Date   

Re: Stuck capacitor

Phil Anderson
 

Hey guys, I keep new ones in stock on our crystal set society home page, see www.midnightscience.com:

air variables, 365, 365 with 8-1 reduction shaft drive built in, and dual 365 pf caps. Also have external 6-1 reduction drives available.

Happy days; and hope to see some of you in Dayton. Our booth is in the middle of the wood floor area.

Uncle Phil, W0XI....................booth 331 in silver arena....




John R. Lonigro wrote:


I have a "perfectly" good dual gang 400 pf variable capacitor from an
old Heathkit signal generator. The only part of it that is NOT perfect
is the fact that it is extremely difficult to turn. I cannot grab the
shaft and turn it by hand. It will turn if the shaft is clamped in a
vise. I'm hoping to attach a stepper motor to it and would like it to
turn a lot easier. I've tried oil, WD-40, solvent, and white bicycle
lube on both end bearings, but that didn't seem to help at all. The
center bearing, if there is one, is covered and not accessible.

Any suggestions before I break down and get a new one?

72,

John AA0VE


Re: Stuck capacitor

Todd K7TFC
 

Two thoughts. Try a product specifically formulated for penetration. PB Blaster, etc. Apply copiously every hour or so and let sit overnight. The other things you tried weren't meant for penetration, or they do not include agents to help loosen the stuck. That includes WD40, which leads to my second thought: don't use it on electronics or other precision gear. It was not formulated primarily as a lubricant but as a water-displacement coating. It does, in fact, leave a film which, over time, oxidizes into a sticky "varnish" (sort of like old gasoline can do). 

Years ago, I worked for an aerospace firm that used, and made, close-tolerance bearings, both rotational and linear, ultra-precision optics, and other rocket-science kind of stuff. WD-40 was banned from the plant. It wasn't just prohibited just from certain uses or applications, it was banned from the entire place. Machinists couldn't have it, plant maintenance could have it, and even the janitor couldn't have the stuff. Why? If any one had a can, it would eventually end up on some tech's bench, only to cause problems later. We could use silicones, teflon-based lubricants, or other fine polymer-free machine oil, but only if it was on a list approved by the chief engineer.

Don't get me wrong, WD-40 is great stuff. I used it the other day to free-up a pipe wrench I left in the rain all winter. Worked great. 

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design


On Tue, May 14, 2013 at 7:18 AM, John R. Lonigro <jonigro@...> wrote:
 

I have a "perfectly" good dual gang 400 pf variable capacitor from an
old Heathkit signal generator. The only part of it that is NOT perfect
is the fact that it is extremely difficult to turn. I cannot grab the
shaft and turn it by hand. It will turn if the shaft is clamped in a
vise. I'm hoping to attach a stepper motor to it and would like it to
turn a lot easier. I've tried oil, WD-40, solvent, and white bicycle
lube on both end bearings, but that didn't seem to help at all. The
center bearing, if there is one, is covered and not accessible.

Any suggestions before I break down and get a new one?

72,

John AA0VE



R6 resistor on Digital link kit

Stephen Roberts <steverob@...>
 

Ok, the instructions I downloaded says 330 ohm, the checklist with the kit says 100 ohm.

Which is it?

73
Steve


Re: Stuck capacitor

w2sh@...
 

John,

Try automobile brake cleaner fluid on both bearings to loosen it.  Then flush that out with WD-40.  Finally use a toothpick to put just a very little white lithium grease on both bearings.

If treating the bearings chemically doesn't loosen the shaft, it would seem that it is mechanically stuck somewhere.

72 es GL,

Charles, W2SH



To: 4sqrp@...
From: jonigro@...
Date: Tue, 14 May 2013 09:18:01 -0500
Subject: [4sqrp] Stuck capacitor

 
I have a "perfectly" good dual gang 400 pf variable capacitor from an
old Heathkit signal generator. The only part of it that is NOT perfect
is the fact that it is extremely difficult to turn. I cannot grab the
shaft and turn it by hand. It will turn if the shaft is clamped in a
vise. I'm hoping to attach a stepper motor to it and would like it to
turn a lot easier. I've tried oil, WD-40, solvent, and white bicycle
lube on both end bearings, but that didn't seem to help at all. The
center bearing, if there is one, is covered and not accessible.

Any suggestions before I break down and get a new one?

72,

John AA0VE


Stuck capacitor

John Lonigro
 

I have a "perfectly" good dual gang 400 pf variable capacitor from an old Heathkit signal generator. The only part of it that is NOT perfect is the fact that it is extremely difficult to turn. I cannot grab the shaft and turn it by hand. It will turn if the shaft is clamped in a vise. I'm hoping to attach a stepper motor to it and would like it to turn a lot easier. I've tried oil, WD-40, solvent, and white bicycle lube on both end bearings, but that didn't seem to help at all. The center bearing, if there is one, is covered and not accessible.

Any suggestions before I break down and get a new one?

72,

John AA0VE


RMR net - 2045z 14.0625

Dale Putnam
 

Let's find out where our cw is today. Check in with your own speed, and I will match you,
we'll chat a bit, and have a good time. To keep the rust off the key, it works!
No fancy Q signals, no roll call, it is easy.
I call "CQ RMR de WC7S" you answer with your full call
I recognize you with a call.
IF there are more than one calling, and I can grab the calls, I will respond with each call heard,
Then go to the first station for his turn. The others having been recognized will be called next.
 
Lets have a chat today!! 
and 2045z is 2:45pm MDT.  ( I have no idea what time it would be if it were Mountain Nightlight Time)

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


Re: navy knobs

kb4qqj
 

thumb on skirt, index on top of knob, middle on skirt. slight  squeeze pressure with middle and thumb to control rebound . Index controls down pressure. Just like the old manuals show. Has worked best for me. try several methods and see what gives you best result. Just don't become a "tapper". sounds funny on the dits....... hi hi
 
Randy_KB4QQJ
 

In a message dated 5/13/2013 2:52:31 P.M. Eastern Daylight Time, steverob@... writes:
 

I much prefer the navy knob and/or skirt. Index and middle finger on knob and thumb and ring finger on skirt

Steve Roberts

On Apr 18, 2013, at 1:01 PM, Dg Arnholt <dgarnholt@...> wrote:

 

guys I suppose I am un-American as a ham..i have a rough time sending with a navy knob..i'm used to the j 38 style knob.. how about suggestions as to where to put my fingers for better control:)
as all my current keys have the navy knob style..might as well learn it..tee hee..
ive improved, but its sloppy some times and I prefer good code after all these years.
I can read almost anything..a few guys I never got the call straight I guy in nj comes to mind.. once he sends his name and all you can read it..but is it kb2 ???? lol  one day i'll get it right send a qsl and always know tee hee 73 dennis
wd9dwe skcc 1564T hope to be back qrp very soon.


Re: 4SQRP at FDIM?

Jack Mcduffie
 

will be there Friday nite, will look for you all,73,jack,w8gpf (the new kid)

From: WA0ITP To: 4sqrp@...; ka0ncr
Sent: Saturday, May 11, 2013 8:37 AM
Subject: Re: [4sqrp] 4SQRP at FDIM?

Sounds like a great idea Arnie, we could meet at the club table.  It's in the
back left corner near the homebrew contest. I'l have a banner on the wall behind
the table.

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




----- Original Message -----
From: "ka0ncr" <ka0ncr@...>
To: <4sqrp@...>
Sent: Friday, May 10, 2013 11:42 PM
Subject: [4sqrp] 4SQRP at FDIM?


| Hi Group,
|
| Just was wondering if there were going to be very many from the 4SQRP group
going to the Four Days In May FDIM  gathering next week?
|
| I would like to try to get a picture of the whole group, or at least several
pictures of some of the group if we can't get everyone in the
| same place at the same time. This 2nd case will probably be more likely!
|
| I will be there Thursday night for the vendor night, and can take some
pictures of our group as they show up at the table.  I suppose that
| the best time to do this would be after the build-a-thon lets out?
|
| I thought that I would throw this out to the group, and see what kind of
response I get.  I would like to send the pictures into the OzarkCon banner, and
everyone who shows can be in the newsletter..
|
| On the other hand,  If everyone thinks it is a bad idea, I will probably not
do it...
|
| Thoughts?    Please post..
|
| 73 - Arnie KA0NCR
|
|
|
| ------------------------------------
|
| 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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Re: 4SQRP at FDIM?

Jim Kortge
 

On 5/11/2013 12:42 AM, ka0ncr wrote:
Hi Group,

Just was wondering if there were going to be very many from the 4SQRP group going to the Four Days In May FDIM gathering next week?

I would like to try to get a picture of the whole group, or at least several pictures of some of the group if we can't get everyone in the
same place at the same time. This 2nd case will probably be more likely!

I will be there Thursday night for the vendor night, and can take some pictures of our group as they show up at the table. I suppose that
the best time to do this would be after the build-a-thon lets out?

I thought that I would throw this out to the group, and see what kind of response I get. I would like to send the pictures into the OzarkCon banner, and everyone who shows can be in the newsletter..

On the other hand, If everyone thinks it is a bad idea, I will probably not do it...

Thoughts? Please post..

73 - Arnie KA0NCR
Sure works for me Arnie. See you there at the 4 SQRP table.

Jim, K8IQY


Re: MagicBox

Jim Kortge
 

On 5/10/2013 7:04 PM, Glen Hazen wrote:


I have a MagicBox that appears to function as designed but has one
problem. Am using a SDR 40 receiver and SAXVO. Am using an MfJ versa
II tuner with a 40 dipole. When I use the Magicbox for xmitting I get
very little power shown on the tuner. When I connect directly from the
SAVXO to the tuner I get 1 watt out and the output is variable with
VR1. I am suprised that I would see that much RF from the Saxvo.
Anyone have any thoughts on this MagicBox problem? Thanks Glen, N8WE
Hello Glen,

First off, I need to know if you put the auxillary Low Pass Filter on your SAVXO before using it directly on the air? There is a document that I did a while back addressing that issue. I've attached it to this email, but not sure it will make it through. If not, you are radiating numerous harmonics and running an illegal transmitter. Also, my guess is that the 1-watt power lever you are seeing is very bogus; the SAVXO barefoot only puts out about 200 milliwatts, if I remember correctly.

I don't think there is an issue with the MagicBox either. Above 30 MHz, the power output falls off rather dramatically, and in fact is down a few dB at 30 MHz, but that was the best I could do with the components available. My guess is that the MagicBox is filtering out some of the harmonics and you are not seeing their contribution to the overall power you see when that device is not in the chain.

Questions?

72,

Jim, K8IQY


Re: 4SQRP at FDIM?

WA0ITP
 

Sounds like a great idea Arnie, we could meet at the club table. It's in the
back left corner near the homebrew contest. I'l have a banner on the wall behind
the table.

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

----- Original Message -----
From: "ka0ncr" <ka0ncr@yahoo.com>
To: <4sqrp@yahoogroups.com>
Sent: Friday, May 10, 2013 11:42 PM
Subject: [4sqrp] 4SQRP at FDIM?


| Hi Group,
|
| Just was wondering if there were going to be very many from the 4SQRP group
going to the Four Days In May FDIM gathering next week?
|
| I would like to try to get a picture of the whole group, or at least several
pictures of some of the group if we can't get everyone in the
| same place at the same time. This 2nd case will probably be more likely!
|
| I will be there Thursday night for the vendor night, and can take some
pictures of our group as they show up at the table. I suppose that
| the best time to do this would be after the build-a-thon lets out?
|
| I thought that I would throw this out to the group, and see what kind of
response I get. I would like to send the pictures into the OzarkCon banner, and
everyone who shows can be in the newsletter..
|
| On the other hand, If everyone thinks it is a bad idea, I will probably not
do it...
|
| Thoughts? Please post..
|
| 73 - Arnie KA0NCR
|
|
|
| ------------------------------------
|
| 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: 4SQRP at FDIM?

w9qs@...
 


I'll be there. I think it's a great idea. Need to pick a time in Thursday night.

72

Mike, W9QS


----- Original Message -----
From: ka0ncr@...
To: 4sqrp@...
Sent:Sat May 11 04:42:13 UTC 2013
Subject: [4sqrp] 4SQRP at FDIM?


 

Hi Group,

Just was wondering if there were going to be very many from the 4SQRP group going to the Four Days In May FDIM gathering next week?

I would like to try to get a picture of the whole group, or at least several pictures of some of the group if we can't get everyone in the
same place at the same time. This 2nd case will probably be more likely!

I will be there Thursday night for the vendor night, and can take some pictures of our group as they show up at the table. I suppose that
the best time to do this would be after the build-a-thon lets out?

I thought that I would throw this out to the group, and see what kind of response I get. I would like to send the pictures into the OzarkCon banner, and everyone who shows can be in the newsletter..

On the other hand, If everyone thinks it is a bad idea, I will probably not do it...

Thoughts? Please post..

73 - Arnie KA0NCR


4SQRP at FDIM?

ka0ncr
 

Hi Group,

Just was wondering if there were going to be very many from the 4SQRP group going to the Four Days In May FDIM gathering next week?

I would like to try to get a picture of the whole group, or at least several pictures of some of the group if we can't get everyone in the
same place at the same time. This 2nd case will probably be more likely!

I will be there Thursday night for the vendor night, and can take some pictures of our group as they show up at the table. I suppose that
the best time to do this would be after the build-a-thon lets out?

I thought that I would throw this out to the group, and see what kind of response I get. I would like to send the pictures into the OzarkCon banner, and everyone who shows can be in the newsletter..

On the other hand, If everyone thinks it is a bad idea, I will probably not do it...

Thoughts? Please post..

73 - Arnie KA0NCR


MagicBox

Glen Hazen
 

I have a MagicBox that appears to function as designed but has one problem. Am using a SDR 40 receiver and SAXVO. Am using an MfJ versa II tuner with a 40 dipole. When I use the Magicbox for xmitting I get very little power shown on the tuner. When I connect directly from the SAVXO to the tuner I get 1 watt out and the output is variable with VR1. I am suprised that I would see that much RF from the Saxvo. Anyone have any thoughts on this MagicBox problem? Thanks Glen, N8WE


Minute Man key?

Paul Smith
 

I saw on the ham can site a picture of. Small silver lookin key called the minute man. Where can a guy get one? Me gotta have one!
Paul N0NBD


FS AA0ZZ EZKEYER

George H. Gates
 

Sold
 


From: W2bpi1@...
To: 4sqrp@...
Sent: 5/9/2013 8:38:50 P.M. Eastern Daylight Time
Subj: Re: [4sqrp] FS AA0ZZ EZKEYER
 
Built in altoids tin. I added on/off switch.  $25.00 shipped. Paypal OK.Contact me off list.   George/W2BPI
 


Re: Ham Can

wb2yaf
 

Tnx Todd, I found them.
73, Lee WB2YAF

--- In 4sqrp@yahoogroups.com, "Todd F. Carney / K7TFC" <k7tfc@...> wrote:

To find any Yahoo group, go to Yahoo Groups. groups.yahoo.com. At the very
top of the page you land on is a big search box labeled, "Find a Yahoo!
Group." If you can't find the group you want after carefully checking your
search terms, that means it's not on Yahoo! I belong to a few Ham groups
not on Yahoo! Of course, Google is your friend.

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design


On Fri, May 10, 2013 at 4:45 AM, Lee Benedict <wb2yaf@...> wrote:

**


Trying to find the HamCan Yahoo Users group
TNX Lee WB2YAF



Re: Ham Can

Todd K7TFC
 

To find any Yahoo group, go to Yahoo Groups. groups.yahoo.com. At the very top of the page you land on is a big search box labeled, "Find a Yahoo! Group." If you can't find the group you want after carefully checking your search terms, that means it's not on Yahoo! I belong to a few Ham groups not on Yahoo! Of course, Google is your friend.

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design


On Fri, May 10, 2013 at 4:45 AM, Lee Benedict <wb2yaf@...> wrote:
 

Trying to find the HamCan Yahoo Users group
TNX Lee WB2YAF



Re: IHAB 10 Balloon Launch

WA0ITP
 

OOPs, menat 39000 feet, it's now at 47000 feet

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

----- Original Message -----
From: "WA0ITP" <wa0itp@mchsi.com>
To: <4sqrp@yahoogroups.com>
Sent: Friday, May 10, 2013 10:01 AM
Subject: [4sqrp] IHAB 10 Balloon Launch


| The balloon was launched shortly aftger 9A and is currently at 3900 feet.
This
| launch isnt striving for extremely hi altitude. The goal is to recover it
| during the day so as to show the students how their experiments fared at
| altitude. Tracking map here
| http://aprs.fi/#!call=a%2FW0OTM-11&timerange=3600&tail=3600
| ----------------------------------
| I love this radio stuff !
| 72 WA�ITP
| www.wa0itp.com
| www.4sqrp.com
|
|
|
|
|
|
| ------------------------------------
|
| 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
|
|
|


IHAB 10 Balloon Launch

WA0ITP
 

The balloon was launched shortly aftger 9A and is currently at 3900 feet. This
launch isnt striving for extremely hi altitude. The goal is to recover it
during the day so as to show the students how their experiments fared at
altitude. Tracking map here
http://aprs.fi/#!call=a%2FW0OTM-11&timerange=3600&tail=3600
----------------------------------
I love this radio stuff !
72 WA�ITP
www.wa0itp.com
www.4sqrp.com