Date   
Re: 40M Net

w2sh@...
 

Heard Terry at 569 just as he was announcing the net's closure.  Dropped my call sign but guess he either didn't hear me or or had already pulled the big switch. 

Will try next week.

72,

Charles (aka Chas), W2SH


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of WA0ITP <wa0itp@...>
Sent: Thursday, June 27, 2019 9:47
To: 4sqrpio
Subject: [4SQRP] 40M Net
 
Good net last night, checking in were:

N0XM
AC0BQ
KD0WF
W8IIE
KK5IB

Thanks and hope to cu agn next week.

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

Re: 40M Net

WA0ITP
 

Sri I missed you Chas.  I thought I heard someone at the end, but too much QRN here at that point for a QSO.  Hope to work you next week.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 6/27/2019 10:40 PM, w2sh@... wrote:

Heard Terry at 569 just as he was announcing the net's closure.  Dropped my call sign but guess he either didn't hear me or or had already pulled the big switch. 

Will try next week.

72,

Charles (aka Chas), W2SH


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of WA0ITP <wa0itp@...>
Sent: Thursday, June 27, 2019 9:47
To: 4sqrpio
Subject: [4SQRP] 40M Net
 
Good net last night, checking in were:

N0XM
AC0BQ
KD0WF
W8IIE
KK5IB

Thanks and hope to cu agn next week.

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

locked MODERATOR NOTE: Australian Parliament: An inquiry into truth in political advertising #ADMIN

Tim McDonough N9PUZ
 

This topic is inappropriate for the 4SQRP list. Take the politics elsewhere folks.

Don't thank me. Don't curse me. Don't suggest how we might run the list. Just move on to QRP topics please.

Tim N9PUZ
4SQRP List Co-Moderator

August Banner

Keith Arns
 

I will be putting together the August issue of the Banner in just a couple of weeks.  If you have something to contribute please pass it along.  Especially looking for reports on Field Day.  If you operated whether alone or with a group let us know how it went.  A paragraph or two and maybe a photo would be nice.
Any other news, project you have been working on or antennas are welcome also.  Please send to editorqrpbanner@...

73,
Keith Arns
KC0PP
Editor - The Banner
4States QRP

Re: Thoughts on the NM0S Hi Pass Filter

Mike Malone
 

Hi, can I republish this in the QRP Quarterly with pertinent info on how my fellow hamsters can get this kit?

Mike KD5KXF

On Sat, Apr 27, 2019 at 2:03 PM WA0ITP <wa0itp@...> wrote:
NM0S has provided a very nice Hi Pass Filter Kit,
http://www.4sqrp.com/4S-HPF.php, for 4SQRP to include in it's stable of
kits. It is the same form factor as his earlier low pass filter, and
there are no toroids to wind. Spiral coils on the pcb provide the needed
inductance. IMHO this nice little filter hasn't received the attention
that it deserves.

Why a Hi Pass?
Anyone using  a direct conversion receiver probably need one to prevent
overload from local AM broadcast stations, unless that rcvr has a built
in HPF.

My QTH is abt two miles from two kilowatt BCB stations, 1240kc and 1480
kc, and they have been a problem for every direct conversion receiver
I've ever built - homebrew or commercial. Several years ago I added a
very simple HPF to a project and it helped but didnt do the job
completely.  So I added caps in series with the shunt inductors, to trap
the BCB signals and that worked fb.

While my version is ok, Dave's rendition is superior (to be expected),
and the kit's pcbs make it extremely easy to build and it looks great in
it's case.  If you have an offending BCB station or two, make them
disappear by changing C4 and C5 so as to make two series resonant
traps.  There is a nice calculator here http://www.pronine.ca/lcf.htm

Attached are schematics and performance graphs for your review, all are
screenshots from Tonnesoft's very excellent filter design program LC. 
Thanks you Jim for a fantastic program and your willingness to share a
free version.

Observe the awesome attenuation Dave's design has right off the bat. 1M
attenuation is -96db!!!  My measly effort only attenuates 1Mc 36 dB..

If you need to use a high pass filter, the NM0S/4SQRP will do the job,
and can't be beat for simplicity and effectiveness.
http://www.4sqrp.com/4S-HPF.php  I just bought one !

This Saturday musing is brought to you buy the weather, is raining and
cold here.  Questions and comments are welcome.

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




Re: Thoughts on the NM0S Hi Pass Filter

Johnny Matlock
 

Good afternoon Mike
Why don’t you drop a email directly to Dave Cripe.

I think he would hold the copy right to the kit and the info.

His email is:

72
Johnny AC0BQ 

On Sat, Jun 29, 2019 at 1:16 PM Mike Malone <kd5kxf@...> wrote:
Hi, can I republish this in the QRP Quarterly with pertinent info on how my fellow hamsters can get this kit?

Mike KD5KXF

On Sat, Apr 27, 2019 at 2:03 PM WA0ITP <wa0itp@...> wrote:
NM0S has provided a very nice Hi Pass Filter Kit,
http://www.4sqrp.com/4S-HPF.php, for 4SQRP to include in it's stable of
kits. It is the same form factor as his earlier low pass filter, and
there are no toroids to wind. Spiral coils on the pcb provide the needed
inductance. IMHO this nice little filter hasn't received the attention
that it deserves.

Why a Hi Pass?
Anyone using  a direct conversion receiver probably need one to prevent
overload from local AM broadcast stations, unless that rcvr has a built
in HPF.

My QTH is abt two miles from two kilowatt BCB stations, 1240kc and 1480
kc, and they have been a problem for every direct conversion receiver
I've ever built - homebrew or commercial. Several years ago I added a
very simple HPF to a project and it helped but didnt do the job
completely.  So I added caps in series with the shunt inductors, to trap
the BCB signals and that worked fb.

While my version is ok, Dave's rendition is superior (to be expected),
and the kit's pcbs make it extremely easy to build and it looks great in
it's case.  If you have an offending BCB station or two, make them
disappear by changing C4 and C5 so as to make two series resonant
traps.  There is a nice calculator here http://www.pronine.ca/lcf.htm

Attached are schematics and performance graphs for your review, all are
screenshots from Tonnesoft's very excellent filter design program LC. 
Thanks you Jim for a fantastic program and your willingness to share a
free version.

Observe the awesome attenuation Dave's design has right off the bat. 1M
attenuation is -96db!!!  My measly effort only attenuates 1Mc 36 dB..

If you need to use a high pass filter, the NM0S/4SQRP will do the job,
and can't be beat for simplicity and effectiveness.
http://www.4sqrp.com/4S-HPF.php  I just bought one !

This Saturday musing is brought to you buy the weather, is raining and
cold here.  Questions and comments are welcome.

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




--
Check out the 4SQRP website at 4sqrp.com

Electronic visual aids for working with SMD (i.e. microscopes)

wa2cky
 

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

Re: Electronic visual aids for working with SMD (i.e. microscopes)

John KK4ITX
 

Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

locked Re: Australian Parliament: An inquiry into truth in political advertising

W6BOW
 

Jim,

Well put and most apt.

I live in SF out here on the so called "Left Coast" and have opinions which might very well chafe yours and/or others back in 4SQRP country.

However ...

There is a time and a place for everything. 

In my humble opinion  Ham Radio is not a forum for political repartee.

This is - or should be - the beauty of our endeavors.

Respectfully,

Don Buckter - W6BOW
San Francisco  CA  USA




-----Original Message-----
From: Dr Jim Kennedy via Groups.Io <phdad_ccm@...>
To: main <main@4SQRP.groups.io>
Sent: Fri, Jun 28, 2019 1:47 pm
Subject: Re: [4SQRP] Australian Parliament: An inquiry into truth in political advertising

I totally understand your frustration with government. I is shared by many in mamy, many countries. However, ham radio is my escape from the trials and tribulations of everyday life. As such I would also hope to escape into the world of QRP operations, propogation and equipment free from all other issues and causes. Sorry, but think the post was inappropriate for this group. Sorry.
--
*72/73, Doc - K2PHD
FN20qv - SKCC#5669 - NAQCC#9194 - FISTS#18988*

locked Re: Australian Parliament: An inquiry into truth in political advertising

marjannorm
 

Sorry folks, but I got hacked and never knew until I opened my computer. I would never knowingly screw up like this - just, please don't open anything with this header.
Besides, truth in political advertising is an oxymoron anyway!
Again, apologies.
Norm vk5gi
McLaren Vale
South Australia

Re: Electronic visual aids for working with SMD (i.e. microscopes)

J.K. Wright
 

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00=yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

Re: Electronic visual aids for working with SMD (i.e. microscopes)

Paul Goemans
 

We used a stereo “dissecting” microscope with above and below stage lighting in the electronics repair shop I worked in. I liked it!

de WA9PWP



Sent from Paul’s iPhone 

On Jun 30, 2019, at 6:44 AM, J.K. Wright <wrightjk@...> wrote:

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00=yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

Re: Electronic visual aids for working with SMD (i.e. microscopes)

Johnny Matlock
 

Gm guys 
I tried one the imported electronic USB
Magnifiers and didn’t care for it.
The focal length was really close, and I had trouble adjusting it on a Linux computer.
I couldn’t find any Linux drivers, so that may have been a issue?

I went back to my magnified work light and a magnified head set, lots better!!
That’s my 2 cents worth.
72
Johnny AC0BQ 


On Sun, Jun 30, 2019 at 7:36 AM Paul Goemans <wa9pwp@...> wrote:
We used a stereo “dissecting” microscope with above and below stage lighting in the electronics repair shop I worked in. I liked it!

de WA9PWP



Sent from Paul’s iPhone 

On Jun 30, 2019, at 6:44 AM, J.K. Wright <wrightjk@...> wrote:

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00=yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

--
Check out the 4SQRP website at 4sqrp.com

Cryptographic signatures

 

I just got a bounce that the other topic was locked. I'd like to
recommend the use of cryptographic signatures as a means to be
reasonably assured of the sender's legitimacy.

The recent thread is all the more reason to use tools such as
cryptographic signatures where possible, IMO. Unfortunately, some
amateur radio mailing lists block signed messages and I must send
messages to those lists in the clear (all of the Linux related lists I
subscribe to accept signed messages). Now, a cryptographic signature
does not prevent someone from spoofing my email address, but if it's a
direct mail from me and it's not signed like this one is, then the
recipient can be assured that it wasn't from me.

The spoofing of email addresses is a problem but it doesn't necessarily
mean that an account was cracked. However, when using a cryptographic
signature, the spoof is easily identified as the spoofer should not have
access to the private key used to sign the email nor should he know the
password to unlock the private key for signing. An email client program
will check the signed message against the public key which is often
available from a public key server and verify the signature.

72, Nate

--

"The optimist proclaims that we live in the best of all
possible worlds. The pessimist fears this is true."

Web: https://www.n0nb.us GPG key: D55A8819 GitHub: N0NB

Re: Electronic visual aids for working with SMD (i.e. microscopes)

Dave Benson
 

I got one of the headset magnifiers with lenses for both eyes,  It ran about $20 with an assortment of snap-in lenses. I used the strongest lenses- a working distance of 4-5 inches,,, and depth perception to boot.  They worked very well....  until I dropped the assembly and the retaining hardware vanished.  The lens is now secured with transparent tape in classic 'nerd' fashion.

73- Dave, K1SWL


On Sun, Jun 30, 2019 at 11:08 AM Johnny Matlock <jomatlock@...> wrote:
Gm guys 
I tried one the imported electronic USB
Magnifiers and didn’t care for it.
The focal length was really close, and I had trouble adjusting it on a Linux computer.
I couldn’t find any Linux drivers, so that may have been a issue?

I went back to my magnified work light and a magnified head set, lots better!!
That’s my 2 cents worth.
72
Johnny AC0BQ 


On Sun, Jun 30, 2019 at 7:36 AM Paul Goemans <wa9pwp@...> wrote:
We used a stereo “dissecting” microscope with above and below stage lighting in the electronics repair shop I worked in. I liked it!

de WA9PWP



Sent from Paul’s iPhone 

On Jun 30, 2019, at 6:44 AM, J.K. Wright <wrightjk@...> wrote:

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00=yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

--
Check out the 4SQRP website at 4sqrp.com

Re: Cryptographic signatures

 

Looking at the parent message my email client, neomutt, reports a bad
signature. Apparently, this is not unique to this list but I get the
same result from other groups.io lists as well. Sigh...

72, Nate

--

"The optimist proclaims that we live in the best of all
possible worlds. The pessimist fears this is true."

Web: https://www.n0nb.us GPG key: D55A8819 GitHub: N0NB

Re: Electronic visual aids for working with SMD (i.e. microscopes)

Leland Lannoye
 

Sounds all too familiar



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Dave Benson <davek1swl@...>
Date: 6/30/19 11:44 (GMT-05:00)
To: main@4sqrp.groups.io
Subject: Re: [4SQRP] Electronic visual aids for working with SMD (i.e. microscopes)

I got one of the headset magnifiers with lenses for both eyes,  It ran about $20 with an assortment of snap-in lenses. I used the strongest lenses- a working distance of 4-5 inches,,, and depth perception to boot.  They worked very well....  until I dropped the assembly and the retaining hardware vanished.  The lens is now secured with transparent tape in classic 'nerd' fashion.

73- Dave, K1SWL

On Sun, Jun 30, 2019 at 11:08 AM Johnny Matlock <jomatlock@...> wrote:
Gm guys 
I tried one the imported electronic USB
Magnifiers and didn’t care for it.
The focal length was really close, and I had trouble adjusting it on a Linux computer.
I couldn’t find any Linux drivers, so that may have been a issue?

I went back to my magnified work light and a magnified head set, lots better!!
That’s my 2 cents worth.
72
Johnny AC0BQ 


On Sun, Jun 30, 2019 at 7:36 AM Paul Goemans <wa9pwp@...> wrote:
We used a stereo “dissecting” microscope with above and below stage lighting in the electronics repair shop I worked in. I liked it!

de WA9PWP



Sent from Paul’s iPhone 

On Jun 30, 2019, at 6:44 AM, J.K. Wright <wrightjk@...> wrote:

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00=yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky <bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

--
Check out the 4SQRP website at 4sqrp.com

Re: Cryptographic signatures

WA4EFS
 

Just so everyone knows, if a messages starts with “Dearest, …” it’s not from me!

 

J Lloyd (WA4EFS)

 

Re: Cryptographic signatures

AD0QM
 

The problem with mailing lists is the contents gets mangled while being sent out by the mailing list software. If the list has different max widths than you when signing you can get bad results. Signing really only works when the thing you sign is an attachment. It's been the biggest complaint about PGP style email signatures next to how to build your web of trust.

When I use PGP for sending emails I only get consistent results by sending a message saying "Please see attachment for contents of message" and never using PGP for mailing lists.

Jeff

PS I'm sure the signature on this response will come up bad too.


On June 30, 2019 10:47:34 AM CDT, Nate Bargmann <n0nb@...> wrote:
Looking at the parent message my email client, neomutt, reports a bad
signature. Apparently, this is not unique to this list but I get the
same result from other groups.io lists as well. Sigh...

72, Nate

Re: Electronic visual aids for working with SMD (i.e. microscopes)

Charlie Vest
 

My sight has now deteriorated where even the headband lighted magnifier doesn't help with SMD and I can't read regular transistor numbers or clearly see my through hole soldering . Luckily I have a grandson living with me and a great nephew that is going to be a senior in high school this year that loves electronics and they teach it at the high school he goes to. It is rare for me not to have a part on hand when they want to do a build and they love to use all of the fancy test equipment on my bench . They have become my eyes for reading part numbers and I am still not ready to give up building after only 57 years of doing it !!

Since I can't see my solder joints when I solder them now I have found that the USB Camera / Microscope does a really good job of looking at the finished joint as well as looking for bridges when I look at it on a big monitor . I like it because I can get a really close look at a small area .

Charlie , W5COV 

On June 30, 2019 at 11:44 AM Dave Benson <davek1swl@...> wrote:

I got one of the headset magnifiers with lenses for both eyes,  It ran about $20 with an assortment of snap-in lenses. I used the strongest lenses- a working distance of 4-5 inches,,, and depth perception to boot.  They worked very well....  until I dropped the assembly and the retaining hardware vanished.  The lens is now secured with transparent tape in classic 'nerd' fashion.

73- Dave, K1SWL

On Sun, Jun 30, 2019 at 11:08 AM Johnny Matlock < jomatlock@...> wrote:
Gm guys 
I tried one the imported electronic USB
Magnifiers and didn’t care for it.
The focal length was really close, and I had trouble adjusting it on a Linux computer.
I couldn’t find any Linux drivers, so that may have been a issue?

I went back to my magnified work light and a magnified head set, lots better!!
That’s my 2 cents worth.
72
Johnny AC0BQ 


On Sun, Jun 30, 2019 at 7:36 AM Paul Goemans < wa9pwp@...> wrote:
We used a stereo “dissecting” microscope with above and below stage lighting in the electronics repair shop I worked in. I liked it!

de WA9PWP



Sent from Paul’s iPhone 

On Jun 30, 2019, at 6:44 AM, J.K. Wright < wrightjk@...> wrote:

The problem with low end $ usb microscopes is depth of field focusing. It is very narrow. Also depending on lenses, the lens tip may be very close to the work surface.
Magnified head gear may well be better, but if you want something else look at 3x-10x stereo scopes on a stand. They are comparatively pricey, but show up on craigslist and hamfests every so often.
Jerry, NK2C

On Sat, Jun 29, 2019, 6:12 PM jleahy00 via Groups.Io <jleahy00= yahoo.com@groups.io> wrote:
Hi Bob,


And found it to be outstanding for $10.95.  This unit has a built in light that is adjustable so you don’t miss anything.  I have used it to assemble the Cricket 30, 40 and currently working on the audio filter.  I can’t believe the difference, now I need something to steady my hands !

None of my work has been SMD but this should work for you.

John
KK4ITX 


If you need a parachute and don't have one you probably won't need one again.

On Jun 29, 2019, at 18:46, wa2cky < bob.groh@...> wrote:

With a constant shift to building with SMD components (and with my 'aging' eyes), I have been looking at getting one of those USB electronic microscopes for working on SMD boards. Anyone else done any work on this topic and have any recommendations, thoughts, etc to pass on?

Bob Groh, WA2CKY

 

 

 

 

--
Check out the 4SQRP website at 4sqrp.com