Digest for sci.electronics.repair@googlegroups.com - 25 updates in 10 topics

tubeguy@myshop.com: Oct 09 05:29PM -0500

Looking for tips on speaker cone repair.
 
Years ago, I used rubber cement and toilet paper on the rips. Any better
suggestions?
Fox's Mercantile <jdangus@att.net>: Oct 09 06:08PM -0500

> Looking for tips on speaker cone repair.
 
> Years ago, I used rubber cement and toilet paper on the rips. Any better
> suggestions?
 
Use a flexible glue and tea bag paper.
Do NOT use any of the silicon rubber based glues.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
gregz <zekor@comcast.net>: Oct 10 07:51AM

> Looking for tips on speaker cone repair.
 
> Years ago, I used rubber cement and toilet paper on the rips. Any better
> suggestions?
 
Use Aleen's Tacky Glue with tissue placed on rear for best look. Elmers
Shool or Glue-all will also work on center portion. Aleen's is flexible and
I think Glue-All is flexible, not School Glue.
 
Greg
tabbypurr@gmail.com: Oct 10 02:37AM -0700


> Looking for tips on speaker cone repair.
 
> Years ago, I used rubber cement and toilet paper on the rips. Any better
> suggestions?
 
ISTR using record sleeves long ago for the paper. Re glue it needs to be a bit flexible, but not too floppy like silicone.
 
 
NT
Stephen Wolstenholme <steve@easynn.com>: Oct 10 12:25PM +0100


>Looking for tips on speaker cone repair.
 
>Years ago, I used rubber cement and toilet paper on the rips. Any better
>suggestions?
 
Years ago I mended a speaker cone with soft cloth glued on with
Evostick.
 
Steve
 
--
http://www.npsnn.com
tubeguy@myshop.com: Oct 09 06:40PM -0500

Just picked up a Cobra 29 LTD WX classic radio. I really dont find much
use for CB anymore. But for a couple bucks, I liked the look of this
radio and the weather band is a big plus.
 
Over the years I have had several Cobra CBs. I swear everyone of them
has at least one bad digit on their LED readout. This one does also.
Cobra made darn good radios, but did they use bad readout boards or
what?
Fox's Mercantile <jdangus@att.net>: Oct 09 07:46PM -0500

> Cobra made darn good radios, but did they use bad readout boards or
> what?
 
A friend of mine's brother in law summed it up best.
"Pay shit, get shit."
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
gregz <zekor@comcast.net>: Oct 10 07:56AM

> has at least one bad digit on their LED readout. This one does also.
> Cobra made darn good radios, but did they use bad readout boards or
> what?
 
I have one may have been replaced, bright blue, really bright on high.
Overdriving can diminish life.
 
Greg
John Robertson <spam@flippers.com>: Oct 09 04:29PM -0700

Has anyone here used tinned copper tape for repairing PCB card edge
connections? I've used the PACE kit for many years but am running out of
the edge connector repair strips so am looking around to see what may work.
 
Looking at tinned copper tape that has conductive tape - but I doubt it
will handle much current so will have to clean that off or solder the
end of the strip to the trace.
 
Just wondering if anyone else here has run across a suitable replacement
for the PACE repair kit tinned foils...
 
Thanks,
 
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
tubeguy@myshop.com: Oct 09 05:27PM -0500

Everytime i use my laptop at a public WIFI, I see PORTTHRU as i refresh
my list of available networks. This is everywhere I am. What is it?
Fox's Mercantile <jdangus@att.net>: Oct 09 06:06PM -0500

> Everytime i use my laptop at a public WIFI, I see PORTTHRU as i refresh
> my list of available networks. This is everywhere I am. What is it?
 
The "portthru" network is an unsecured wireless network that is
automatically created by certain HP laptops, Samsung wireless
printers, and other devices. These are designed to help you set
up "ad-hoc" or direct computer to computer connections.
 
You definitely never want to connect to one of these.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Fox's Mercantile <jdangus@att.net>: Oct 09 02:28PM -0500


> Ceramic tube caps are often paper. A chinese component tester picks up most bad caps, and is supereasy to use. £12 last time I looked.
 
> NT
 
For fuck's sake, are you not even reading?
 
Context ya twat.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
"pfjw@aol.com" <peterwieck33@gmail.com>: Oct 09 12:40PM -0700

Tabby is dangerous - much as unvaccinated stray cats are dangerous. He loves pissing on the fire.
 
Peter Wieck
Melrose Park, PA
tabbypurr@gmail.com: Oct 09 01:29PM -0700


> Tabby is dangerous - much as unvaccinated stray cats are dangerous. He loves pissing on the fire.
 
> Peter Wieck
> Melrose Park, PA
 
ah the usual bullshitters.
Fox's Mercantile <jdangus@att.net>: Oct 09 05:03PM -0500


>> Peter Wieck
>> Melrose Park, PA
 
> ah the usual bullshitters.
 
Except, you continually prove it. Repeatedly.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
tabbypurr@gmail.com: Oct 09 03:56PM -0700

On Wednesday, 9 October 2019 23:03:51 UTC+1, Fox's Mercantile wrote:
> >> Melrose Park, PA
 
> > ah the usual bullshitters.
 
> Except, you continually prove it. Repeatedly.
 
Lol. Plonk for bullsht overload. Life's too short.
Fox's Mercantile <jdangus@att.net>: Oct 09 06:01PM -0500

> Lol. Plonk for bullsht overload. Life's too short.
 
Don't lie to me.
This makes the 4th or 5th time you claim to have kill
filed me.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Arlen _G_ Holder <_arlen.george@halder.edu>: Oct 09 08:16PM

On Wed, 9 Oct 2019 10:32:27 -0300, pjp wrote:
 
> All I really care about is download speed.
 
Hi pjp,
 
Thank you for your information, where it's nice to converse with someone
who has the same or similar WiFi experience as I have, which, we have to
admit, is different from the experience most people have.
 
For example, we control our modem settings to some extent, whereas, for
most people they likely can't even log in as the administrator, to check or
change a setting, or to upload firmware, or to change the frequency, or
transmit power, or whatever.
 
As for what you care about most, I agree that download speed is important,
although, for VOIP, jitter is also critical (particularly when it gets over
about 10 ms or so).
 
Our download speed is often about the same as our uploads - is yours that
way? Out here, most (but not all) the WISP advertises symmetric speeds but
often the upload can be half the download, but just as often, it's more.
 
Who knows why.
 
Out here in the mountains, a single tree can encroach into the Fresnel Zone
such that neighbors can have drastically different end results, using the
same equipment.
 
Interestingly, and sadly, just like with Windows, sometimes we have to
reboot our "modems" (yes, I know they're not modems, but most people
reading this won't know what a transceiver is, nor that it's, essentially,
a modem anyway) - just to get our speeds back.
 
Why?
o I don't know why.
 
Maybe someone here who knows more than I do can explain why my speeds jump
when I reboot the modem, where, it's kind of just like Windows, in that
way.
o Why does rebooting the modem instantly "fix" the slow speeds?
 
> I'm happy when I can download
> 1Gb in approx an hr. Typical 1/2 hr tv rip takes 20 minutes or so for
> 400Kb.
 
Thanks for your perspective, which, as I noted, most people on cable
wouldn't have the knowledge of, if this conversation weren't public.
 
Like you, I'm happy with what I can get, over the air, for my WiFi
connection to the Internet - where - I just ran a speedtest (see below),
mine are as follows at the moment (but it changes greatly over time of
course, depending on the weather, the time of day, etc.):
<https://i.postimg.cc/bNMMZ0Nv/wifi-speed.jpg>
 
That's about 24/14, which is kind of typical for me, where it can drop to
one tenth that, but rarely get more than double about that speed (which is
pretty pathetic if we compare to typical cable speeds - as the transmission
of the signal over miles takes its toll on lost & jumbled packets).
 
> I sometimes see as much as 1.3MB/Sec doing occassional torrrent
> download. Way faster than basic package even though price went up 50%,
> speed increase was tenfold so ...
 
Thank you for that perspective on torrenting, where, when I torrent, I
generally add a VPN to the mix (although truth be told, I'm almost always
on VPN anyway, as a matter of habit), where the VPN takes its toll in speed
penalties.
 
I don't torrent all that often though, where mostly I watch videos on the
Android phone (or, with emulation, on Windows, where it runs even faster
than on Android due to the memory and CPU advantages of a desktop).
 
The beauty of watching videos on Android is that, for free (I only use
freeware), we NEVER need a Google Play account (even to subscribe to video
channels on YouTube), and better yet, we never see an inserted
advertisement on YouTube, and we can download any YouTube video, bar none,
at any quality level available, and, better yet, we can strip out the video
so as to listen to the audio (which is what I do most), all offline, so
that we don't have to worry about our bandwidth coming in fits and starts
over the kilometers between our devices and our Internet connection.
 
The functionality on Android for such things literally wipes iOS off the
face of the earth, where I'll leave it at that, and with this reference:
<https://newpipe.schabi.org/>
 
Given we have slow speeds since our ISP is over the air, it would be nice
if this type of freeware existed on the common consumer desktops!
o Have you been able to get NewPipe freeware running yet on Windows?
<https://groups.google.com/d/msg/comp.mobile.android/rfyVKidB8X8/slOeDAEQAQAJ>
 
In fact, my cellphone battery was dead where I had to watch a YouTube video
on the iOS-based iPad, where it was appalling that iOs users have to see
ads in YouTube (even though I use "Music Tube" and "Video Tube", which are
'supposed' to suppress the Google ads, which, they do - but they insert
their own, which accomplishes nothing useful overall).
<https://apps.apple.com/us/app/video-tube-stream-play-watch/id566564331>
<https://apps.apple.com/us/app/mytube-stream-and-play/id964383263>
 
As noted, the beauty of Android functionality kills that of iOS, even on
the desktop, where the Android apps run _better_ on the desktop than they
do on Android itself (due to the hardware, of course). (The Mac can't hope
to catch up, as the recent admission by Apple yesterday that Netflix iOS
app will never be on the Mac shows strategically, for the most popular
apps.)
 
My point is that video speeds ARE a problem for me, as they are for you,
where we just have to be clever about intelligently choosing free apps
which easily download the videos (or strip the audio) without any added
bandwidth of advertisements.
 
> Almost all my house is hard wired using one router and three switches.
 
Thank you for that additional information about routers and switches,
where, if I snapped a photo of my setup, you'd likely be appalled at the
number of routers and switches entangled in the rats nest.
 
Basically, when I replace a router, I set up the old router as either a
wired repeater or as a wireless repeater, where, interestingly, again, the
stellar difference between iOS and Android shows up in spades, when you
watch them switch between what are the same access point SSIDs, but
obviously quite different BSSIDs.
 
As you are likely aware, one of the greatest things about having to figure
out how to get our Internet and cellular in a rural area, is that we learn
how to diagnose and debug signal strength, noise levels, and bandwidth
issues.
 
The utilities available on Android, for example, kill those available on
the desktops, unfortunately ... such as what I have on my Android phone
that I wish were all ported to the desktops (although some are):
<https://i.postimg.cc/BZrZpDyp/debug-apps.jpg>
 
Even with free Android emulation on the desktops, the cellphone is better.
o Genymotion tutorial I wrote to help others do what I did on a desktop
<https://groups.google.com/d/msg/comp.mobile.android/ix9empN-mxg/07ZmH2AWAQAJ>
 
o Bluestacks tutorial I wrote to help others do what I did on a desktop
<https://groups.google.com/d/msg/comp.mobile.android/JBRjZ39w4Ok/6Vzu7rtIAQAJ>
 
o Andyroid tutorial I wrote to help others do what I did on a desktop
<https://groups.google.com/d/msg/comp.mobile.android/FkZu5vAswYo/wISRtpUUAQAJ>
etc.
 
It's just sad that this functionality is almost always either non existent,
or far less powerful, or not free, etc., on the Apple platform... sigh.
o It's a fact iOS devices can't even graph Wi-Fi signal strength over time
<https://groups.google.com/d/msg/comp.mobile.android/IK0TZ3LxGgQ/kwhrUnzoBAAJ>
 
> Wi-Fi seldom used but works thruout house as some of my pcs have built
> in wireless and not just the laptops. Only pc depends on wireless is
> older Netbook wife uses to display sheet music on piano.
 
Thank you for that information that you use older desktops, as do I, where
most of mine don't have WiFi built in, but where I just plug a spare
antenna into the Ethernet RJ45 port, and voila - they can pick up signal at
-55 decibels (which is pretty good signal) that is literally coming from 10
kilometers (about 6 miles) away, over the air, line of sight.
 
Like you, I don't want to depend on wireless (or the cloud); so what I do
for all my devices (iOS, Android, Windows, and Linux anyway), is use them
as USB sticks, which is easy to do for all but iOS but which is also easy
to do on iOS if you know how (which takes a bit of thinking first - but
once you know the trick - any iOS device is turned into a free USB stick in
seconds over USB cable).
 
Luckily, most of us own all the platforms, so we can switch between them as
we see fit, where a dual boot Linux and Windows, for example, allows us to
use the iOS device as a USB stick, to simultaneously transfer large video
files to and from any device to and from any other device, over USB.
o Simultaneously slide Windows Linux iOS Android files back and forth over USB at 7GB per minute speeds using 100% native devices (no proprietary software needed)
<https://groups.google.com/d/msg/alt.os.linux/WqIDiVbawRs/pwxzu7LMCAAJ>
 
Note that almost nobody knows how to do that simple task from the desktop,
for iOS devices, because it requires knowledge of a trick to WRITE to the
entire visible file system of the iOS device - which isn't in the least
intuitive - but which works great once you know that trick (where even the
ad hoc system files on the iOS device are visible to the desktop user that
knows the simple tricks).
 
In summary, because we have such slow Internet connections, we have to keep
"stuff" off the Internet, where we learn how to be self sufficient
connecting to WiFi access points which are miles away over line of sight,
and working around the need for wifi by using wires inside the house
whenever possible (e.g., USB works great for large video file transfers and
for backups of entire mobile devices to and from networked storage devices,
all without adding anything to the desktop or mobile device by way of
special software).
 
You just have to know the tricks, such as some of these:
o Do you have a working cross-platform PASSWD database for Windows, Linux, Mac, iOS, & Android on your home LAN?
<https://groups.google.com/d/msg/alt.os.linux/YEfw5NblnRs/kvn3DUiAEAAJ>
 
o Can we come up with a free, ad free, cloud-free calendaring system that works with Windows and Linux and mobile devices?
<https://groups.google.com/d/msg/alt.os.linux/ydQ9sG-8Y08/pBRXk7UEEgAJ>
 
In summary, if you know the technical tricks, people like us, on very slow
Internet connections, find that there's almost never a need to use the
"cloud" to store our private data (e.g., calendar, photos, backups,
passwords, etc.) and we find tricks for viewing movies without ads and we
find ways to watch movies for free offline without the inevitable hiccups
of fits and starts that would happen over our slow connections were we to
attempt streaming over the air.
 
Thanks for all your information where it's nice to know what others do when
they are forced to figure out ways to make use of Wi-Fi access points miles
away from their desktops.
Arlen _G_ Holder <_arlen.george@halder.edu>: Oct 09 10:50PM

On Wed, 9 Oct 2019 17:59:09 -0400, Ken Hart wrote:
 
> USB port, but I didn't see any that plug into an RJ-45. There were also
> devices to convert ethernet to USB (or vice versa), so I suppose it
> could be done with two pieces of gear.
 
Hi Ken Hart,
 
You bring up very good points, as did some of the others who aren't aware
of the fact that one end of the setup is a "normal" Ethernet Cat6 RJ45
typical connection which plugs into anything that normally takes the RJ45
connector (e.g., a desktop, a laptop, a router, another radio, etc.).
 
Regarding terminology, as Dan Purgert noted, when we say 'antenna', we
generally mean the entire apparatus, which includes a radio, otherwise
known as a "transceiver", which, for those who don't know, equates roughly
to the "modem" for you cable cognizant folks (as it effectively does the
same thing from the standpoint of what's on each end):
<http://img4.imagetitan.com/img.php?image=18_wifi.jpg>
 
It's typical in the WISP arena to just say "antenna" or "radio" instead of
"transceiver", where it's simply assumed the reader understands the basics.
 
As Dan Purgert said, one end of the 'device', is a female RJ45, which, of
course, plugs into anything you want to plug it into.
 
The other end of the 'device' is the "antenna", which connects to another
"antenna" which, in the case of pjp, is a kilometer away, and which, in my
case, is about 10 kilometers away, where that's only the start of the
distances we can cover and still get decent signal strength.
 
Here's an example of me explaining to Rod Speed, for example, how he can
connect his neighbor's house to his house, using a "similar" setup:
o For Rod Speed: Example of Wi-Fi connection between two homes 5.4 km apart (3.4 miles)
<https://groups.google.com/d/msg/misc.phone.mobile.iphone/NJw9ncPPkUA/mMHmRm5sCQAJ>
 
I helped Rod Speed by advising him on a variety of ways he can connect two
widely separate homes to the same Internet connection (line of sight).
o Rod Speed: How is your neighbor's WiFi from your house going?
<https://groups.google.com/d/msg/misc.phone.mobile.iphone/FcthxOalXr0/Pr7TdtQHCgAJ>
 
I'm always learning how to do things - which - a lot of people - don't do.
 
For just one example, out here, in the mountains surrounding the Silicon
Valley, we're mostly self sufficient, where, we even repair, mount and
balance our own car tires ... so setting this stuff up just comes naturally
to us (we're American, after all - which means we fix stuff).
 
But when you "fix stuff", you have to "learn stuff".
o In fact, you have to "learn stuff" that many people never learn.
 
For example, on car tires, as just one of many examples,
o Just mounted & static balanced my 30th tire in about five years
<https://groups.google.com/d/msg/alt.home.repair/zfyOpil5bck/4axuVoT6BwAJ>
o Clare - are smaller car tires easier to balance than SUV tires?
<https://groups.google.com/d/msg/alt.home.repair/So4om4fLtmI/6JMGVoT1BQAJ>
o Two simple questions that came up when mounting tires at home
<https://groups.google.com/d/msg/alt.home.repair/uYN-T90pKUw/oTAGMHKGAAAJ>
o Clare, Xeno.... did you ever have a batch of tires that just wouldn't seal after the final bead?
<https://groups.google.com/d/msg/alt.home.repair/ST-xNgC5pnU/agDaRH_JAgAJ>
etc.
 
In the case of obtaining your Internet service from ten kilometers away, we
have to learn how to set up the radios to talk to each other, and then, the
part about talking to the desktop is trivial - since it's a "normal"
Ethernet connection between the radio and the desktop.
 
You just plug one end of the "antenna" into the RJ45 port of the desktop.
 
As for "terminology", we generally just use the simplifications of...
Radio:
<https://www.amazon.com/Ubiquiti-ROCKETM5-Power-airMAX-BaseStation/dp/B00HXT8P9O>
Antenna:
<https://www.amazon.com/Ubiquiti-RocketDish-RD-5G34-Antenna-RD-5G-34/dp/B00HXT8OMM>
 
Where the "official" brand names,.on Amazon anyway, are the following:
o Ubiquiti ROCKETM5 5GHz Hi Power 2x2 MIMO TDMA airMAX BaseStation
o Ubiquiti RocketDish RD-5G34 Antenna (RD-5G-34)
 
But where, colloquially, we just call that the radio & antenna, and, more
commonly, just the "antenna" since that forms the bulk of the apparatus.
KenW <ken1943@invalid.net>: Oct 09 11:12AM -0600

>> turned on ?? <<<
 
>They start at 5V/0.5A and need negotiation to get a higher output
>voltage or -current.
 
OK it shows no voltage, the reason for my question
KenW <ken1943@invalid.net>: Oct 09 03:31PM -0600


>Maybe it is defective?
>I think a USB-C charger can be used on older devices with just a
>passive adapter, so it should be compatible with that.
 
Not trying to charge anything. It is an open circuit so I was
expecting to see 5v there like any other usb.
fynnashba@gmail.com: Oct 09 02:08PM -0700

> > thank you.
 
> if it's rated to run continuously at 90% or greater load, yes. Otherwise no.
 
> NT
 
Thanks to you all. you ve all given me a great deal of knowledge.
Rob <nomail@example.com>: Oct 09 09:07PM


>>They start at 5V/0.5A and need negotiation to get a higher output
>>voltage or -current.
 
> OK it shows no voltage, the reason for my question
 
Maybe it is defective?
I think a USB-C charger can be used on older devices with just a
passive adapter, so it should be compatible with that.
John Robertson <spam@flippers.com>: Oct 09 10:51AM -0700


> Mark Oppat calls himself, with justification, the King of Kontrols.
 
> Peter Wieck
> Melrose Park, PA
 
We bought out a huge supply of Centralab Adashaft (build-a-pot) as well
as the IRC line of build-your-own-pots from an old radio/TV distributor.
 
Hope to list all the parts in the next few months, suffice it to say we
have hundreds of sections and shafts and switches....
 
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
tabbypurr@gmail.com: Oct 09 12:29PM -0700

On Wednesday, 9 October 2019 18:51:38 UTC+1, John Robertson wrote:
 
> Hope to list all the parts in the next few months, suffice it to say we
> have hundreds of sections and shafts and switches....
 
> John :-#)#
 
Nice one. Thank you both, will pass tis on.
 
 
NT
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