Date   

SS-40 40M Receiver Kits

Tom Clifton
 

I note they are currently out of stock. Any Chance they will be available at OzarkCon?


Re: Pig Rig troubleshooting question

Johnny AC0BQ
 

Gm Joe:
I would look at the signal levels on the output transistors  with a scope or Rf Probe. They are in a table at the end, listed in the addendum.
I will look for a pic of T1 that Diz sent me.
Other than that, kinda sounds like a common mistake in the ant input portion of the rig??
Mabey put a sig gen on the antenna and chase it back??
Good luck 
Johnny AC0BQ


On Sunday, March 31, 2013, cornhusker wrote:
 

OK, folks...I got mine all together, and it can hear (barely!) and transmits (also barely!). I can hear it transmit in my Kenwood receiver, and if I key my Kenwood, I can hear it in the PigRig. But, connected to an antenna, the PigRig hears no outside signals or band noise at all. Also in transmit there is no measurable RF output, yet my big rig connected an an outside antenna hears it clearly, but only about S5. I am able to peak its receiver from my big rig signal, set the freq to 7030.7 and the keyer, offset, etc. works fine. Plenty of loud sidetone audio in the speaker and good received audio from my big rig transmitting a watt nearby into a dummy load or into outside antenna. So, my guess is that all is fine except of maybe one of the transformers...maybe T1? Any guesses?
Thanks!!
73 de Joe K0NEB


PigRig bandpass

random.path
 

Here is a screenshot of my PigRig audio output with wideband noise input:

http://s1225.photobucket.com/user/chipper74/media/pigrig_bandpass.jpg.html?sort=3&;o=0

I've debated getting a HiPerMite or Elecraft AF1 kit to clean it up, but then I kind of like the idea of using it as built.

Chip


Re: Pig Rig troubleshooting question

Bill Cromwell
 

On Sun, 2013-03-31 at 23:42 +0000, cornhusker wrote:

OK, folks...I got mine all together, and it can hear (barely!) and
transmits (also barely!). I can hear it transmit in my Kenwood
receiver, and if I key my Kenwood, I can hear it in the PigRig. But,
connected to an antenna, the PigRig hears no outside signals or band
noise at all. Also in transmit there is no measurable RF output, yet
my big rig connected an an outside antenna hears it clearly, but only
about S5. I am able to peak its receiver from my big rig signal, set
the freq to 7030.7 and the keyer, offset, etc. works fine. Plenty of
loud sidetone audio in the speaker and good received audio from my big
rig transmitting a watt nearby into a dummy load or into outside
antenna. So, my guess is that all is fine except of maybe one of the
transformers...maybe T1? Any guesses?
Thanks!!
73 de Joe K0NEB
Hi Joe,

I don't have a rig like yours except that all of mine have wires, and
other gizmos between the wires, too. What about an accidental solder
bridge? What about a cold solder joint or one not even soldered at all?
Your local oscillator is working or you wouldn't be hearing your "big
rig" and it wouldn't be hearing your pig thingie. Cracked circuit board
trace (open)?

73,

Bill KU8H


Re: Pig Rig troubleshooting question

cornhusker
 

Charlie,
I get the 300mv of LO signal at pin 6 of the NE602, so my guess is the LO is OK, just not gettting enough coupling going on...that is why I am suspicious of one of the transformers, just gotta figure out which one.  Thanks!!  Have fun building!
73 de K0NEB

From: "Charlie , W5COV"
To: 4sqrp@...; cornhusker
Sent: Sunday, March 31, 2013 7:02 PM
Subject: Re: [4sqrp] Pig Rig troubleshooting question
Since I am waiting to finish mine , until we get the other crystals all I can do is offer a couple of suggestions .
 
We have the local oscillator which would be common to both of the major problems that you describe .
 
Once I finish mine , I plan on making up a voltage troubleshooting sheet to go with the schematic and board layout .
 
I do that these days whether it is homebrew or on the rare occasion when I build a kit . I often build extras of my projects for friends all over the country , so in the event of problems , it makes it easier for them and for me to help them troubleshoot if a problem does arise .
 
I have been quite impressed with this particular kit in that there have been very few , if any questions being asked about it once it is completed .
 
There have been several questions about the transformers during construction , but I find that pretty normal , even just winding a single layer toroid on many kits .
 
Perhaps some one already has a voltage troubleshooting diagram or list already started or completely available for the pig rig .
 
Looking forward to getting mine completed and putting it in its Ten Tec pen .
 
Does anyone know if Diz sold out of them ? I am also looking forward to the next run to see if I want to build another kit . I have plenty of equipment already , but an 80 meter version to go with this 40 meter version to leave out at the farm , when I am working and staying out there would be nice .
 
For some reason I haven't been on 80 meters in a couple of years or more , so it would also motivate me to get back on and check into some nets . Nice place to use a NVIS antenna , since I have never given one of them a try .
 
Charlie , W5COV
 

 
OK, folks...I got mine all together, and it can hear (barely!) and transmits (also barely!). I can hear it transmit in my Kenwood receiver, and if I key my Kenwood, I can hear it in the PigRig. But, connected to an antenna, the PigRig hears no outside signals or band noise at all. Also in transmit there is no measurable RF output, yet my big rig connected an an outside antenna hears it clearly, but only about S5. I am able to peak its receiver from my big rig signal, set the freq to 7030.7 and the keyer, offset, etc. works fine. Plenty of loud sidetone audio in the speaker and good received audio from my big rig transmitting a watt nearby into a dummy load or into outside antenna. So, my guess is that all is fine except of maybe one of the transformers...maybe T1? Any guesses?
Thanks!!
73 de Joe K0NEB


Re: Pig Rig troubleshooting question

Charlie Vest
 

Since I am waiting to finish mine , until we get the other crystals all I can do is offer a couple of suggestions .
 
We have the local oscillator which would be common to both of the major problems that you describe .
 
Once I finish mine , I plan on making up a voltage troubleshooting sheet to go with the schematic and board layout .
 
I do that these days whether it is homebrew or on the rare occasion when I build a kit . I often build extras of my projects for friends all over the country , so in the event of problems , it makes it easier for them and for me to help them troubleshoot if a problem does arise .
 
I have been quite impressed with this particular kit in that there have been very few , if any questions being asked about it once it is completed .
 
There have been several questions about the transformers during construction , but I find that pretty normal , even just winding a single layer toroid on many kits .
 
Perhaps some one already has a voltage troubleshooting diagram or list already started or completely available for the pig rig .
 
Looking forward to getting mine completed and putting it in its Ten Tec pen .
 
Does anyone know if Diz sold out of them ? I am also looking forward to the next run to see if I want to build another kit . I have plenty of equipment already , but an 80 meter version to go with this 40 meter version to leave out at the farm , when I am working and staying out there would be nice .
 
For some reason I haven't been on 80 meters in a couple of years or more , so it would also motivate me to get back on and check into some nets . Nice place to use a NVIS antenna , since I have never given one of them a try .
 
Charlie , W5COV
 


 

OK, folks...I got mine all together, and it can hear (barely!) and transmits (also barely!). I can hear it transmit in my Kenwood receiver, and if I key my Kenwood, I can hear it in the PigRig. But, connected to an antenna, the PigRig hears no outside signals or band noise at all. Also in transmit there is no measurable RF output, yet my big rig connected an an outside antenna hears it clearly, but only about S5. I am able to peak its receiver from my big rig signal, set the freq to 7030.7 and the keyer, offset, etc. works fine. Plenty of loud sidetone audio in the speaker and good received audio from my big rig transmitting a watt nearby into a dummy load or into outside antenna. So, my guess is that all is fine except of maybe one of the transformers...maybe T1? Any guesses?
Thanks!!
73 de Joe K0NEB


Pig Rig troubleshooting question

cornhusker
 

OK, folks...I got mine all together, and it can hear (barely!) and transmits (also barely!). I can hear it transmit in my Kenwood receiver, and if I key my Kenwood, I can hear it in the PigRig. But, connected to an antenna, the PigRig hears no outside signals or band noise at all. Also in transmit there is no measurable RF output, yet my big rig connected an an outside antenna hears it clearly, but only about S5. I am able to peak its receiver from my big rig signal, set the freq to 7030.7 and the keyer, offset, etc. works fine. Plenty of loud sidetone audio in the speaker and good received audio from my big rig transmitting a watt nearby into a dummy load or into outside antenna. So, my guess is that all is fine except of maybe one of the transformers...maybe T1? Any guesses?
Thanks!!
73 de Joe K0NEB


Re: sub

Donald Kelly
 

I was going to suggest the J310 also. There are some characteristics of a standard J310 that make them a little “better” than the MPF102. One being lower input C and often a higher dissipation.  http://www.mouser.com/ds/2/308/J309-D-109346.pdf         

 

 

Not all the old mpf102’s were same. Radio Shack used to buy them from various foreign manufacturers. None of them looked the same, often unmarked and the characteristics were often slightly different. But not different enough to make any change in the circuit. I used them for Oscillators, buffers and switches and could sub a J310 for any of these. Precise characteristics are not necessary for many of these applications.

 

 

I like Fairchild or at least I have quite a few.

http://www.ebay.com/itm/100x-J310G-Fairchild-N-Channel-JFET-Transistor-J310-RF-VHF-UHF-Amplifier-TO-92-/150779353107?pt=LH_DefaultDomain_0&hash=item231b265813

 

K5UOS

 

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of Jerry Haigwood
Sent: Saturday, March 30, 2013 5:07 PM
To: 4sqrp@...; 'Barney'
Subject: RE: Re: [4sqrp] sub

 

 

You can also check with Futurlec.com.  However, the part will be coming from Hong Kong so it will take about 20 days to get here.  B & G micro in Dallas has a number of FETs also.  BTW, I quit using the MPF 102 a long time ago.  For RF I typically use the J310 or the 2N5486.  I have a bunch of 2N3819s that I use when I am not too concerned about performance.

Jerry W5JH

"building something without experimenting is just solder practice"

 

 

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of Barney
Sent: Saturday, March 30, 2013 11:46 AM
To: 4sqrp@...
Subject: Fwd: Re: [4sqrp] sub

 

 

 





Hi Jerry;

     Where do you get them?  I had heard that the 102 was obsolete, and Mouser lists them that way and they don't show up
at Allied Electronics.  Jameco does have them!

     Thanks for the info on the subs..

Barney


On 3/30/2013 10:40 AM, Jerry Haigwood wrote:

Why do you need a sub?  The MPF102 is still available.  If you really want a sub, you can use just about any n channel JFET as a sub.  The MPF102 is the 2N2222 of the JFET world.  You could use a 2N3819, 2N5484, 2N5485, 2N5486, etc.

Jerry W5JH

"building something without experimenting is just solder practice"

 

 

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of Barney
Sent: Saturday, March 30, 2013 10:26 AM
To: 4sqrp@...
Subject: [4sqrp] sub

 

 


I wonder what xstr will sub for a MPF102?

Barney

 

 


RM to RM

Mike
 

Hello everyone. I had a real good night using my Rockmite 20. 3 2X QRPs back to back. Sweet! The icing on the cake was a call from N3RUA vacationing in Moad, UT and using his RM 20 at .3W. My first RM-RM and his also. That also makes my first QRPP-QRPP QSO. What a great hobby. An old fashioned QSL card is forthcoming. :)

Hams are always looking for new avenues to explore the ether. QRP is one of them. It also brings back the days of home-brewing albeit mostly kit form now. That really doesn't matter because way back when most of us would build our home-brewed stuff from plans published in CQ or QST anyway.

On the subject of kits, my Pig Rig arrived last week and I'm anxious to get it up on the air. It will be awhile because I already have two projects ahead of it....and I'm real slow.

I really enjoy reading the posts of this forum...good stuff.

72
Mike Morris
KF5RAU


Re: PigRig and HPM

random.path
 

I did a little test with my PigRig #147. I attached an Elecraft Ngen broadband noise generator to the antenna input, and ran the audio output into my Signalink USB sound "card". Looking at the output with Spectrogram, you can see the filter shape.

I'll try to provide a link to a screenshot later, but it looks like the ultimate rejection of the crystal filter is only about 30db at audio frequencies above the passband. It has very wide skirts too. This means you'll hear plenty of signals outside of the 500 Hz passband, but hopefully they won't be too intrusive.

Given the simplicity and cost of this little transceiver, I'm certainly not going to complain, but you can't expect too much!

Chip

--- In 4sqrp@yahoogroups.com, Stephen Roberts <steverob@...> wrote:

I just fired up my pig rig for the first time and still haven't tuned it in but it sends and receives close to the target freq. I heard a lot of background noise and I think the bandpass needs tweaking as there seemed to be a number of stations on the freq, so I think that needs some adjustment. I have a hyper mite and haven't used it, but as I just listened to 40 with the pig rig, I immediately thought it might be a great addition. Glad to hear that you tried one. Can you tell me how you have your Hipermite set up?

73
Steve
W1SFR



On Mar 30, 2013, at 7:04 PM, WA0ITP wrote:

I just stuck the Hi_per_Mite on the pigrig. Man does it ever clean up the
sidetone. Lots of QRN on 40 today so it's probobly not a fair test of the HPM
but it sounds vy good so far.

Anyone else using this combo today?

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


Re: Piggie mine

Johnny AC0BQ
 

CONGRATS JIM!
Welcome to the 4SQRP/PIG RIG CLUB.
72
Johnny AC0BQ


On Sun, Mar 31, 2013 at 8:54 AM, kd5kj <brookranger@...> wrote:
 

Piggie #209 is squeeling fine, glad she's mine.
Cu ay OZARKCON,,,

Jim kd5kj



Piggie mine

kd5kj <brookranger@...>
 

Piggie #209 is squeeling fine, glad she's mine.
Cu ay OZARKCON,,,

Jim kd5kj


Re: PIG RIG SN 168 HAS COME TO LIFE

Johnny AC0BQ
 

Congrats Bert 
Signals were weak on 40 but good copy
Nice tone and on freq.
72
Johnny
AC0BQ


On Saturday, March 30, 2013, qrpbert wrote:
 

Well #168 has officially squealed and been heard by Johnny AC0BQ, and the little fella successfully detected Johnny's signal and relayed it to my ears like a good little pig should, this was in spite of my best efforts to make it difficult, and after replacing the parts I managed to destroy, and adding a wire or two to replace the traces I mangled. Many thanks to DIZ for sending me a care package of replacement parts at his cost, I tried to pay him more and he wouldn't take it, excellent customer support, and an honest business man. Now I have to put it in its pen, and move it to 7.122 when the rocks arrive. I wonder what I can do to make that difficult, I am sure something will come to me, it always does.


Re: Te-Ne-Ke paddle

Tim N9PUZ
 

On 3/30/2013 4:30 PM, WA0ITP wrote:
Been playing with a new Te-Ne-Ke, an entirely different paddle design, with
different feel.
I think Dennis Foster KK5PY sold these, or something similar, many years
ago at OzarkCon in Joplin.

Anyone else have one and if so how do you like it?
I bought one from Dennis a long time ago. Wonder where I have it stashed away?

Tim N9PUZ


Chkd 40M b4 goin to bed

davemrtn
 

Plugged in the Rockmite 40 to listen to 7040 for a minute before going to bed.

Heard a bunch of signals and a really strong one 'on freq', but I just couldn't listen long enough to catch callsign, etc.

There's just something very discomforting about wearing a pair of headphones connected to a radio connected to a G5RV during a BIG Thunderstorm !!!

--
*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: sub

Barney <barneyro@...>
 

Thanks Nick. 

     Here is one I've bought from before.  They have free shipping and the prices are pretty good.  I wonder about the quality at times.  Most of the things we buy are from over there anyway though.

http://www.taydaelectronics.com/catalogsearch/result/?q=mpf102

     I had a project that called for 102's and I had none.  I didn't know what to sub for them as I haven't had a lot of experience building with solid state




On 3/30/2013 7:11 PM, Nick-WA5BDU wrote:
 

What I've heard from the smart guys is that the MPF102 is specified with a pretty broad range of parameters, so lots of other JFETs will fit between those ditches.

I'm liking the 2N3819 too.  I bought 25 from Mouser for 9 cents apiece a while back.

A quick eBay check shows quite a few MPF102s.  One outfit I'm familiar with is Nightfire Electronics.  They sell a "kit" of 10 MPF102s for $8.99 and throw in a bunch of other components and a little perf board to fill out the "kit" idea.  Not bad if your junk box is a little light.

http://www.ebay.com/itm/MPF102-RF-FET-Transistor-Design-Kit-1-1600-/370291579514?pt=LH_DefaultDomain_0&hash=item5637191a7a

72-

Nick, WA5BDU

 

 


I wonder what xstr will sub for a MPF102?

Barney

 





Re: Soldering station advice

Dan Reynolds
 

Depending on how much a hurry you are and what hamfests you have access to you might look around for a Metcal. I traded some stuff for one and it is the best solder station I've ever touched. I've used some high end Wellers and an old but good Unger (I'm not a tech or an expert). But the Metcal is a solid dependable setup. And is very expandable depending on which model you get.
I could NEVER afford to buy one new. But there are quite a few in the used market and especially with the downturn in the economy.
It is definitely the Rolls Royce of soldering stations...
73
Dan -- KB9JLO


Re: PIG RIG SN 168 HAS COME TO LIFE

WA0ITP
 

Congrats Bert!

----------------------------------
I love this radio stuff !
72 WA�ITP
www.wa0itp.com
www.4sqrp.com
www.qrpspots.com

----- Original Message -----
From: "qrpbert" <e1dslr@gmail.com>
To: <4sqrp@yahoogroups.com>
Sent: Saturday, March 30, 2013 8:48 PM
Subject: [4sqrp] PIG RIG SN 168 HAS COME TO LIFE


| Well #168 has officially squealed and been heard by Johnny AC0BQ, and the
little fella successfully detected Johnny's signal and relayed it to my ears
like a good little pig should, this was in spite of my best efforts to make it
difficult, and after replacing the parts I managed to destroy, and adding a wire
or two to replace the traces I mangled. Many thanks to DIZ for sending me a care
package of replacement parts at his cost, I tried to pay him more and he
wouldn't take it, excellent customer support, and an honest business man. Now I
have to put it in its pen, and move it to 7.122 when the rocks arrive. I wonder
what I can do to make that difficult, I am sure something will come to me, it
always does.
|
|
|
| ------------------------------------
|
| 4SQRP Website: http://4sqrp.com
| OzarkCon is coming April 5-6 in Branson, MO
| View Details at http://www.ozarkcon.com/index.phpYahoo! Groups Links
|
|
|


Re: YU5A

Dan Reynolds
 

Thanks guys. I've been dying to get 1000 miles per watt on SSB.
And yes, Wayne, that darn old W3EDP wire did it again. I was actually going to go outside today and put that 9:1 balun in. I got too busy playing in the CQ WPX contest (not serious just couldn't resist the DX).
I must've had a half a dozen Cuba contacts!
Fun day. Now tomorrow I need to work on CW. Maybe after I put in the balun? Ha, ha!

73
Dan -- KB9JLO


PIG RIG SN 168 HAS COME TO LIFE

Robert
 

Well #168 has officially squealed and been heard by Johnny AC0BQ, and the little fella successfully detected Johnny's signal and relayed it to my ears like a good little pig should, this was in spite of my best efforts to make it difficult, and after replacing the parts I managed to destroy, and adding a wire or two to replace the traces I mangled. Many thanks to DIZ for sending me a care package of replacement parts at his cost, I tried to pay him more and he wouldn't take it, excellent customer support, and an honest business man. Now I have to put it in its pen, and move it to 7.122 when the rocks arrive. I wonder what I can do to make that difficult, I am sure something will come to me, it always does.