notice

main@4SQRP.groups.io Calendar <noreply@...>
 

Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 14 August 2019
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Organizer:
jomatlock@...

Description:
The 40 Meter Net will be at 8:00 pm DST central time  on 7.122 +-. QRM
NCS is WQ5RP Terry.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central DST Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: Exploring the 4SQRP Group "Member Map" tab

W6BOW
 

Ron - AG1P,

No problem. As I stated before, "Everything in its own time".

What got me interested in the first place was my intention to somehow "map" some of the 4SQRP group of regulars.
Your "Members Map" does this and much more.

I've built and am having excellent success with the Hilltopper20.
My "bucket list" includes "OzarkCon" and "Brutis Bash".

Ron, thank you for your interest and quick response.

Again ...

"Everything in its own time"
...and ...
"I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade."

73

DON  W6BOW
San Francisco  CA  USA


-----Original Message-----
From: AG1P Ron <ag1p@...>
To: main <main@4SQRP.groups.io>
Sent: Wed, Aug 14, 2019 9:45 am
Subject: Re: [4SQRP] Exploring the 4SQRP Group "Member Map" tab

GM Don,
Sorry for the delay. Yesterday was long health-related visits day.
 
You are correct. The map is static. The program that generates the map needs a file with GPS information to generate the map . It was generated by someone several years ago.  To add all the new members is a labor intensive task. I have higher priority tasks on my plate so have not looked into better solution or done the heads down work to get gps coordinates for each of the members to be added and update the file.
72 - Ron - AG1P
4SQRP Volunteer Webmaster
 
From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of W6BOW via Groups.Io
Sent: Tuesday, August 13, 2019 5:39 PM
To: main@4sqrp.groups.io
Subject: [4SQRP] Exploring the 4SQRP Group "Member Map" tab
 
Dear All,
 
Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)
A "member's callsign lookup box" would be a great addition.
 
I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.
 
73,
 
Don - W6BOW
San Francisco  CA   USA
 
 


Re: Exploring the 4SQRP Group "Member Map" tab

W6BOW
 

Ray,

No rusg OM. Everything in its own time.

Let me know if/how I can contribute to the updating/maintenance of this very useful page.

Very best to you,

Don  W6BOW
San Francisco  CA  USA




-----Original Message-----
From: Ray Cadmus <rcadmus@...>
To: main <main@4SQRP.groups.io>
Sent: Wed, Aug 14, 2019 11:10 am
Subject: Re: [4SQRP] Exploring the 4SQRP Group "Member Map" tab

Sorry,  hadn't realized that it had been so long.  I will look at getting you an updated location file.  I will also look at possibility of triggering auto-update on new member add.
Ray   W9EUM
--
On 8/14/19 11:44 AM, AG1P Ron wrote:
GM Don,
Sorry for the delay. Yesterday was long health-related visits day.
 
You are correct. The map is static. The program that generates the map needs a file with GPS information to generate the map . It was generated by someone several years ago.  To add all the new members is a labor intensive task. I have higher priority tasks on my plate so have not looked into better solution or done the heads down work to get gps coordinates for each of the members to be added and update the file.
72 - Ron - AG1P
4SQRP Volunteer Webmaster
 
From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of W6BOW via Groups.Io
Sent: Tuesday, August 13, 2019 5:39 PM
To: main@4sqrp.groups.io
Subject: [4SQRP] Exploring the 4SQRP Group "Member Map" tab
 
Dear All,
 
Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)
A "member's callsign lookup box" would be a great addition.
 
I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.
 
73,
 
Don - W6BOW
San Francisco  CA   USA
 
 


Re: Nouveau 75 Errata

hamhog1
 

The photos from the photo page show just the opposite arrangement of the screws for the heat sink.

Gary K4VIG


--
Gary K4VIG


Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 08/14/2019 8:00pm-9:00pm #cal-reminder

main@4SQRP.groups.io Calendar <main@...>
 

Reminder: Wednesday Evening 40 and 80 meter Nets

When: Wednesday, 14 August 2019, 8:00pm to 9:00pm, (GMT-05:00) America/Chicago

Where:40 and 80 Meters

View Event

Organizer: jomatlock@...

Description: The 40 Meter Net will be at 8:00 pm DST central time  on 7.122 +-. QRM
NCS is WQ5RP Terry.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central DST Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: Exploring the 4SQRP Group "Member Map" tab

Ray Cadmus
 

Sorry,  hadn't realized that it had been so long.  I will look at getting you an updated location file.  I will also look at possibility of triggering auto-update on new member add.

Ray   W9EUM

--

On 8/14/19 11:44 AM, AG1P Ron wrote:

GM Don,

Sorry for the delay. Yesterday was long health-related visits day.

 

You are correct. The map is static. The program that generates the map needs a file with GPS information to generate the map . It was generated by someone several years ago.  To add all the new members is a labor intensive task. I have higher priority tasks on my plate so have not looked into better solution or done the heads down work to get gps coordinates for each of the members to be added and update the file.

72 - Ron - AG1P

4SQRP Volunteer Webmaster

 

From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of W6BOW via Groups.Io
Sent: Tuesday, August 13, 2019 5:39 PM
To: main@4sqrp.groups.io
Subject: [4SQRP] Exploring the 4SQRP Group "Member Map" tab

 

Dear All,

 

Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)

A "member's callsign lookup box" would be a great addition.

 

I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.

 

73,

 

Don - W6BOW

San Francisco  CA   USA

 

 


Re: SSS Results for August

Carl Gansen
 

Congratulations to Nick.  We had to work harder than usual to complete the MN to TX
QSO.  Chas was strong on 40M and unheard on 20M here.  The evening was frustrating fun.
72
Carl


Re: Exploring the 4SQRP Group "Member Map" tab

AG1P Ron
 

GM Don,

Sorry for the delay. Yesterday was long health-related visits day.

 

You are correct. The map is static. The program that generates the map needs a file with GPS information to generate the map . It was generated by someone several years ago.  To add all the new members is a labor intensive task. I have higher priority tasks on my plate so have not looked into better solution or done the heads down work to get gps coordinates for each of the members to be added and update the file.

72 - Ron - AG1P

4SQRP Volunteer Webmaster

 

From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of W6BOW via Groups.Io
Sent: Tuesday, August 13, 2019 5:39 PM
To: main@4sqrp.groups.io
Subject: [4SQRP] Exploring the 4SQRP Group "Member Map" tab

 

Dear All,

 

Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)

A "member's callsign lookup box" would be a great addition.

 

I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.

 

73,

 

Don - W6BOW

San Francisco  CA   USA

 

 


Re: Nouveau 75 Errata

nm0s_qrp <ai9e_qrp@...>
 

The manual is correct.  I'll correct the schematic ASAP.


Re: Nouveau 75 Errata

nm0s_qrp <ai9e_qrp@...>
 
Edited

Regarding the observed Q11, Q10 heating, in normal operation these will exhibit no heating at all in the receive mode.
 
What I suspect has happened is that Q11 and Q12 had shorted together with power applied, and damaged some components on the board, resulting in the heating observed.
 
Notice that Q11 and Q12 are close together on the board.  This is why the assembly instructions explicitly specify that the heat sink mounting screws are to be installed through the back of the heat sink, emerging through the tab of the transistor.  This limits the opportunity for the two transistors to come in electrical contact.
 
So to reiterate, the hardware stackup should be screw, passing through flat washer, back of heat sink, black heat sink pad, back of transistor, lock washer, and nut.
 
The three legs on the heat sink should be snipped off.
 
Before soldering the transistor to the board, check the spacing between the heat sink and the board to make certain that the sink does not contact any of the surface mount components on the board.  Readjust the sink on the transistor if necessary.  Only then should you solder the transistor down.
 
Finally, be certain that there is no contact between Q11 and Q12 before power up.
 
That should prevent any of damage to components due to heat sink shorting.
 
73 Dave NM0S


Re: Exploring the 4SQRP Group "Member Map" tab

Ray Cadmus
 

You are correct.  I have not updated the map for some time.  I'll see what I can do.

Just in case someone else might like to undertake an update from time to time I will outline the process that I go through.  There is also the option of simply adding to the location file on the site but that would require that it be made available for download or update.

Anyway...

1 - pull the current fcc data base and place it in something like mysql

2 - parse the member list from the web site to get a simple list of call signs

3 - match that list against the gov db to get addresses

4 - run the address list thru the U-Tex geo site to get location data

5 - put the collected date into a form usable by the open street map

Again, I'll see what I can do but I may be getting too old for this stuff :-)

Regards,

Ray W9EUM (former W0PFO)

--


On 8/13/19 7:39 PM, W6BOW via Groups.Io wrote:
Dear All,

Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)
A "member's callsign lookup box" would be a great addition.

I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.

73,

Don - W6BOW
San Francisco  CA   USA



Re: Exploring the 4SQRP Group "Member Map" tab

John Lonigro
 

Good tip Jeff. The member list is alphabetized so you really don’t need to do a search at all, other than rapidly scrolling down the list and doing an old fashioned visual search. 
72,
John, AA0VE


On Aug 14, 2019, at 6:03 AM, Jeff Logullo N0̸MII <jeff@...> wrote:

One exception to Jim's tip below: if you're trying to search for a "0" (numeric zero) your browser search will fail. You'll need to substitute an "O" (letter O) instead of searching for a zero. What looks like slashed zeros on the Member Map page is actually a Unicode "Latin Capital Letter O with Stroke." So a search for zeros will fail.

Jeff N0̸MII 

On Aug 13, 2019, at 10:21 PM, Jim Pruitt <jpruitt67@...> wrote:

Don if you go to the 4SQRP home page
http://www.4sqrp.com/index.php
and select
"Member List"
http://www.4sqrp.com/w25.php
which is the item above "Member Map" that you mention.  That List will brink up a frame with all the member's calls on it.  Do a browser search (Control F for Firefox/Waterfox) and put in BOW [or W6BOW] it will go to W6BOW (the only Bow on the list).  When you mouse over W6BOW a box pops out that says you are member 1830.  Using the map shows where members are located, their call, and name but in many cases you have to enlarge the map a lot in order to separate members so you can pick one.  It does not list membership number.  The "Member List" page does give you that information though.

Thank you.

Jim Pruitt
WA7DUY


On 8/13/2019 5:39 PM, W6BOW via Groups.Io wrote:
Dear All,

Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)
A "member's callsign lookup box" would be a great addition.

I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.

73,

Don - W6BOW
San Francisco  CA   USA




--
Jeff N0̷MII


Re: The Lightbulb QSO Party

Dick Hammond
 

Good reading Bruce. Dick, notgr


On Tue, Aug 13, 2019, 10:26 PM KK0S <bbarley48@...> wrote:

All -


Be aware that the ohmic resistance of a Tungsten light bulb has a very strong positive temperature coefficient! The resistance of the filament drastically increases as it heats up when power is applied.

Take your ohm meter and measure the filament resistance at room temperature, with no power applied. Now, assuming you are using a standard incandescent light bulb (say somewhere around 50 to 100 watts), look what happens to the power consumed at the moment the bulb is first powered up and the power that is consumed after the filament heats up. P=E*E/R The wattage rating of a light bulb is measured at full rated voltage in steady state conditions. That means a 100 W bulb pulls quite a bit more than 100W at the instant it's turned on. You know how it seems that an incandescent light bulb always burns out when you flip the switch to turn it on.

So, the result is that as you are keying your light bulb filament (dummy load), the actual load seen by your transmitter rapidly varies. It starts low and goes to a higher value with each dit and dah.

The old tube rigs didn't much care – they were tough. But your output transistors are a bit more finicky in their diet. Oops! There goes that magic smoke again.

But for QRPer's - not to worry too much. At 5 watts (figure your voltage into 50 ohms), a 50 to 100 watt light bulb probably won't undergo too much heating. If you have enough power to make the filament glow (even dimly), that load resistance is already on the way up.

What it might do, though is contribute to a “yooupy” signal, if your rig is sensitive to a changing load. Remember how the changing load presented by a blowing wind on a wire antenna could affect the old single tube MOPA transmitters and regin receivers back in the days of yore?

Oh, well... Enjoy! That's what ham radio is all about, anyway.


Bruce – KK0S


--
What a great improvement,  Yahoo just didn't work for me.  Dick,  n0tgr


Re: Exploring the 4SQRP Group "Member Map" tab

Jeff Logullo N0̸MII
 

One exception to Jim's tip below: if you're trying to search for a "0" (numeric zero) your browser search will fail. You'll need to substitute an "O" (letter O) instead of searching for a zero. What looks like slashed zeros on the Member Map page is actually a Unicode "Latin Capital Letter O with Stroke." So a search for zeros will fail.

Jeff N0̸MII 

On Aug 13, 2019, at 10:21 PM, Jim Pruitt <jpruitt67@...> wrote:

Don if you go to the 4SQRP home page
http://www.4sqrp.com/index.php
and select
"Member List"
http://www.4sqrp.com/w25.php
which is the item above "Member Map" that you mention.  That List will brink up a frame with all the member's calls on it.  Do a browser search (Control F for Firefox/Waterfox) and put in BOW [or W6BOW] it will go to W6BOW (the only Bow on the list).  When you mouse over W6BOW a box pops out that says you are member 1830.  Using the map shows where members are located, their call, and name but in many cases you have to enlarge the map a lot in order to separate members so you can pick one.  It does not list membership number.  The "Member List" page does give you that information though.

Thank you.

Jim Pruitt
WA7DUY


On 8/13/2019 5:39 PM, W6BOW via Groups.Io wrote:
Dear All,

Exploring the 4SQRP Group (http://www.4sqrp.com/index.php) "Member Map"  tab (http://www.4sqrp.com/Map.php) I find that this utility needs updating. (I can't find myself -W6BOW. Do I exist?)
A "member's callsign lookup box" would be a great addition.

I'd be happy to sponsor or help to sponsor ($$$) an update and upgrade.

73,

Don - W6BOW
San Francisco  CA   USA




--
Jeff N0̷MII


Re: The Lightbulb QSO Party

KK0S
 

All -


Be aware that the ohmic resistance of a Tungsten light bulb has a very strong positive temperature coefficient! The resistance of the filament drastically increases as it heats up when power is applied.

Take your ohm meter and measure the filament resistance at room temperature, with no power applied. Now, assuming you are using a standard incandescent light bulb (say somewhere around 50 to 100 watts), look what happens to the power consumed at the moment the bulb is first powered up and the power that is consumed after the filament heats up. P=E*E/R The wattage rating of a light bulb is measured at full rated voltage in steady state conditions. That means a 100 W bulb pulls quite a bit more than 100W at the instant it's turned on. You know how it seems that an incandescent light bulb always burns out when you flip the switch to turn it on.

So, the result is that as you are keying your light bulb filament (dummy load), the actual load seen by your transmitter rapidly varies. It starts low and goes to a higher value with each dit and dah.

The old tube rigs didn't much care – they were tough. But your output transistors are a bit more finicky in their diet. Oops! There goes that magic smoke again.

But for QRPer's - not to worry too much. At 5 watts (figure your voltage into 50 ohms), a 50 to 100 watt light bulb probably won't undergo too much heating. If you have enough power to make the filament glow (even dimly), that load resistance is already on the way up.

What it might do, though is contribute to a “yooupy” signal, if your rig is sensitive to a changing load. Remember how the changing load presented by a blowing wind on a wire antenna could affect the old single tube MOPA transmitters and regin receivers back in the days of yore?

Oh, well... Enjoy! That's what ham radio is all about, anyway.


Bruce – KK0S

4801 - 4820 of 25048