In article ,
says...

analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out
but the radio still has enough gain to get some reception. "


Wouldn't it take EMP or outright dropping the
radio on the floor to cause that sort of damage?
Or just years of gentle, normal usage?

Static common in the winter has been known to blow the input transistor
on a lot of radios. They put diodes across the inputs to protect them,
but they cause problems in some cases with reception, so many times,
they are clipped out of the radio. I've found out they were gone the
hard way, a couple of times.

--
BDK: Head Government Shill, Psychotronic World Dominator. Master of
Remote Viewing. Level 6 expert in kOOkStudies.
Former FEMA camp activities director. Head Strategic Writer. Former
Black Helicopter color consultant.

On Tue, 21 Jun 2016, wrote:

analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out
but the radio still has enough gain to get some reception. "


Wouldn't it take EMP or outright dropping the
radio on the floor to cause that sort of damage?
Or just years of gentle, normal usage?

Yes and no.

MOSFETs are very sensitive to static electricity, their very high input
impedance (especially with no circuit built around them) does nothing to
put a load on the static electricity, so they can be punched out.

JFETs should be less vulnerable, but in more recent times I've seen talk
of JFETs being vulnerable as if they are MOSFETs.

That said, I was using a Delco car radio as a bedside radio, and at some
point it lost sensitivity on the AM band, initially I just thought it was
bad radio conditions. But eventually I changed the JFET and it was back
to "normal" sensitivity", so it actually can be a problem. I have no
recollection of anything that might have done the deed, this was a few
feet of wire inside so it wouldn't have been lightning.

Michael

On Tuesday, June 21, 2016 at 11:53:40 AM UTC-5, Michael Black wrote:
On Tue, 21 Jun 2016, wrote:

analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out
but the radio still has enough gain to get some reception. "


Wouldn't it take EMP or outright dropping the
radio on the floor to cause that sort of damage?
Or just years of gentle, normal usage?

Yes and no.

MOSFETs are very sensitive to static electricity, their very high input
impedance (especially with no circuit built around them) does nothing to
put a load on the static electricity, so they can be punched out.

JFETs should be less vulnerable, but in more recent times I've seen talk
of JFETs being vulnerable as if they are MOSFETs.

That said, I was using a Delco car radio as a bedside radio, and at some
point it lost sensitivity on the AM band, initially I just thought it was
bad radio conditions. But eventually I changed the JFET and it was back
to "normal" sensitivity", so it actually can be a problem. I have no
recollection of anything that might have done the deed, this was a few
feet of wire inside so it wouldn't have been lightning.

Michael

www.jimstone.is EMP ...jimstone.is, 82.221.129.208

Joe from Kokomo wrote:
"This type of damage occurs on a fairly regular basis -- without anything
as drastic as an EMP. Just walking across a carpet on a dry winter's day
in a home with a low humidity level can create enough static electricity
to damage some radios...no matter how gentle you are. ;-) "

So should I just buy a new radio, so I can be assured
I have the latest and best circuitry? The G6 Buzz
Aldrin Ed is about 7-8 years old, but everything
except for the start timer(supposed to turn set on at
user-set time) works on it. AM & FM recept is flawless,
and I get lots of shortwave loud n clear between 2.5 and
30mHz, and occasionally those time signals.


Sony seems to top all the Amazon reviews for compact
units, by external and internal customers. What ever
happened to Sangean?

On Tuesday, June 21, 2016 at 12:39:01 PM UTC-5, wrote:
Joe from Kokomo wrote:
"This type of damage occurs on a fairly regular basis -- without anything
as drastic as an EMP. Just walking across a carpet on a dry winter's day
in a home with a low humidity level can create enough static electricity
to damage some radios...no matter how gentle you are. ;-) "

So should I just buy a new radio, so I can be assured
I have the latest and best circuitry? The G6 Buzz
Aldrin Ed is about 7-8 years old, but everything
except for the start timer(supposed to turn set on at
user-set time) works on it. AM & FM recept is flawless,
and I get lots of shortwave loud n clear between 2.5 and
30mHz, and occasionally those time signals.


Sony seems to top all the Amazon reviews for compact
units, by external and internal customers. What ever
happened to Sangean?

No such thing as having too many radios. Go buy that radio.

Joe from Kokomo wrote:
"This type of damage occurs on a fairly regular basis -- without anything
as drastic as an EMP. Just walking across a carpet on a dry winter's day
in a home with a low humidity level can create enough static electricity
to damage some radios...no matter how gentle you are. ;-) "

On 6/21/2016 1:39 PM, wrote:

So should I just buy a new radio, so I can be assured
I have the latest and best circuitry? The G6 Buzz
Aldrin Ed is about 7-8 years old, but everything
except for the start timer(supposed to turn set on at
user-set time) works on it. AM & FM recept is flawless,
and I get lots of shortwave loud n clear between 2.5 and
30mHz, and occasionally those time signals.

So why buy a new radio? Sounds like yours is working just fine.

Sony seems to top all the Amazon reviews for compact
units, by external and internal customers. What ever
happened to Sangean?

No clue what happened to Sangean. Also, price is no indication if you
will have a static problem. The Sony 2010 was a top drawer radio but it
had a MOSFET front end and was thus subject to static damage.

On 6/21/2016 12:54 PM, Michael Black wrote:

That said, I was using a Delco car radio as a bedside radio, and at some
point it lost sensitivity on the AM band, initially I just thought it
was bad radio conditions. But eventually I changed the JFET and it was
back to "normal" sensitivity", so it actually can be a problem. I have
no recollection of anything that might have done the deed, this was a
few feet of wire inside so it wouldn't have been lightning.

Unless you live in a Faraday cage, lightning can still be a problem. At
one time I had a 15 foot indoor antenna. I put an NE-2 neon bulb --
which fires at about 60 volts -- across it and ground and when a
thunderstorm got within 2 or 3 miles, the neon bulb would flash, so in
your case there was a slight possibility it could have been lightning,
but more likely shuffling across the rug or wearing polyester clothes
static issue.

On Tuesday, June 21, 2016 at 6:15:10 PM UTC-5, Joe from Kokomo wrote:
On 6/21/2016 12:54 PM, Michael Black wrote:

That said, I was using a Delco car radio as a bedside radio, and at some
point it lost sensitivity on the AM band, initially I just thought it
was bad radio conditions. But eventually I changed the JFET and it was
back to "normal" sensitivity", so it actually can be a problem. I have
no recollection of anything that might have done the deed, this was a
few feet of wire inside so it wouldn't have been lightning.

Unless you live in a Faraday cage, lightning can still be a problem. At
one time I had a 15 foot indoor antenna. I put an NE-2 neon bulb --
which fires at about 60 volts -- across it and ground and when a
thunderstorm got within 2 or 3 miles, the neon bulb would flash, so in
your case there was a slight possibility it could have been lightning,
but more likely shuffling across the rug or wearing polyester clothes
static issue.

www.ham-radio.com/k6sti (Sangean) ...orrr, What happened to Sangean?

On Tuesday, June 21, 2016 at 7:25:51 AM UTC-4, None wrote:
thekma @gmail.com wrote in message
...
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz


Thirty years ago, that ticking atomic clock could be picked
up on any shortwave receiver, whether one paid $40 or
$400 for it, or even on the boom-boxes of that day, of
which the majority featured at least SW1 & SW2. Starting
in the 1990s, it became increasingly more difficult to tune
them in, even with a dedicated shortwave radio. They'd
come in on only certain of those frequencies, or only at
certain times of day.

Now, they are all but inaudible except for once in a while,
every other day, on one frequency or another. All I hear at
those frequencies is loud static or noise.

What's going on??

What's going on is, you're a trolling dumb ****.

This was all explained to you when you trolled a different group with
this same nonsense.

You showed that you don't even know what station you're trying to
listen to, let alone what frequency it's on. You've confirmed that
again, here. The simplest explanation is that you just don't know how
to find the station on your radio. Too stupid! This was explained to
you on the other newsgroup, but it probably could not penetrate your
granite skullbone.

You cited the Wikipedia article, too. But that's about a different
station, which broadcasts on 60 Hz. This was explained to you, too.
And the article does not say that the station reduced it's power about
a decade ago. You'd know that if you could apply a bit of reading
comprehension, but that's obviously not possible. And, of course, this
was spelled out in the other group. None of this ever gets through to
you, does it?

As for the ridiculous claim that most boomboxes and radios from thirty
years ago received SW, well, it's no surprise that you're an utter
dumb**** on that subject too. So now what? Find yet another newsgroup,
for you to pinch off more turds of trolldom?

It is for clocks' synchronization. It is 60 KHz.

wrote:



What do evangelists have to do with my problems
picking up WWV/H/B time syncs??


puhleeez...

Have you tried tuning in CHU?