Date   

Re: 43SQRP net

Paul Smith
 

Thanks for the report Charles,

I was getting some thunderstorm static as well. not sure from where but it was there

de Paul N0NBD


Sent from Outlook




From: Charles Moizeau
Sent: Thursday, February 9, 2017 2:13 AM
To: 4sqrp@...; Paul Smith
Subject: Re: 43SQRP net
 

Condx in NJ are very noisy with a major snow storm arriving here in six hours.  At 0130Z-ish I heard Wayne at 449.  Normally WA9PWP is the sig champ, but I didn't hear him.  Surprisingly, the other Paul, N0NBD, was nearly 569.


Charles, W2SH 






From: 4sqrp@... <4sqrp@...> on behalf of Paul Smith psmith61@... [4sqrp] <4sqrp@...>
Sent: Wednesday, February 8, 2017 8:57 PM
To: 4sqrp@...
Subject: [4sqrp] 43SQRP net
 
 

WOW I had a bunch of noise here tonight I did get 

WA0ITP Terry

WA8PWP Paul

WN0WWY Dale.

Thanks Terry for the relay.de Paul N0NBD


Sent from Outlook


Re: 43SQRP net

w2sh@...
 

Condx in NJ are very noisy with a major snow storm arriving here in six hours.  At 0130Z-ish I heard Wayne at 449.  Normally WA9PWP is the sig champ, but I didn't hear him.  Surprisingly, the other Paul, N0NBD, was nearly 569.


Charles, W2SH 






From: 4sqrp@... <4sqrp@...> on behalf of Paul Smith psmith61@... [4sqrp] <4sqrp@...>
Sent: Wednesday, February 8, 2017 8:57 PM
To: 4sqrp@...
Subject: [4sqrp] 43SQRP net
 
 

WOW I had a bunch of noise here tonight I did get 

WA0ITP Terry

WA8PWP Paul

WN0WWY Dale.

Thanks Terry for the relay.de Paul N0NBD


Sent from Outlook


Re: Member List

davemrtn
 

That would be a 'historic' OzarkCon event !

How do we make it happen !!!   ????

David Martin - NA1MH - Mountain Home, Ar. -----------------------------------------

On 2/8/2017 19:41, ktalbott ktalbott@... [4sqrp] wrote:
 
It would be interesting to see them all at Ozarkcon!
Ken ke4rg


Sent from Samsung Mobile



-------- Original message --------
From: "Johnny Matlock jomatlock@... [4sqrp]" <4sqrp@...>
Date: 02/08/2017 5:54 PM (GMT-05:00)
To: 4sqrp@...,davemrtn
Subject: Re: [4sqrp] Member List


 
Look out SKCC here we come!!
Thanks for the info Dave
Johnny AC0BQ 
On Wed, Feb 8, 2017 at 1:40 PM davemrtn davemrtn@... [4sqrp] <4sqrp@...> wrote:
 
WOW !!!

I see the 4SQRP member count very recently surpassed 1300.

Way to go 4SQRP team and members.

David -NA1MH



Sent from my Verizon, Samsung Galaxy smartphone
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43SQRP net

Paul Smith
 

WOW I had a bunch of noise here tonight I did get 

WA0ITP Terry

WA8PWP Paul

WN0WWY Dale.

Thanks Terry for the relay.de Paul N0NBD


Sent from Outlook


Re: Member List

Ken Talbott
 

It would be interesting to see them all at Ozarkcon!
Ken ke4rg


Sent from Samsung Mobile



-------- Original message --------
From: "Johnny Matlock jomatlock@... [4sqrp]" <4sqrp@...>
Date: 02/08/2017 5:54 PM (GMT-05:00)
To: 4sqrp@...,davemrtn <davemrtn@...>
Subject: Re: [4sqrp] Member List


 

Look out SKCC here we come!!
Thanks for the info Dave
Johnny AC0BQ 
On Wed, Feb 8, 2017 at 1:40 PM davemrtn davemrtn@... [4sqrp] <4sqrp@...> wrote:
 

WOW !!!

I see the 4SQRP member count very recently surpassed 1300.

Way to go 4SQRP team and members.

David -NA1MH



Sent from my Verizon, Samsung Galaxy smartphone

--
Sent from Gmail Mobile


Re: Hot IRF510

David Wilcox
 

Thank you to all the responses.  Will evaluate further and replace the IRF510.

Dave K8WPE

On Feb 8, 2017, at 6:24 PM, nw8l@... [4sqrp] <4sqrp@...> wrote:

 

Oops, the link to the ARRL note was truncated, here it is again:



Bob NW8L



---In 4sqrp@..., wrote :

Yes, I ran into the same problem, Q6 failed and was running extremely hot etc. not long after I built the kit.

At first I removed it and completed the (-) path with a piece of wire, later I replaced it to restore the polarity protection it offers.

The gate of Q6 (a MOSFET) is directly connected to the (+) input power pin. I suspect that it was damaged by static discharge, so now I'm very careful when connecting the power to the radio.

Eventually I'll lift the gate lead of Q6 and kludge in an RC ESD protection network like that seen in figure 2 of this ARRL note:


If that works out I'll have additional peace of mind, it's very dry here in NM and electrostatic discharge can be a problem.

Bob NW8L


---In 4sqrp@..., wrote :

I am finding that my reverse voltage IRF510 is running hot enough to burn my fingers, even when the BJ is switched off. I was questioning why my Jet Ski battery was running down after a few days of "just sitting on the bench" while connected to the turned off BJ.

Any suggestions?

Also the receiver oscillator transistor seems to be the temp sensitive wandering part. I sprayed lightly each part with coolant air and that part seems to move frequency the fastest and the farthest. The toroid is also temperature sensitive but less so.

Dave K8WPE

Dave K8WPE


Re: Hot IRF510

Jim, N5IB
 

Sounds like that may be another instance of a failed Q6. That is a clever circuit that minimized voltage drop in the supply line, but the IRF510 can be damaged by esd. When (if) you replace it, tack a 470K or a 1 Meg in parallel with a 0.01 uF cap across from gate to source. That will protect it from most esd, and will only pull a few uA from your power source.

On the temp stability.... the iron powder of the toroid core has a positive temperature coefficient. One trick you can do is replace C20 with a polystyrene capacitor. They have a negative coefficient. Don't expect to cancel the drift, but at least they'll be going in opposite directions.

N5IB


Re: Hot IRF510

Bob NW8L
 

Oops, the link to the ARRL note was truncated, here it is again:


Bob NW8L



---In 4sqrp@..., <nw8l@...> wrote :

Yes, I ran into the same problem, Q6 failed and was running extremely hot etc. not long after I built the kit.

At first I removed it and completed the (-) path with a piece of wire, later I replaced it to restore the polarity protection it offers.

The gate of Q6 (a MOSFET) is directly connected to the (+) input power pin. I suspect that it was damaged by static discharge, so now I'm very careful when connecting the power to the radio.

Eventually I'll lift the gate lead of Q6 and kludge in an RC ESD protection network like that seen in figure 2 of this ARRL note:


If that works out I'll have additional peace of mind, it's very dry here in NM and electrostatic discharge can be a problem.

Bob NW8L


---In 4sqrp@..., <djwilcox01@...> wrote :

I am finding that my reverse voltage IRF510 is running hot enough to burn my fingers, even when the BJ is switched off. I was questioning why my Jet Ski battery was running down after a few days of "just sitting on the bench" while connected to the turned off BJ.

Any suggestions?

Also the receiver oscillator transistor seems to be the temp sensitive wandering part. I sprayed lightly each part with coolant air and that part seems to move frequency the fastest and the farthest. The toroid is also temperature sensitive but less so.

Dave K8WPE

Dave K8WPE


Re: Hot IRF510

Bob NW8L
 

Yes, I ran into the same problem, Q6 failed and was running extremely hot etc. not long after I built the kit.

At first I removed it and completed the (-) path with a piece of wire, later I replaced it to restore the polarity protection it offers.

The gate of Q6 (a MOSFET) is directly connected to the (+) input power pin. I suspect that it was damaged by static discharge, so now I'm very careful when connecting the power to the radio.

Eventually I'll lift the gate lead of Q6 and kludge in an RC ESD protection network like that seen in figure 2 of this ARRL note:


If that works out I'll have additional peace of mind, it's very dry here in NM and electrostatic discharge can be a problem.

Bob NW8L


---In 4sqrp@..., <djwilcox01@...> wrote :

I am finding that my reverse voltage IRF510 is running hot enough to burn my fingers, even when the BJ is switched off. I was questioning why my Jet Ski battery was running down after a few days of "just sitting on the bench" while connected to the turned off BJ.

Any suggestions?

Also the receiver oscillator transistor seems to be the temp sensitive wandering part. I sprayed lightly each part with coolant air and that part seems to move frequency the fastest and the farthest. The toroid is also temperature sensitive but less so.

Dave K8WPE

Dave K8WPE


Re: Second Sunday Sprint

Bry Carling <af4k@...>
 

Bravo


This will give us something fun to do after most things are finished at the Orlando Hamcation!


Bry, AF4K / WN4NRR



From: 4sqrp@... <4sqrp@...> on behalf of 'John R. Lonigro' jonigro@... [4sqrp] <4sqrp@...>
Sent: Wednesday, February 8, 2017 9:06 AM
To: 4SQRP
Subject: [4sqrp] Second Sunday Sprint
 
 

The Second Sunday Sprint is this coming Sunday, February 12th, 7:00-9:00
pm CST (Monday, 0100-0300Z). The rules are simple. Go to the 4SQRP
website and click on "4SQRP on air activities" Scroll
down to the bottom of that page and you will see a summary of the rules,
plus links to where you submit your score and where you can get the
complete rules.

If you tried to participate but nobody heard you (or you heard nobody),
feel free to enter a score of 0 points, as long as you made an honest
try for at least 15 minutes. Obviously, reporting a score of 0 is
optional and won't affect anything, but it will give me an idea of how
many people are participating.

I don't have 80M capability, but I understand 80M has been more friendly
than 40M lately. It might be worth listening down there for a while.

72,

John, AA0VE
4SQRP Contest Coordinator


Re: Member List

Johnny AC0BQ
 

Look out SKCC here we come!!
Thanks for the info Dave
Johnny AC0BQ 

On Wed, Feb 8, 2017 at 1:40 PM davemrtn davemrtn@... [4sqrp] <4sqrp@...> wrote:

WOW !!!

I see the 4SQRP member count very recently surpassed 1300.

Way to go 4SQRP team and members.

David -NA1MH



Sent from my Verizon, Samsung Galaxy smartphone

--
Sent from Gmail Mobile


Re: Ocon Oscillator Hunt

WA0ITP
 

Hi Bill,
Fb on the Alex Loop, sounds like a good DF loop. Bet quite a few of the guys have them or another magloop.  The hunt is on!
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 2/8/2017 3:45 PM, dekle wrote:

Terry,
 
I just looked at the "Snoop Loop" you referenced and it got me thinking.
I realized that I already had a DF loop - the Alex Loop.
Although it is bigger and requires a receiver, it can be easily hand-held.
I tried it with a HB-1B and it works great.
The null is broadside to the loop and very sharp.
It doesn't have front/back directional discrimination, but with a little triangulation, the Hidden Oscillator would be easy to find.
A little team work would be an asset here, but the "team" will have to decide who gets the prize.
 
Thanks for the reference!
 
Bill
KV6Z
 
 
 
 
----- Original Message -----
Sent: Wednesday, February 08, 2017 2:01 PM
Subject: [4sqrp] Fwd: Ocon Oscillator Hunt

 

I'll try again, didn't see the first post.

Just ran across this article on direction finding antennas.  Some versions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks quite good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf

72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


-------- Forwarded Message --------
Subject: Ocon Oscillator Hunt
Date: Wed, 8 Feb 2017 13:47:00 -0600
From: WA0ITP
Reply-To: wa0itp@...
To: 4sqrp@... <4sqrp@...>


Just ran across this article on direction finding antennas.  Some vbersions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks very good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf
-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com



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This email has been checked for viruses by Avast antivirus software.
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Re: Ocon Oscillator Hunt

George Phoenix
 

The original QST article about the Snoop Loop is at:

http://p1k.arrl.org/pubs_archive/38970

73 de George, KD0RII


On 2/8/2017 13:47, WA0ITP wa0itp@... [4sqrp] wrote:
 

Just ran across this article on direction finding antennas.  Some vbersions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks very good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf

-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


Re: Ocon Oscillator Hunt

dekle <dekle@...>
 


Terry,
 
I just looked at the "Snoop Loop" you referenced and it got me thinking.
I realized that I already had a DF loop - the Alex Loop.
Although it is bigger and requires a receiver, it can be easily hand-held.
I tried it with a HB-1B and it works great.
The null is broadside to the loop and very sharp.
It doesn't have front/back directional discrimination, but with a little triangulation, the Hidden Oscillator would be easy to find.
A little team work would be an asset here, but the "team" will have to decide who gets the prize.
 
Thanks for the reference!
 
Bill
KV6Z
 
 
 
 

----- Original Message -----
Sent: Wednesday, February 08, 2017 2:01 PM
Subject: [4sqrp] Fwd: Ocon Oscillator Hunt

 

I'll try again, didn't see the first post.

Just ran across this article on direction finding antennas.  Some versions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks quite good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf

72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


-------- Forwarded Message --------
Subject: Ocon Oscillator Hunt
Date: Wed, 8 Feb 2017 13:47:00 -0600
From: WA0ITP
Reply-To: wa0itp@...
To: 4sqrp@... <4sqrp@...>


Just ran across this article on direction finding antennas.  Some vbersions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks very good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf
--
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com




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This email has been checked for viruses by Avast antivirus software.
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Al Gulseth

David Lininger
 

Al, I've managed to lose your edress. Please email me. Thanks.


--
David Lininger, kb0zke
Rev. 2:10
kb0zke@gmail.com


Hot IRF510

David Wilcox
 

I am finding that my reverse voltage IRF510 is running hot enough to burn my fingers, even when the BJ is switched off. I was questioning why my Jet Ski battery was running down after a few days of "just sitting on the bench" while connected to the turned off BJ.

Any suggestions?

Also the receiver oscillator transistor seems to be the temp sensitive wandering part. I sprayed lightly each part with coolant air and that part seems to move frequency the fastest and the farthest. The toroid is also temperature sensitive but less so.

Dave K8WPE

Dave K8WPE


Ocon Oscillator Hunt

WA0ITP
 

I'll try again, didn't see the first post.

Just ran across this article on direction finding antennas.  Some versions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks quite good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


-------- Forwarded Message --------
Subject: Ocon Oscillator Hunt
Date: Wed, 8 Feb 2017 13:47:00 -0600
From: WA0ITP
Reply-To: wa0itp@...
To: 4sqrp@... <4sqrp@...>


Just ran across this article on direction finding antennas.  Some vbersions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks very good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf
-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


Ocon Oscillator Hunt

WA0ITP
 

Just ran across this article on direction finding antennas.  Some vbersions look easy to build and would be good for the Ocon Oscillator Hunt. The Snoop Loop abt halfway down the page looks very good for our purposes.
http://www.ce5prd.cl/documentos/antenna_handbook/14.pdf
-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com


Member List

davemrtn
 

WOW !!!

I see the 4SQRP member count very recently surpassed 1300.

Way to go 4SQRP team and members.

David -NA1MH



Sent from my Verizon, Samsung Galaxy smartphone


Re: 4QRP email blog 2017-1

Johnny AC0BQ
 

Good Job Walter.
Thanks 
Johnny AC0BQ

On Wed, Feb 8, 2017 at 12:11 PM Walter - K5EST walter.k5est@... [4sqrp] <4sqrp@...> wrote:


4QRP
The original email blog of the 4SQRP Group -- copyright February 2017
Walter - K5EST - Editor


This coming weekend

SSS Second Sunday Spring
February 12th

The Second Sunday Sprint is this coming Sunday, February 12th7:00-9:00 
pm CST (Monday, 0100-0300Z). The rules are simple. Go to the 4SQRP 
website <http://4sqrp.com> and click on "4SQRP on air activities" Scroll 
down to the bottom of that page and you will see a summary of the rules, 
plus links to where you submit your score and where you can get the 
complete rules.

If you tried to participate but nobody heard you (or you heard nobody), 
feel free to enter a score of 0 points, as long as you made an honest 
try for at least 15 minutes. Obviously, reporting a score of 0 is 
optional and won't affect anything, but it will give me an idea of how 
many people are participating.

I don't have 80M capability, but I understand 80M has been more friendly 
than 40M lately. It might be worth listening down there for a while.

72,

John, AA0VE
4SQRP Contest Coordinator



OzarkCon 2017

With less than 50 days until the pre-registration ends to the Premier MidWest QRP Conference, OzarkCon, please do not wait to pre-register! Do it now :-)

PrePaid Registrants will receive the following items in your package at the Registration desk when you arrive in Branson: 
1. Tickets for the prize drawings (two per registration) 
2. Meal tickets for the Friday night banquet dinner (if you ordered them) 
3. Souvenir callsign and name ID badge (if pre-registered and paid by the dates indicated on the website)

ALSO
an OzarkCon FIRST.....
The Hidden Oscillator

 

At the conclusion of the prize drawings on Saturday I’m going to activate a small rf oscillator and hide it somewhere in or around the Stonecastle. The person that returns it to me will receive an unbuilt Hy-Per-Mite* audio filter kit as a prize.

 The oscillator is set to approximately 7116.5 kHz and it switches on for about 1.5 seconds and off for about the same amount of time. You will be able to hear it with your cw receiver. (Actually it’s possible to "hear" it with just a portable AM shortwave receiver but during the ‘on’ time it will just quiet the receiver and you won’t get the nice CW note without a BFO). I can hear it with my County Comm GP-5/SSB receiver 125 feet away. I’ll let it run until someone finds it or until I have to leave on Sunday.

 It will be hidden in a “common” area that is accessible to everyone at any time. Nothing will have to be disassembled and nothing of any major consequence will have to be moved to find it. It will be stationary and its retrieval will not require you to be in an unsafe situation. 

Good luck.......73, Bill - KV6Z

Dummy Load QSO Party at O'Con

Be sure to bring along a portable rig, a dummy load and some QSL cards. There will be a fun operating event at the Stone Castle to make some QSO's on a dummy load. Suggested operating frequency is around 7040 and 7122KHz CW.

Special event station KØN will be on the air as well as WQ5RP on the dummy load. Make a QSO with KØN or WQ5RP and bring your QSL card to the station to be entered into a special prize drawing!

Terry, WA0ITP has provided some info on the OzarkCon Dummy Load Special Antenna that might be helpful to increase your signal strength.  Check it ot on Terry's web site.





The Bayou Jumper

Have you heard a "Jumper" on the air? This popular nostalgic kit has a huge following. Being "rock-bound" (crystal controlled) dread has sure changed over the years. The rock-bound has become an on the air status symbol. I hear operators moving frequencies to accommodate the the crystal bound stations. Seems like the nautical rules ......power boats give way to sail.

The rig has a socket for the old-style FT243 crystals, plus 7030 and 7122 kHz crystals and included crystal adapters. If you have old 7MHz Novice crystals, you can use them with this rig! AND only one toroid to wind in the receiver, and none in the transmitter. Only ONE for the whole rig!

To order your Bayou Jumper before OzarkCon, see

http://www.4sqrp.com/bayouJumper.php


SMALL ........but Not a Magnetic Loop Antenna

Maybe you remember the ole time twin lead vertical. How about a coax non-magnetic loop that is small and has some possibilities. My first loop was worth more experimenting. Best part is that NO butterfly capacitors or vacuum variables are needed :-) See:


dit

72/73....Walter Dufrain - K5EST

 



















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