1. main@4SQRP.groups.io
   Date   
Re: Pen under construction

Jerry Haigwood <jerry@...>
 

 

Folks,

All this talk about pigs and pens got me athinkin’ about the old Bluegrass song, “Pig In A Pen.”  The song is usually played at hyper speed – about 220-240 beats per minute.  Maybe we could get Nick Kennedy, WA5BDU, to play it for us on his Banjer.  It could become the 4sqrp theme song.  What’d think?

 

Lyrics: Pig In A Pen

Author: unknown

 

“I got a pig at home in a pen
   Corn to feed him on
   All I need's a pretty little girl
   To feed I'm when I'm gone

 

Going up on a mountain
To sow a little cane
Raise a barrel of sorghum
Sweet little Liza Jane

 

Black clouds arising
Sure sign of rain
Put that old gray bonnet
On little Liza Jane

 

Yonder comes that gal of mine
How do you think I know
Know her by that gingham gown
Hanging down so low

 

Bake them biscuits baby
Bake em good and brown
When you get them biscuits baked
We're Alabama bound”

 

Jerry W5JH

"building something without experimenting is just solder practice"

 

 

 

 
Re: those little rubber feet

WA0ITP
 

I have a bunch of those feet, and will send some out to you right away Jim.  Any one else need a some?   They are black in color, ~5/16 dia and ~ 1/32 thick.   Here are the dimensions and a pictorial. https://www.jameco.com/Jameco/Products/ProdDS/2118871.pdf 
 
I'd be happy to send some free to builders needing rubber bumbers, courtesy of me (postage) and Four State.  Max of 5 per person pse until we see how fast they go.  Contact me off list.

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

----- Original Message -----
Sent: Thursday, April 25, 2013 5:38 PM
Subject: Re: [4sqrp] those little rubber feet

Don't work for me, my 4S-Link came with the big feet.  Now I gotta find some of the smaller ones so I can keep my Gertboard IO from hitting the Pi's USB connector.  BTW, I've succeeded in getting a model B Pi to actually decode signals reliably using FLDIGI, but you have to set Overclocking to HIGH and it's best to do a cold install & reconfigure of the OS with whatever external sound device you're going to use plugged in at initial OS boot so it picks up all the drivers/necessary files right away.  Saves a whole lot of trouble identifying the device and finding the requisite driver packages for alsa.  If you don't overclock the Pi, it decodes very erratically.  I haven't tried transmit yet as I have to figure a way to derive PTT.  I suppose I could just use VOX on the KX3 but haven't tried it yet.
 


> You remember those little black rubber feet that couldn't be used
> on the 4S-Link.....
>
> I found a use for one of them.
>
> I put one on the top of the USB connector housing on my Raspberry-
> Pi, so the TNC-Pi daughter board would not come into contact with
> the USB metal housing.
>
> It was a perfect fit. Thanks Dave (NM0S) & Terry.
>
> --
> *David Martin - K5DCM ---o0o---
> Mountain Home, Arkansas*
> Guns don't kill people, any more than spoons & forks cause obesity.
> Automobile efficiency is measured in MPG, NOT Gallons per Mile.
> Amateur Radio efficiency, fun & skill is measured by Miles Per
> Watt, NOT Watts per Mile.
>
>
> ------------------------------------
>
> 4SQRP Website: http://4sqrp.com
> OzarkCon is coming April 4-5, 2014 in Branson, MO
> View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
>
> <*> To visit your group on the web, go to:
>
> <*> Your email settings:
> Individual Email | Traditional
>
> <*> To change settings online go to:
> (Yahoo! ID required)
>
> <*> To change settings via email:
> 4sqrp-digest@...
> 4sqrp-fullfeatured@...
>
> <*> To unsubscribe from this group, send an email to: 4sqrp-
> unsubscribe@...
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SMT building ideas...

ka0ncr
 

Hi Group,


I thought that I would pass along this link to a web site with a video by a guy that has some interesting ideas on making SMT building less of a chore...


http://dangerousprototypes.com/2012/07/12/tips-on-speeding-up-smd-part-placement/


Check out the vid.. Some of it is very interesting, and he seems to know what he is talking about, that is, if you can drink enough high sugar cola to be able to keep up with what he is saying! ;>

I have used the vacuum placement tool idea for smt, using a modified fish tank air bubbler pump as a vacuum.. seems to work well.

I also have tried the USB microscopes and web cams, but just the past couple of weeks have gotten in a couple of old "document presenters" off e-bay, which seem to work well for this. They have a number of featuers that are helpful, one of which is you dont need a pc to run the web cam software.. it just displays on a TV or VGA monitor!

If anyone is interested in the Document presenters, drop me a line and I can let you know what I have found about the two types of units I just got. Both were under $35 each.. so I didn't think it was to big of a risk!

73 - and I hope to see a bunch of 4sqrp groupies at FDIM this year!

Arnie KA0NCR
Re: Pen under construction

WA0ITP
 

FB on the enclosure. Send me a picture when it's finished and I'll upload it to
the pigrig picture page.

It's a piece-a-cake. A link to instructions is printed on the label page, here
'tis
Label application tips here http://www.wa0itp.com/ats3.html#Labeltips
Also
Punch / Drill Sizes - See Punching Tutorial at
http://www.wa0itp.com/altoids_tutorial.pdf
and
A hole size template is on the label page also. I tried to cover all the bases
on that one sheet.

Good luck, I'm sure your pig will turn out fine. They are all fine swine :o)
----------------------------------
I love this radio stuff !
72 WA�ITP
www.wa0itp.com
www.4sqrp.com

----- Original Message -----
From: "Lee Mairs (SAG)" <lmairs@sagcorp.com>
To: <4sqrp@yahoogroups.com>
Sent: Thursday, April 25, 2013 5:38 PM
Subject: [4sqrp] Pen under construction


| I've progressed to building a pen for the PigRig #157 using a label
| provided by Terry.
|
| My question is: Does one print out the front and back panel labels and glue
| them to the TenTec box? If yes, what type of glue, and are there any magic
| tricks about doing this?
|
| 73 de Lee
| KM4YY
|
|
| ------------------------------------
|
| 4SQRP Website: http://4sqrp.com
| OzarkCon is coming April 4-5, 2014 in Branson, MO
| View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
|
|
|
Re: those little rubber feet

Dale Putnam
 

Hey Jim,
  I ahve some stick on feet.. they are circles and white. and 1/8 in thick...
would they work for you?

Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 

 
To: 4sqrp@...
From: w0eb@...
Date: Thu, 25 Apr 2013 17:38:33 -0500
Subject: Re: [4sqrp] those little rubber feet

 
Don't work for me, my 4S-Link came with the big feet.  Now I gotta find some of the smaller ones so I can keep my Gertboard IO from hitting the Pi's USB connector.  BTW, I've succeeded in getting a model B Pi to actually decode signals reliably using FLDIGI, but you have to set Overclocking to HIGH and it's best to do a cold install & reconfigure of the OS with whatever external sound device you're going to use plugged in at initial OS boot so it picks up all the drivers/necessary files right away.  Saves a whole lot of trouble identifying the device and finding the requisite driver packages for alsa.  If you don't overclock the Pi, it decodes very erratically.  I haven't tried transmit yet as I have to figure a way to derive PTT.  I suppose I could just use VOX on the KX3 but haven't tried it yet.
 


> You remember those little black rubber feet that couldn't be used
> on the 4S-Link.....
>
> I found a use for one of them.
>
> I put one on the top of the USB connector housing on my Raspberry-
> Pi, so the TNC-Pi daughter board would not come into contact with
> the USB metal housing.
>
> It was a perfect fit. Thanks Dave (NM0S) & Terry.
>
> --
> *David Martin - K5DCM ---o0o---
> Mountain Home, Arkansas*
> Guns don't kill people, any more than spoons & forks cause obesity.
> Automobile efficiency is measured in MPG, NOT Gallons per Mile.
> Amateur Radio efficiency, fun & skill is measured by Miles Per
> Watt, NOT Watts per Mile.
>
>
> ------------------------------------
>
> 4SQRP Website: http://4sqrp.com
> OzarkCon is coming April 4-5, 2014 in Branson, MO
> View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
>
> <*> To visit your group on the web, go to:
>
> <*> Your email settings:
> Individual Email | Traditional
>
> <*> To change settings online go to:
> (Yahoo! ID required)
>
> <*> To change settings via email:
> 4sqrp-digest@...
> 4sqrp-fullfeatured@...
>
> <*> To unsubscribe from this group, send an email to: 4sqrp-
> unsubscribe@...
>
> <*> Your use of Yahoo! Groups is subject to:
Re: those little rubber feet

Jim Sheldon
 

Don't work for me, my 4S-Link came with the big feet.  Now I gotta find some of the smaller ones so I can keep my Gertboard IO from hitting the Pi's USB connector.  BTW, I've succeeded in getting a model B Pi to actually decode signals reliably using FLDIGI, but you have to set Overclocking to HIGH and it's best to do a cold install & reconfigure of the OS with whatever external sound device you're going to use plugged in at initial OS boot so it picks up all the drivers/necessary files right away.  Saves a whole lot of trouble identifying the device and finding the requisite driver packages for alsa.  If you don't overclock the Pi, it decodes very erratically.  I haven't tried transmit yet as I have to figure a way to derive PTT.  I suppose I could just use VOX on the KX3 but haven't tried it yet.
 


> You remember those little black rubber feet that couldn't be used
> on the 4S-Link.....
>
> I found a use for one of them.
>
> I put one on the top of the USB connector housing on my Raspberry-
> Pi, so the TNC-Pi daughter board would not come into contact with
> the USB metal housing.
>
> It was a perfect fit. Thanks Dave (NM0S) & Terry.
>
> --
> *David Martin - K5DCM ---o0o---
> Mountain Home, Arkansas*
> Guns don't kill people, any more than spoons & forks cause obesity.
> Automobile efficiency is measured in MPG, NOT Gallons per Mile.
> Amateur Radio efficiency, fun & skill is measured by Miles Per
> Watt, NOT Watts per Mile.
>
>
> ------------------------------------
>
> 4SQRP Website: http://4sqrp.com
> OzarkCon is coming April 4-5, 2014 in Branson, MO
> View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
>
> <*> To visit your group on the web, go to:
>
> <*> Your email settings:
> Individual Email | Traditional
>
> <*> To change settings online go to:
> (Yahoo! ID required)
>
> <*> To change settings via email:
> 4sqrp-digest@...
> 4sqrp-fullfeatured@...
>
> <*> To unsubscribe from this group, send an email to: 4sqrp-
> unsubscribe@...
>
> <*> Your use of Yahoo! Groups is subject to:
Pen under construction

Lee Mairs (SAG) <lmairs@...>
 

I've progressed to building a pen for the PigRig #157 using a label provided by Terry.

My question is: Does one print out the front and back panel labels and glue them to the TenTec box? If yes, what type of glue, and are there any magic tricks about doing this?

73 de Lee
KM4YY
those little rubber feet

davemrtn
 

You remember those little black rubber feet that couldn't be used on the 4S-Link.....

I found a use for one of them.

I put one on the top of the USB connector housing on my Raspberry-Pi, so the TNC-Pi daughter board would not come into contact with the USB metal housing.

It was a perfect fit. Thanks Dave (NM0S) & Terry.

--
*David Martin - K5DCM ---o0o---
Mountain Home, Arkansas*
Guns don't kill people, any more than spoons & forks cause obesity.
Automobile efficiency is measured in MPG, NOT Gallons per Mile.
Amateur Radio efficiency, fun & skill is measured by Miles Per Watt, NOT Watts per Mile.
Re: HI-PER-MITE parts question

Dennis Gaskill <gaskilld@...>
 

Nick ;
Did you give a talk on LTSpice at OzarkCon a couple of years ago?
Anyway, old buddy, old pal would you like to share what you have modeled of the HY-PER-MITE.
Just might be purty handy! You might want to upload it to the Yahoo group. 
I am glad you have tamed the HPM beast....... Good work!
 
Dennis KC0IFQ
 

Sent: Thursday, April 25, 2013 2:39 PM
Subject: Re: [4sqrp] HI-PER-MITE parts question

Thanks for the responses.  I did finally get it all together and into a box.  I think it'll be handy on things with no CW selectivity like the Argonaut 505 and my various homebrew projects.  I was concerned that I didn't want to foul up the frequency response while trying to adjust the gain.  I could see that R12 and R11 are just a voltage divider for gain control (reduction) into the LM386, but it looked like R1 also functions as part of the frequency determining network of the first stage.

Finally did an LTSpice model of the circuit to make sure I didn't make a mistake before soldering things together.  Interesting -- you can see the staggering described in the article.

I made some measurements of voltages needed to produce low, medium and high audio on typical earbuds and they're remarkably small.  A faint sound was 7 mV rms, 3.1 uW.  Moderate was 29 mV rms, 50 uW, louder was 57 mV rms, 0.36 mW.  This was into a 16 ohm earbud.

I substituted a 100k pot for R11 and R12 as suggested in the manual. 

Since line levels can be a couple of volts, I had some concern about overdriving the stages in some instances, so I added an 11:1 divider (10k series, 1k shunt) to the front.  There's still plenty of gain for sure even after that ~20 dB reduction.

72-

Nick, WA5BDU

n 4/22/2013 8:28 PM, Dennis Gaskill wrote:
 

Nick;
I think I remember what was going on ...........
 
If you look at the schematic, the resistors  R1, R2, R11, R12 are set up for 30 db gain. Refer to the table for setting gain on page 2 in the manual.
When they created the Center Frequency Table, I think they were looking at the schematic........
The only difference between 0 db and 30 db is that you swap R1 and R3...........
R3 and R11 and R12 are not in the Center Frequency Table, therefore R1 is all we have to worry about for gain.
One more factoid; the different center freqs are found by scaling the resistors by the same ratio as the freq ratio.
Example: If we are moving the center freq from 700 to 640 then the ratio is 700/640 = 1.094 
So if R1 was 33K at 700 Hz the R1  at 640 Hz would be 1.094 * 33K = 36 K
And at long last if R1 is 1meg * 1.094 = 1.094 meg for R1.............
I would just leave it at 1M .....it won't make that much difference, unless you are going for 500 Hz.
Sorry for the long winded explanation...............and sorry this took so long to reply.
 
For My money I would leave it at 700 Hz. Will 70 hertz make enough difference to justify scrounging up the new resistors?
I am just Lazy
Dennis KC0IFQ
 
Sent: Friday, April 19, 2013 6:39 PM
Subject: [4sqrp] HY-PER-MITE parts question

 


I picked up a HY-PER-MITE filter kit at OzarkCon and am getting ready to
put it together. Checking out the configuration options first.

The instructions for the center frequency say to use R1 = 36k for the
640 Hz option (versus 33k for the 700 Hz standard center).

The assembly instructions for setting gain say that for a gain of 0 dB,
R1 = 1M.

How do I reconcile the two for 640 Hz and 0 dB? Could one of these be
referring to something other than R1?

72-

Nick, WA5BDU






Re: HI-PER-MITE parts question

Nick-WA5BDU
 

Thanks for the responses.  I did finally get it all together and into a box.  I think it'll be handy on things with no CW selectivity like the Argonaut 505 and my various homebrew projects.  I was concerned that I didn't want to foul up the frequency response while trying to adjust the gain.  I could see that R12 and R11 are just a voltage divider for gain control (reduction) into the LM386, but it looked like R1 also functions as part of the frequency determining network of the first stage.

Finally did an LTSpice model of the circuit to make sure I didn't make a mistake before soldering things together.  Interesting -- you can see the staggering described in the article.

I made some measurements of voltages needed to produce low, medium and high audio on typical earbuds and they're remarkably small.  A faint sound was 7 mV rms, 3.1 uW.  Moderate was 29 mV rms, 50 uW, louder was 57 mV rms, 0.36 mW.  This was into a 16 ohm earbud.

I substituted a 100k pot for R11 and R12 as suggested in the manual. 

Since line levels can be a couple of volts, I had some concern about overdriving the stages in some instances, so I added an 11:1 divider (10k series, 1k shunt) to the front.  There's still plenty of gain for sure even after that ~20 dB reduction.

72-

Nick, WA5BDU

n 4/22/2013 8:28 PM, Dennis Gaskill wrote:

 

Nick;
I think I remember what was going on ...........
 
If you look at the schematic, the resistors  R1, R2, R11, R12 are set up for 30 db gain. Refer to the table for setting gain on page 2 in the manual.
When they created the Center Frequency Table, I think they were looking at the schematic........
The only difference between 0 db and 30 db is that you swap R1 and R3...........
R3 and R11 and R12 are not in the Center Frequency Table, therefore R1 is all we have to worry about for gain.
One more factoid; the different center freqs are found by scaling the resistors by the same ratio as the freq ratio.
Example: If we are moving the center freq from 700 to 640 then the ratio is 700/640 = 1.094 
So if R1 was 33K at 700 Hz the R1  at 640 Hz would be 1.094 * 33K = 36 K
And at long last if R1 is 1meg * 1.094 = 1.094 meg for R1.............
I would just leave it at 1M .....it won't make that much difference, unless you are going for 500 Hz.
Sorry for the long winded explanation...............and sorry this took so long to reply.
 
For My money I would leave it at 700 Hz. Will 70 hertz make enough difference to justify scrounging up the new resistors?
I am just Lazy
Dennis KC0IFQ
 
Sent: Friday, April 19, 2013 6:39 PM
Subject: [4sqrp] HY-PER-MITE parts question

 


I picked up a HY-PER-MITE filter kit at OzarkCon and am getting ready to
put it together. Checking out the configuration options first.

The instructions for the center frequency say to use R1 = 36k for the
640 Hz option (versus 33k for the 700 Hz standard center).

The assembly instructions for setting gain say that for a gain of 0 dB,
R1 = 1M.

How do I reconcile the two for 640 Hz and 0 dB? Could one of these be
referring to something other than R1?

72-

Nick, WA5BDU




RMR net 14.0625 2045z

Dale Putnam
 

I am taking my 2nd harmonic to SAWS testing today, he is supposed to finish about 30 minutes before the
net starts. It's going to be close, and I'll do my best, if I don't make it someone else is certainly welcome to call it.
 
General net, not formal, shoot, the only "Q" signal used is the one to call for checkins.
So, come on by, and with a bit of luck, props will work for us.
See you then,

Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 
80M Cw Checkins

WA0ITP
 

It was a little rough on 80 last night.  The A index was 19 so propagation wasn't so hot.  But several signals pierced the aether. AA7EQ was a first timer, thank you Robert, and thanx to all who tried.  Propagation should be better next week.
 
Making it thru the absorption were:
 

1:02

N5JKY

 Mike

 OK City, OK

1:03

AC0BQ

 Johnny

 Lebo, KS

1:06

AA7EQ

 Robert

 Walnut Ridge, AR

1:09

KI8R

 Mike

 Lancaster, OH

1:11

W0CH

 Dave

 Seneca, MO

1:13

W0IIT

 Bart

 Pittsburg, KS

----------------------------------
I love this radio stuff !
72   WAØITP
www.wa0itp.com
www.4sqrp.com
 
 
 
Re: Wed, night PSK checkins

Johnny AC0BQ
 

I am gonna be there next week Dick!
73
Johnny AC0BQ


On Wed, Apr 24, 2013 at 9:31 PM, Virgil R. Hammond <n0tgr@...> wrote:
 

Wed. Night  PSK  Checkins:
 
KA0KRN  David, Ottumwa, IA
AC0WZ  Dan,  Fulton, MO
KC0IFQ Dennis, Augusta, KS
 
Good band, no noise just missing  checkins.
N0TGR Dick, Augusta, KS  NCS
Wed, night PSK checkins

Virgil R. Hammond <n0tgr@...>
 

Wed. Night  PSK  Checkins:
 
KA0KRN  David, Ottumwa, IA
AC0WZ  Dan,  Fulton, MO
KC0IFQ Dennis, Augusta, KS
 
Good band, no noise just missing  checkins.
N0TGR Dick, Augusta, KS  NCS
Re: Thanks to all de KH6BB (Op. WD9F)

Johnny AC0BQ
 

Rock on Woody!
I wish I could have been on the air, I would have loved to work you.
73 from KS
Johnny


On Tue, Apr 23, 2013 at 7:11 PM, Woody Hester <fghester@...> wrote:
 

Band conditions to CONUS were very poor this morning. High noise level and most sigs very weak. Put in about two hours of operating on 12, 15, 17 and 20. Made about twenty Qs and happy to work Terry (WA0ITP) at about an S-3. We were running 100W on 12 and 17 and 400W on 15 and 20 into the Discone antenna on the ship's bow. Thanks to those We worked, those who tried and thanks to my awesome BMARC host Bill (KH6OO). We had a great time operating and exploring Mighty Mo (behind the scenes with flashlights!) 72 / 73!

sent via mobile mail
Re: Mystery project

Tom Sevart <n2uhc@...>
 

On 04/24/2013 11:48, Dave AA7EE wrote:




The VRX-1 didn't have a 10MHz crystal - you must have already done some
experimenting with it!
Yeah I think I was interested in turning it into a WWV receiver.

--
Tom Sevart N2UHC
St. Paul, KS
Tonites 40m Net

Wayne Dillon
 

Sorry folks I will not be able to make it this evening.
God bless de Wayne - KC0PMH

--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192
Re: Mystery project

davidgeorgerichards
 

The VRX-1 didn't have a 10MHz crystal - you must have already done some experimenting with it!

Happy modding/experimenting :-)

Dave
AA7EE

Well I made sure to write "VRX-1" on the bottom side of the PC board so I won't forget what it is again. Now to experiment with it...

Tom Sevart N2UHC
St. Paul, KS
Re: Mystery project

Tom <n2uhc@...>
 

Well I made sure to write "VRX-1" on the bottom side of the PC board so I won't forget what it is again. Now to experiment with it...

Tom Sevart N2UHC
St. Paul, KS
Re: Mystery project

Michael McShan <n5jky@...>
 

Obviously, I need more coffee this morning before I makes replies!

72,
Mike N5JKY

On Apr 24, 2013, at 8:55 AM, Michael McShan <n5jky@me.com> wrote:

Maybe you were building something like the autodyne receiver Nick WA5BDU described:

https://sites.google.com/site/kennnick/autodynereceiver

Mike N5JKY
OK City

On Apr 23, 2013, at 9:11 PM, Tom Sevart <n2uhc@rlrnews.com> wrote:

On 04/23/2013 20:59, Robert 'RC' Conley wrote:

sounds like the VRX-1 receiver
I was thinking SS-40, but the schematic and parts list is vastly
different. I thought it was the SS-40 I did a beta build on, but now I
remember I beta built the VRX-1 and I replaced the crystal with a 10.000
MHZ crystal to see if I could pick up WWV on it. I don't remember if I
changed some of the other components for 10 MHZ or not.

--
Tom Sevart N2UHC
St. Paul, KS


------------------------------------

4SQRP Website: http://4sqrp.com
OzarkCon is coming April 4-5, 2014 in Branson, MO
View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links




------------------------------------

4SQRP Website: http://4sqrp.com
OzarkCon is coming April 4-5, 2014 in Branson, MO
View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
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