Date   

RMRc today 14.0625 2200z

Dale Putnam
 

There is a Dr. requesting my appearance today at 2100z... therefore, I might be just a few minutes late...
IF I am, please start without me.. Talk to one another.. and have some good practice.
I'll get back as soon as I can.

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


Re: LT SPICE circuit draw and simulate program DOWNLOAD

glene77is@...
 

Nick, WA5BDU
I was surfing, and noticed this topic,   which I left un-answered.  
You have always responded kindly, and with great technical expertise,  right to the point 
... and deserve a  respectful response. 

I have read all my books on Electronic Theory (as best I can after a lapse of many decades) 
and all other material I can locate, gleaning ideas on active filter circuits that might aid in CW ops. 
I have been using K7MEM.com  Martin Memserve's website and the PartSIM.com  ngSPICE website. 
Lots of thinking, planning, and modeling.   
Both sites have been very helpful.  
Projects of the last year are posted at my website, below. 

Of interest in the HiPerMite funtionality topic: 
I went on to design a MultiFeedBack BandPass circuit, 3 stages, with Butterworth curve.
First two stages are parallel, offset by +/- 50 Hz ( 650 and 750) and followed by a Q=2 Summer stage. 
BandPass is 200, 300, 400 Hz, at the -3dB, -6dB, -9dB levels.  Q per stage is 4, 4 and 2 for the Summer. 
This approach is tolerant to component variations of 10%, 
and is easily re-tuned via the R2 sink-source to virtual ground.  
(  I added a final #4 stage of Q4, with variable f(), +/-200 Hz, 
re-tuned via the R2 sink-source to virtual ground.  credits to Martin Memserve)
.
These specs are similar to the HPM this group has developed.   
But, not part of what this group is about, 
so let me just refer you to my website at www.GeoCities.WS/glene77is   
if you want to peruse my projects.  
The project name is "P2SQ", under "Electronics".  

Need to get back to building more components onto the perfboards.   
Not my forte. 

Glen Ellis, KK4LPG


FS price adjustment

Dale Putnam
 

FOR Sale:
$15 NorCal SMT dummy load, with the monitor diode. Works great.. is a fine addition to your shack, already built and ready to use. 
$35 ea.Elecraft XG1 on 7.040 Fully functional, and ready to go to work for you. (IF you want to use another freq.... just change xtals)I may have the one you're looking for....just ask.
I have two of these with good batteries, I'd expect you'd only need one...although I used two for quite a while. (didn't have to change xtals.)
I'll ship priority flat rate.. these will fit fine into a small Flat rate to an address in the US. 
Paypal, check, mo, all fine. 
Thank you for looking,

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


Re: What tools do you recommend for the small components ?

Cliff Fox (KU4GW)
 

I think I'd buy from someone else if it were me A.J.! The company selling these has a whopping 33 negative feedbacks in only 1 month! I've been buying and selling on Ebay for years and that's the worst negative feedback record I've ever seen! A pair of curved tip and straight tipped hemostats are 2 tools I keep. I usually see them at every hamfest I attend. They're not only good for handling small parts, but come in handy too in that you can clamp them shut near a component and use them as a heatsink while soldering near it to prevent damaging the component from excessive heat. Also, one of the most helpful tools I've found is a pair of the Helping Hands with the magnifying glass on it to hold small PC boards for me when soldering components onto it. They're really cheap at Harbor Freight Tools if you have one in your area.

Very 72,
Cliff - KU4GW
4SQRP#536


Re: Dell 440 crashed - anybody want the parts?

Adrian Flynn
 

Hi Uncle Phil,
OK, I would be interested what do you think shipping to 48906 would cost?
My XYL demands these answers if I want to eep her happy.
72/73
Adrian KF7DYU


On Mon, Jun 9, 2014 at 6:10 PM, Phil Anderson aldenmcduffie@... [4sqrp] <4sqrp@...> wrote:
 

Hello Guys, 060914

About 9 months back I had a crash on my XPS-420 Dell Desktop computer.
Finally got around to taking out the Seagate hard drive and drilling it for the
trash. Momma wants me to "clean" the shack, hi.

So, what do I do with the frame and the rest of the innerds? I see some
RAM cards plugged into the motherboard. There is also a floppy drive in
the case plus the usual fans and power transformer. Anybody want any of this
at $0?



Dell 440 crashed - anybody want the parts?

Phil Anderson
 

Hello Guys, 060914

About 9 months back I had a crash on my XPS-420 Dell Desktop computer.
Finally got around to taking out the Seagate hard drive and drilling it for the
trash. Momma wants me to "clean" the shack, hi.

So, what do I do with the frame and the rest of the innerds? I see some
RAM cards plugged into the motherboard. There is also a floppy drive in
the case plus the usual fans and power transformer. Anybody want any of this
at $0?

Sure looks different as compared to my ole Apple IIe, hi.

Don't worry; my new Dell Optiplex 7010 desktop has been up and running
for some time now. Added the AC4.6 logging program recently and like it. Also
installed Chrome and like it better than the Explorer.

On another front, Bart clew'd me in on www.dxmaps.com. So......
Caught JW7QIA on 17 meter DX the other day; logged him in on EQSL,
LoTH, and sent a QSL cause I really want that one!  He lives
right on the arctic circle, midway between the North Pole and Norway.
The island is called Svalbard; has about 2,600 inhabitants; 70% Norwegen,
the other 30% a mix of Ukrainians and Russians. You can go there in the
summer and rent their club station - even has a small hotel next door!
The air fair is a bit much and via Norway north! hi. 73.

Uncle Phil, W0XI


Re: Brutus Bash 2014? - for sure date?

Jeremy Utley
 

Brutus is always held the second full weekend of September, at least according to my knowledge.  So for this year, that would be Sept 12/13/14 (Fri/Sat/Sun).  Am really looking forward to it again this year!

Jeremy, NQ0M


On Mon, Jun 9, 2014 at 2:01 PM, Arnie Grubbs ka0ncr@... [4sqrp] <4sqrp@...> wrote:
 


Hi Group,

Just wanted to drop a line here to find out if the date for the Brutus Bash has 
been set up for sure.  Would like to be able to put in for  vacation for the correct
days...

So, if it is set 'for sure'.. please post, so I can get 'the paper work' taken care of.

Also, I hope that there is some interest in another "talegate" flea mkt.  Might have
a few items that others would be interested in..


Thanks!  and 73 - Arnie KA0NCR



Re: What tools do you recommend for the small components ?

Dale Putnam
 

They are the right shape Al, 
The question remaining is the quality of build and force needed to use..
IF the ends close every time with out going off center... and.. the force needed to close can be controlled exquisitely enough
so you can pick up a thread, and not lose it.. then hold a piece of paper vertically and gently pull it through the tool, stopping and starting 
without jerking it... they will work for you. They also, should exhibit NO magnetism.
I use Tec Econo.



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



To: 4sqrp@...
From: 4sqrp@...
Date: Mon, 9 Jun 2014 11:57:19 -0700
Subject: [4sqrp] What tools do you recommend for the small components ?

 
Ok, as i plan for winter building , yah a little early , but i want to be ready , i seen these tweezers on ebay-Stainless Steel Anti-static Nail Art Rhinestones Glitter Nipper Picking Tool MPH
  Oops did not mean to take up bandwith with pics etc, ok then, what Magnifying and vises Brands are working well, i will probably bolt mine down, my sight is ok, i use reading glasses, but with these small components i imagine strong power is utilized, so fill me and the other novice builders in -chime in , Thanks in advance , AJ W5heh


ps i tried to make some contacts for SS but 40 meters went down so fast , i will try again next month and utilize other bands as well.






Brutus Bash 2014? - for sure date?

ka0ncr
 


Hi Group,

Just wanted to drop a line here to find out if the date for the Brutus Bash has 
been set up for sure.  Would like to be able to put in for  vacation for the correct
days...

So, if it is set 'for sure'.. please post, so I can get 'the paper work' taken care of.

Also, I hope that there is some interest in another "talegate" flea mkt.  Might have
a few items that others would be interested in..


Thanks!  and 73 - Arnie KA0NCR


What tools do you recommend for the small components ?

W5HEH AJ
 

Ok, as i plan for winter building , yah a little early , but i want to be ready , i seen these tweezers on ebay-Stainless Steel Anti-static Nail Art Rhinestones Glitter Nipper Picking Tool MPH

  Oops did not mean to take up bandwith with pics etc, ok then, what Magnifying and vises Brands are working well, i will probably bolt mine down, my sight is ok, i use reading glasses, but with these small components i imagine strong power is utilized, so fill me and the other novice builders in -chime in , Thanks in advance , AJ W5heh


ps i tried to make some contacts for SS but 40 meters went down so fast , i will try again next month and utilize other bands as well.




Re: Updated Banner

W0IIT
 

"Going back to bed cuz these pneumonia meds are making
me a little weird…..

Ah, shouldn’t that be weirder?  Just a kidding:-)  I hope the meds are working and you are good as new quickly!!!!  Pneumonia is bad news and really isn’t a joking matter!!!!

Take care es 72!!

cu, Bart


Re: QRP Banner is online

W0IIT
 

Walter, you “da man”!! The Banner is a wonderful expression of QRP, in general, and the 4StateQRPGroup in particular!!!

cu es 72, Bart


Send in your score!

John Lonigro
 

It's Monday. If you didn't participate in the SSS last night, your next chance won't be until July.

If you DID participate in the SSS last night, don't forget to send in your results so I can tally them. You've got until midnight tomorrow (Tuesday) night to get them in. This is your only reminder to send in your score. Send an email with your results to:

SecondSundaySprint@...

Put "Sprint" in the subject line.

Don't "reply" with your results. This is my everyday email. I have a special one set up for sprints. Results should be posted around Wednesday.

As usual, I hope to get results published by Wednesday.

Thanks and 72,

John, AA0VE
SSS Coordinator


Re: Ideal Voltage & Current for K2

Don Wilhelm <w3fpr@...>
 

Darryl,

If you have the internal battery, the ideal voltage is between 14.3 volts and 15 volts.
If you exceed 15 volts, that is above the spec'ed maximum voltage, so you are 'own your own' should damage result.

Without the internal battery, 13.8 volts is good.
The K2 will receive fine down to 11 volts or less, but the transmit may have a higher IMD.

Note that the K2 is unique among amateur transceivers in its power control mechanism.  The power control is a closed loop that will attempt to maintain your requested power output (the power knob is not a drive control), so as the voltage drops, more current is required to maintain the power output level.  If the voltage drops too far, you may begin to see HiCur messages.

If you do not have the KAT2 or the KPA100 (or KAT100) installed, the power control is highly dependent on having a 50 ohm non-inductive load for proper power control because the RF power is computed from a diode detector only.  The KAT2, KAT100 and KPA100 options include a true wattmeter that eliminates that dependency on a 50 ohm load.

73,
Don W3FPR

On 6/8/2014 7:59 PM, kk5ib01@... [4sqrp] wrote:
 

I am feeding my K2 with a Samlex 1223 PS with variable voltage currently set at 15.0 volts, display shows 14.4 and 0.30 on receive and 14.1 and 1.80 running 5 watts into 50 ohm dummy load. I intend to run mostly 5 watts or less, with an occasional 10 watt max. What would be considered an ideal voltage setting, higher voltage that I have now ( max 15.0) with less current, or lower voltage and more current, or does it matter? Thanks.
Darryl, KK5IB




Re: Field Day Questions

Nick-WA5BDU
 

My experience has mostly been with some big (2000 A-Hr) batteries used in the power plant where I work. Plus assorted AGM batteries for the workbench and pesky garden tractor and car batteries.

Be sure we're saying the same thing when we talk about 50% or 100% discharge. Discharge should stop at a value of VPC (volts per cell) which is the knee of the discharge curve. Below that value, voltage drops rapidly toward zero, which is very bad for lead acid batteries. That value is typically about 1.8 VPC or for a "12 volt" battery, 6 * 1.8 is 10.8 volts. Discharge should be stopped at or before that voltage value.

After being discharged, the battery's plates are in a fragile state due to the chemical changes that occur during discharge. It's best to recharge them as soon as possible and avoid mechanical shocks while transporting them in a discharged state.

The power plant batteries I mentioned are kept on continuous float charge and are essentially never discharged, barring some unusual loss of normal AC power. They do get a discharge test every 18 months. In this ideal type of service they can last up to 20 years or more.

72-

Nick, WA5BDU


Re: SSS Tomorrow night!

Louis Axeman
 

Thanks for the information, John.  I tried hovering, at least what seemed to me to be hovering, but nothing popped up.  Was not able to get in on SSS today anyway. 

73, Lou


On Saturday, June 7, 2014 8:47 PM, "WA0ITP wa0itp@... [4sqrp]" <4sqrp@...> wrote:


 
Hi Lou, hover over your call on the membership (operator) list page. It
pops up.

On 6/7/2014 8:13 PM, Louis Axeman n8la@... [4sqrp] wrote:
> I forgot my 4sqrp membershipumber.
>
> Lou N8LA
> --------------------------------------------
> On Sat, 6/7/14, 'John R. Lonigro' jonigro@... [4sqrp] <4sqrp@...> wrote:
>
> Subject: [4sqrp] SSS Tomorrow night!
> To: "4SQRP" <4sqrp@...>
> Date: Saturday, June 7, 2014, 11:31 AM
>
>
>
>
>
>
>
>
>
>
>
>
> DON'T FORGET!!!
>
>
>
> The Second Sunday Sprint is tomorrow, 7:00 - 9:00 PM CDT.
> If you've
>
> misplaced the rules, they are posted on 4SQRP.COM, under
> "4SQRP On Air
>
> Activities". And they haven't changed lately.
>
>
>
> Good luck in the contest!
>
>
>
> 72, John AA0VE
>
> SSS Coordinator
>
>
>
>
>
>
>
>
>
>
>
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>
> ------------------------------------
> Posted by: Louis Axeman
> ------------------------------------
>
> 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
>
>
>
>

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




Re: Ideal Voltage & Current for K2

random.path
 

I run mine at 12.0 volts. That gives plenty of overhead for even high power operation. You can run it lower if you are staying qrp cw, though. Having it higher means internal regulators just have to dissipate that much more power as waste heat.

If voltage is too low, then transmit distortion and intermodulation products on SSB can increase. This would be less of a problem with CW, I think.

Chip
AE5KA


On Sun, Jun 8, 2014 at 6:59 PM, kk5ib01@... [4sqrp] <4sqrp@...> wrote:
 

I am feeding my K2 with a Samlex 1223 PS with variable voltage currently set at 15.0 volts, display shows 14.4 and 0.30 on receive and 14.1 and 1.80 running 5 watts into 50 ohm dummy load. I intend to run mostly 5 watts or less, with an occasional 10 watt max. What would be considered an ideal voltage setting, higher voltage that I have now ( max 15.0) with less current, or lower voltage and more current, or does it matter? Thanks.
Darryl, KK5IB




Re: Updated Banner

Paul Smith
 

Great read Walter tnx.

de Paul N0NBD

Sent from my iPad

On Jun 8, 2014, at 11:28 AM, "Walter - K5EST walter.k5est@... [4sqrp]" <4sqrp@...> wrote:

 

OK.....now the Date header is changed, June vs May !

Thanks guys that had my back so the change could be made.

If you forward the Banner or keep copies, then you may want
to download the corrected copy.

Going back to bed cuz these pneumonia meds are making
me a little weird......72...WAlter - K5EST


Ideal Voltage & Current for K2

Darryl J Kelly
 

I am feeding my K2 with a Samlex 1223 PS with variable voltage currently set at 15.0 volts, display shows 14.4 and 0.30 on receive and 14.1 and 1.80 running 5 watts into 50 ohm dummy load. I intend to run mostly 5 watts or less, with an occasional 10 watt max. What would be considered an ideal voltage setting, higher voltage that I have now ( max 15.0) with less current, or lower voltage and more current, or does it matter? Thanks.
Darryl, KK5IB



Re: Handy vise - good buy

Johnny AC0BQ
 

Thanks Ray
72
Johnny AC0BQ


On Sunday, June 8, 2014, rcadmus@... [4sqrp] <4sqrp@...> wrote:
 

Some time back the builders among us were excited about the closeout Panavise at RS.  Not quite the same but Lowes is closing out Bessey clamps and I saw their vacuum base swivel vise (like Panavise) for $6.95 if I recall correctly.


Since I already have a Panavise Ididn't need one - however,  I did scoop up a bunch of the small clamps for my woodworking.


Regards,


ray W0PFO




--
QRP....."more smiles per watt"
72
JOHNNY AC0BQ  ..