Date   
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

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

Jim Pruitt
 

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



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

J.K. Wright
 

Your number is 1830. The call sign listing is in alpha/numeric order. Go toward the bottom of first column for W..... then across.....


On Tue, Aug 13, 2019, 8:39 PM W6BOW via Groups.Io <DBuckter=aol.com@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


Exploring the 4SQRP Group "Member Map" tab

W6BOW
 

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: The Lightbulb QSO Party

Nick WA5BDU
 

I always figured that with the light bulb thing, most of the radiation would be from the coax. But maybe not.

There was an article in QST years ago (July 2000) called "Everything Works" where a guy made QSOs using a light bulb for a load. It was a much better period for propagation though.  I found it on line here:


At OzarkCon this year I used a 50 ohm resistor inserted into a small loop of wire for the in-hotel QSO party. I was amazed to work a station in an adjacent state on that arrangement.

73-

Nick, WA5BDU

On Tue, Aug 13, 2019 at 2:50 PM Duane Brayton <dwbrayton@...> wrote:
Try to use a bulb that will be near 50 ohms resistance under load.

On Aug 13, 2019, at 12:18 AM, "Gary Kohtala via Groups.Io" <yahoo.com@groups.io target=_blank>gary.k7ek=yahoo.com@groups.io> wrote:
If one uses a 100w bulb instead of a 6w bulb will the resulting signal be significantly stronger? 😉🙈

Best regards,

Gary, K7EK

Sent from BlueMail
On Aug 9, 2019, at 19:20, Paul Smith < n0nbd@...> wrote:
Sounds good to me. I have used a 6 watt exit light bulb and socket as a dummy load and it worked fine. I used it once with a home brewed tuner and tuned for full brilliance hi hi de Paul


Sent from Outlook


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Walter - K5EST <walter.k5est@...>
Sent: Friday, August 9, 2019 10:23 PM
To: 4SQRP@groups.io <4SQRP@groups.io>
Subject: [4SQRP] The Lightbulb QSO Party
 
For many years OzarkCon has been the host of the famous Dummy Load Antenna QSOs. An example is at Terry's WA0ITP website.....

Now we have another challenge.....The Lightbulb QSO Party.......

Have not tried the lightbulb in a long time but they do work, and be careful because you may see the SWR gradually jumping High! Old school filament lightbulbs are used! 

73,

Walter Dufrain - K5EST - QRPcw
.....   Four St@te QRP Group   ....
....  Navy Amateur Radio Club .....
.........  St Louis QRP Society .......

Re: The Lightbulb QSO Party

Duane Brayton
 

Try to use a bulb that will be near 50 ohms resistance under load.

On Aug 13, 2019, at 12:18 AM, "Gary Kohtala via Groups.Io" <yahoo.com@groups.io target=_blank>gary.k7ek=yahoo.com@groups.io> wrote:
If one uses a 100w bulb instead of a 6w bulb will the resulting signal be significantly stronger? 😉🙈

Best regards,

Gary, K7EK

Sent from BlueMail
On Aug 9, 2019, at 19:20, Paul Smith < n0nbd@...> wrote:
Sounds good to me. I have used a 6 watt exit light bulb and socket as a dummy load and it worked fine. I used it once with a home brewed tuner and tuned for full brilliance hi hi de Paul


Sent from Outlook


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Walter - K5EST <walter.k5est@...>
Sent: Friday, August 9, 2019 10:23 PM
To: 4SQRP@groups.io <4SQRP@groups.io>
Subject: [4SQRP] The Lightbulb QSO Party
 
For many years OzarkCon has been the host of the famous Dummy Load Antenna QSOs. An example is at Terry's WA0ITP website.....

Now we have another challenge.....The Lightbulb QSO Party.......

Have not tried the lightbulb in a long time but they do work, and be careful because you may see the SWR gradually jumping High! Old school filament lightbulbs are used! 

73,

Walter Dufrain - K5EST - QRPcw
.....   Four St@te QRP Group   ....
....  Navy Amateur Radio Club .....
.........  St Louis QRP Society .......

Re: The Lightbulb QSO Party

John T. Fitzer
 

Please be careful using higher wattage bulbs for dummy loads. I fear someone’s hearing may be damaged if you were to use a 1KW projection lamp with a 1 watt transmitter, not to mention the possible damage to one’s eyes from looking at the extremely bright light. Ah yes I think we may have figured out the answer to the worlds energy, just use a bigger load.   73. 1415926535

 

From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of W6BOW via Groups.Io
Sent: Tuesday, August 13, 2019 11:06 AM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] The Lightbulb QSO Party

 

Gary,

 

I haven't a final solution to your interesting question. My guess is that efficiency would increase with increased bulb wattage rating due to less energy loss in heating the filament assuming that the "bulb" is a filament type?

 

I happened upon the following conversion table most "illuminating" while pondering your query …

 

How to convert watts to lumens

 

73

 

Don Buckter - W6BOW

San Francisco  CA  USA

 

 

 

 

 

 

 

-----Original Message-----
From: Gary Kohtala via Groups.Io <gary.k7ek@...>
To: main <main@4sqrp.groups.io>
Sent: Mon, Aug 12, 2019 9:18 pm
Subject: Re: [4SQRP] The Lightbulb QSO Party

If one uses a 100w bulb instead of a 6w bulb will the resulting signal be significantly stronger? 😉🙈

Best regards,

Gary, K7EK

Sent from BlueMail

On Aug 9, 2019, at 19:20, Paul Smith <n0nbd@...> wrote:

Sounds good to me. I have used a 6 watt exit light bulb and socket as a dummy load and it worked fine. I used it once with a home brewed tuner and tuned for full brilliance hi hi de Paul

 

 

Sent from Outlook


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Walter - K5EST <walter.k5est@...>
Sent: Friday, August 9, 2019 10:23 PM
To: 4SQRP@groups.io <4SQRP@groups.io>
Subject: [4SQRP] The Lightbulb QSO Party

 

For many years OzarkCon has been the host of the famous Dummy Load Antenna QSOs. An example is at Terry's WA0ITP website.....

 

Now we have another challenge.....The Lightbulb QSO Party.......

 

Have not tried the lightbulb in a long time but they do work, and be careful because you may see the SWR gradually jumping High! Old school filament lightbulbs are used! 

 

73,

 

Walter Dufrain - K5EST - QRPcw

.....   Four St@te QRP Group   ....

....  Navy Amateur Radio Club .....

.........  St Louis QRP Society .......

.  Community Service Radio Club .

Re: The Lightbulb QSO Party

WD5GLO Lou
 

I guess feeding it with a hundred feet of ladder-line is out of the question...HI

On Aug 13, 2019, at 11:15 AM, J.K. Wright <wrightjk@...> wrote:

I suspect larger bulb = more filament length and better transmission, just like "the more wire in the air, the better"
Jerry, NK2C

On Tue, Aug 13, 2019, 12:05 PM W6BOW via Groups.Io <DBuckter=aol.com@groups.io> wrote:
Gary,

I haven't a final solution to your interesting question. My guess is that efficiency would increase with increased bulb wattage rating due to less energy loss in heating the filament assuming that the "bulb" is a filament type?

I happened upon the following conversion table most "illuminating" while pondering your query …

How to convert watts to lumens

73

Don Buckter - W6BOW
San Francisco  CA  USA







-----Original Message-----
From: Gary Kohtala via Groups.Io <gary.k7ek=yahoo.com@groups.io>
To: main <main@4sqrp.groups.io>
Sent: Mon, Aug 12, 2019 9:18 pm
Subject: Re: [4SQRP] The Lightbulb QSO Party

If one uses a 100w bulb instead of a 6w bulb will the resulting signal be significantly stronger? 😉🙈

Best regards,

Gary, K7EK

Sent from BlueMail
On Aug 9, 2019, at 19:20, Paul Smith <n0nbd@...> wrote:
Sounds good to me. I have used a 6 watt exit light bulb and socket as a dummy load and it worked fine. I used it once with a home brewed tuner and tuned for full brilliance hi hi de Paul


Sent from Outlook

From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Walter - K5EST <walter.k5est@...>
Sent: Friday, August 9, 2019 10:23 PM
To: 4SQRP@groups.io <4SQRP@groups.io>
Subject: [4SQRP] The Lightbulb QSO Party
 
For many years OzarkCon has been the host of the famous Dummy Load Antenna QSOs. An example is at Terry's WA0ITP website.....
http://www.wa0itp.com/dlspecial.html

Now we have another challenge.....The Lightbulb QSO Party.......
https://hamsignal.com/blog/the-lightbulb-qso-party

Have not tried the lightbulb in a long time but they do work, and be careful because you may see the SWR gradually jumping High! Old school filament lightbulbs are used! 

73,

Walter Dufrain - K5EST - QRPcw
.....   Four St@te QRP Group   ....
....  Navy Amateur Radio Club .....
.........  St Louis QRP Society .......
.  Community Service Radio Club .