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Lisa Simpson September 21st 06 01:49 AM

DX-120
 
Ala Cuhulin, I picked up a Realistic DX-120 at a yard sale today for $5.00.
Anyone got any experience with these, or can point me at some related links?



Beloved Leader September 21st 06 03:05 AM

DX-120
 

Lisa Simpson wrote:
Ala Cuhulin, I picked up a Realistic DX-120 at a yard sale today for $5.00.
Anyone got any experience with these, or can point me at some related links?


You've been cleaning up lately at those things. First that scanner and
now this. Only if you were lucky was yours as clean as this one:

http://www.signalharbor.com/dx120.html

Those are old. How does it work?


Lisa Simpson September 21st 06 11:29 AM

DX-120
 
Not quite that clean. The only testing I've done so far it so plug it in to
make sure it lights up; I'll hook up a speaker & antenna to it this weekend
& give it a run. Probably end up selling it on ebay, as I can't stand
receivers with bandpass tuning!

"Beloved Leader" wrote in message
ups.com...

Lisa Simpson wrote:
Ala Cuhulin, I picked up a Realistic DX-120 at a yard sale today for

$5.00.
Anyone got any experience with these, or can point me at some related

links?

You've been cleaning up lately at those things. First that scanner and
now this. Only if you were lucky was yours as clean as this one:

http://www.signalharbor.com/dx120.html

Those are old. How does it work?




John S. September 21st 06 02:01 PM

DX-120
 

Lisa Simpson wrote:
Ala Cuhulin, I picked up a Realistic DX-120 at a yard sale today for $5.00.
Anyone got any experience with these, or can point me at some related links?


Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?


Lisa Simpson September 21st 06 02:20 PM

DX-120
 
Actually, it was a DX-160, and yes, I wound up selling it to Universal Radio
because I can't stand bandpass tuning, so I plan on selling this too after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...

Lisa Simpson wrote:
Ala Cuhulin, I picked up a Realistic DX-120 at a yard sale today for

$5.00.
Anyone got any experience with these, or can point me at some related

links?

Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?




Lisa Simpson September 21st 06 08:39 PM

DX-120
 
IMHO it's illogical.

"Beloved Leader" wrote in message
ups.com...

Lisa Simpson wrote:
I can't stand
receivers with bandpass tuning!


Why is that?




John S. September 21st 06 09:34 PM

DX-120
 

Beloved Leader wrote:
Lisa Simpson wrote:
I can't stand
receivers with bandpass tuning!


Why is that?


The argument won't go anywhere I'm afraid........


Dick Chisel September 21st 06 09:50 PM

DX-120
 
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal Radio
because I can't stand bandpass tuning, so I plan on selling this too after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...



Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?


Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.

Mike September 21st 06 11:28 PM

DX-120
 
"Dick Chisel" wrote in message
m...
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal
Radio
because I can't stand bandpass tuning, so I plan on selling this too
after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...



Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?


Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.



Neither of which are illogical or frustrating! So I'm really curious to
hear Lisa Simpson's explanation.

Mike


Michael Black September 22nd 06 03:46 AM

DX-120
 
Dick Chisel ) writes:
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal Radio
because I can't stand bandpass tuning, so I plan on selling this too after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...



Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?


Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.


Of course, very few receivers of 30 years ago and before had bandpass
tuning either.

Michael


[email protected] September 22nd 06 03:50 AM

DX-120
 
On Thu, 21 Sep 2006 18:28:38 -0400, "Mike" wrote:

"Dick Chisel" wrote in message
om...
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal
Radio
because I can't stand bandpass tuning, so I plan on selling this too
after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...



Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?


Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.



Neither of which are illogical or frustrating! So I'm really curious to
hear Lisa Simpson's explanation.

Mike


I can't speak for Lisa Simpson however I suspect that Lisa got into
radio by first using a radio that has PLL/digital tuning and it has to
do with being able to easily discern what frequency you are tuned to.
Anyone remember making cheat sheets what it says on the dial vs what
the frequency is, letting a receiver warm up then using a cyrstal
calibrator to get the initial set point for the bandspread??

Michael Black September 22nd 06 05:15 AM

DX-120
 
) writes:
On Thu, 21 Sep 2006 18:28:38 -0400, "Mike" wrote:

"Dick Chisel" wrote in message
. com...
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal
Radio
because I can't stand bandpass tuning, so I plan on selling this too
after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...


Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated because
it used bandspread tuning?

Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.



Neither of which are illogical or frustrating! So I'm really curious to
hear Lisa Simpson's explanation.

Mike


I can't speak for Lisa Simpson however I suspect that Lisa got into
radio by first using a radio that has PLL/digital tuning and it has to
do with being able to easily discern what frequency you are tuned to.
Anyone remember making cheat sheets what it says on the dial vs what
the frequency is, letting a receiver warm up then using a cyrstal
calibrator to get the initial set point for the bandspread??


But on that level of receiver, it wasn't just a matter of "well the station
is closer to the 5 than the 4.5" but the 5 wasn't even where it should
have been.

My first receiver, a Hallicrafter's S-120A (the "A" is significant
because it was transistorized), I bought in July of 1971 and I spent all
my accumulated allowance and birthday money on it. It was such a low
end receiver that it didn't even have a place for a crystal calibrator.

They were horrible receivers back then, and they still are, yet I think
there is something special about them compared to the fancy receivers
everyone has nowadays.

Mihael


Brian Hill September 22nd 06 01:45 PM

DX-120
 

wrote in message

Anyone remember making cheat sheets what it says on the dial vs what
the frequency is, letting a receiver warm up then using a cyrstal
calibrator to get the initial set point for the bandspread??


I still use receivers like that.


--

Regards
B.H.
Southern, MN USA
Radios- R-5000, NRD525,SP-600,SX-28,Eton E1

Brian's Radio Universe
http://webpages.charter.net/brianhill/500.htm

Brian's Basement
http://webpages.charter.net/brianhill/6.htm

Remove your HAT to reply directly




Lisa Simpson September 22nd 06 03:15 PM

DX-120
 
Yup, quite true. Not against older receivers, like my DX-302, but
bandSPREAD (yes, I incorrectly said bandPASS earlier, I spologize to those
of you that can't seem to get past that) is just stupid.

wrote in message
...
On Thu, 21 Sep 2006 18:28:38 -0400, "Mike" wrote:

"Dick Chisel" wrote in message
om...
Lisa Simpson wrote:
Actually, it was a DX-160, and yes, I wound up selling it to Universal
Radio
because I can't stand bandpass tuning, so I plan on selling this too
after I
check it to make sure it actually receives . . .

"John S." wrote in message
ups.com...


Maybe I'm confusing you with someone else, but didn't you pick up a
DX150 not too long ago? Use it for a day and become frustrated

because
it used bandspread tuning?

Lisa Simpson wrote "bandpass" tuning.

John S. wrote "bandspread" tuning.

Two very different things.



Neither of which are illogical or frustrating! So I'm really curious

to
hear Lisa Simpson's explanation.

Mike


I can't speak for Lisa Simpson however I suspect that Lisa got into
radio by first using a radio that has PLL/digital tuning and it has to
do with being able to easily discern what frequency you are tuned to.
Anyone remember making cheat sheets what it says on the dial vs what
the frequency is, letting a receiver warm up then using a cyrstal
calibrator to get the initial set point for the bandspread??




Brian Hill September 22nd 06 03:46 PM

DX-120
 

"Lisa Simpson" wrote in message
...
Yup, quite true. Not against older receivers, like my DX-302, but
bandSPREAD (yes, I incorrectly said bandPASS earlier, I spologize to those
of you that can't seem to get past that) is just stupid.


Yes they can take some getting used to.

BH



Mike September 23rd 06 12:54 AM

DX-120
 
"Lisa Simpson" wrote in message
...
Yup, quite true. Not against older receivers, like my DX-302, but
bandSPREAD (yes, I incorrectly said bandPASS earlier, I spologize to those
of you that can't seem to get past that) is just stupid.


You have obviously never used a radio with a proper bandspread.

My Hallicrafters S-120 does it the wrong way - a separate Bandspread tuner
and knob that you use after tuning the main knob roughly where you want it.

My Grundig Satellit 2100 does it right. With the flip of a switch, it
breaks out the standard shortwave meter bands - 25, 31, 41 etc . - and
actually s p r e a d s them out, taking them from about 1 inch on the
tuning dial to almost 6 inches each. The calibration is spot on, and it
becomes easier than tuning in local FM stations. Where you had 5 stations
in a quarter turn of the tuning knob, you now have 1 station in a half turn.
Selectivity is incredible, and fading is largely eliminated - even without a
sync - because you can get exactly centered on the signal so easily.

Mike


Telamon September 23rd 06 01:01 AM

DX-120
 
In article , "Mike"
wrote:

"Lisa Simpson" wrote in message
...
Yup, quite true. Not against older receivers, like my DX-302, but
bandSPREAD (yes, I incorrectly said bandPASS earlier, I spologize to those
of you that can't seem to get past that) is just stupid.


You have obviously never used a radio with a proper bandspread.

My Hallicrafters S-120 does it the wrong way - a separate Bandspread tuner
and knob that you use after tuning the main knob roughly where you want it.

My Grundig Satellit 2100 does it right. With the flip of a switch, it
breaks out the standard shortwave meter bands - 25, 31, 41 etc . - and
actually s p r e a d s them out, taking them from about 1 inch on the
tuning dial to almost 6 inches each. The calibration is spot on, and it
becomes easier than tuning in local FM stations. Where you had 5 stations
in a quarter turn of the tuning knob, you now have 1 station in a half turn.
Selectivity is incredible, and fading is largely eliminated - even without a
sync - because you can get exactly centered on the signal so easily.


That makes no sense unless you are also using a BFO in some mode like
side band.

I continue to be amazed by peoples lack of appreciation for sync
detection.

--
Telamon
Ventura, California

Lisa Simpson September 23rd 06 01:18 AM

DX-120
 
You are undoubtedly correct! The way it's done on these Realistics is just
asinine IMHO. Perhaps I need to experience a 2100. Do all the Satelit's
have that feature?

"Mike" wrote in message
...
"Lisa Simpson" wrote in message
...
Yup, quite true. Not against older receivers, like my DX-302, but
bandSPREAD (yes, I incorrectly said bandPASS earlier, I spologize to

those
of you that can't seem to get past that) is just stupid.


You have obviously never used a radio with a proper bandspread.

My Hallicrafters S-120 does it the wrong way - a separate Bandspread tuner
and knob that you use after tuning the main knob roughly where you want

it.

My Grundig Satellit 2100 does it right. With the flip of a switch, it
breaks out the standard shortwave meter bands - 25, 31, 41 etc . - and
actually s p r e a d s them out, taking them from about 1 inch on

the
tuning dial to almost 6 inches each. The calibration is spot on, and it
becomes easier than tuning in local FM stations. Where you had 5

stations
in a quarter turn of the tuning knob, you now have 1 station in a half

turn.
Selectivity is incredible, and fading is largely eliminated - even without

a
sync - because you can get exactly centered on the signal so easily.

Mike




Mike September 23rd 06 02:40 AM

DX-120
 
"Lisa Simpson" wrote in message
...
You are undoubtedly correct! The way it's done on these Realistics is
just
asinine IMHO. Perhaps I need to experience a 2100. Do all the Satelit's
have that feature?


Just the old analog models. 1000, 2000, 2100, 3000 and 3400.

Mike


Mike September 23rd 06 02:44 AM

DX-120
 
"Telamon" wrote in message
...
That makes no sense unless you are also using a BFO in some mode like
side band.


No, it makes perfect sense. Have you used such a radio? BTW, the 2100 has
no BFO anyways.

I continue to be amazed by peoples lack of appreciation for sync
detection.


I appreciate sync detection just fine, having 2 radios that use it - a Drake
R8 and a Satellit 800. The 800's sync is much better than the R8's because
the 800 has selectable sideband. The R8 is double only. Note I'm talking
about an original R8, NOT an R8B!

Mike


Lisa Simpson September 23rd 06 03:39 AM

DX-120
 
It makes perfect sense to have to guess at, or calculate, the frequency
you're tuned to, when it would have been just as easy to actually display
the actual frequency you're listening to?

"Mike" wrote in message
...
"Telamon" wrote in message

...
That makes no sense unless you are also using a BFO in some mode like
side band.


No, it makes perfect sense. Have you used such a radio? BTW, the 2100

has
no BFO anyways.

I continue to be amazed by peoples lack of appreciation for sync
detection.


I appreciate sync detection just fine, having 2 radios that use it - a

Drake
R8 and a Satellit 800. The 800's sync is much better than the R8's

because
the 800 has selectable sideband. The R8 is double only. Note I'm

talking
about an original R8, NOT an R8B!

Mike




Michael Black September 23rd 06 04:31 AM

DX-120
 
"Lisa Simpson" ) writes:
It makes perfect sense to have to guess at, or calculate, the frequency
you're tuned to, when it would have been just as easy to actually display
the actual frequency you're listening to?

Assuming you are talking about radios without digital displays, I should
point out that they weren't left off old radios for some vague reason.

They were left off because digital displays would require a huge chassis
for all the tubes to make the digital display, and of course that would
drive up the cost so it would be beyond the means of most people.

You could go with a mechanical digital dial, but you then either have
the National HRO (complete with plug-in coils for each band) which
was expensive, but still didn't give linear readout. It cost too
much, and was too complicated, to make each band linear, so the
fine numbers on the dial were just really good logging scales (and
reasonably decent readout).

There were expensive receivers like the R390 that had mechanical
digital dials. They fixed the problem by having the dial cover a fixed
and small range (500KHz), and then adding a converter ahead of it
to get all the bands. It was much easier to get linear tuning,
so the digital dial reflected the frequency accurately, with such
a scheme. But it cost money to pay people to get the tuning linear,
and thus no hobbyist could afford those receivers until they were
available in surplus.

Note that the same scheme did provide pretty good dials without
the mechanical digital readout. But again, it was far easier to
calibrate the dial every 1KHz (and be accurate) when the tuning
only covered a small range and didn't change when the band changed.

In the old days, dial accuracy and precision went up the more you
spent on a receiver.

What's misleading is that solid state electronics have made digital
dials easy and cheap and small, so much so that it's now easier
to use them than trying to do an analog dial. But just because
a receiver has a digital readout now doesn't actually mean it's a good
receiver. They are just as bad as the low end receivers of decades
ago, albeit with a better dial.

A good receiver can be expensive.

Michael

Mike September 23rd 06 04:46 AM

DX-120
 
"Lisa Simpson" wrote in message
...
It makes perfect sense to have to guess at, or calculate, the frequency
you're tuned to, when it would have been just as easy to actually display
the actual frequency you're listening to?


There is no guessing at all. The dial looks like this:

9 . . . . 9.5 . . . . 10

etc., and it's perfectly calibrated.

Yes, digital is better, but this is one the best analog tuning radios ever
made. I *much* prefer tuning an analog radio to a digital one. Way less
noise, and just a better "feel".

Look, I have lots of radios he E. H. Scott Allwave 23, a Drake R8,
Grundig Satellits 650, 700, 800, 2100, Grundig YB400, Grundig S350, Tecsun
BCL 2000, Kaito/Degen 1102s, Panasonic RF-2200, etc. etc. Digital radios
are great for identifying a signal's exact frequency, but nothing beats an
analog radio for just tuning around to see what's on!

Mike


Frank Dresser September 23rd 06 02:58 PM

DX-120
 

"Lisa Simpson" wrote in message
...
It makes perfect sense to have to guess at, or calculate, the frequency
you're tuned to, when it would have been just as easy to actually display
the actual frequency you're listening to?


"would have been just as easy"? You're either trolling or clueless.

Frank Dresser



Lisa Simpson September 23rd 06 07:22 PM

DX-120
 
Whatever. I finally got around to testing it; hooked it up to my
Eavesdropper antenna, and it seems to receive well; am listening to "AM920"
right now, Frank Sinatra music! One of the regulars on the "realisticdx"
Yahoo newsgroup has offered $20 + shipping, so looks like he's the proud new
owner!

"Frank Dresser" wrote in message
...

"Lisa Simpson" wrote in message
...
It makes perfect sense to have to guess at, or calculate, the frequency
you're tuned to, when it would have been just as easy to actually

display
the actual frequency you're listening to?


"would have been just as easy"? You're either trolling or clueless.

Frank Dresser





Telamon September 24th 06 04:31 AM

DX-120
 
In article , "Mike"
wrote:

"Telamon" wrote in message
...
That makes no sense unless you are also using a BFO in some mode like
side band.


No, it makes perfect sense. Have you used such a radio? BTW, the 2100 has
no BFO anyways.

I continue to be amazed by peoples lack of appreciation for sync
detection.


I appreciate sync detection just fine, having 2 radios that use it - a Drake
R8 and a Satellit 800. The 800's sync is much better than the R8's because
the 800 has selectable sideband. The R8 is double only. Note I'm talking
about an original R8, NOT an R8B!


Nice radios. Drake's are the best.

You wrote:
Selectivity is incredible, and fading is largely eliminated - even
without a sync - because you can get exactly centered on the signal
so easily.


Please explain how precisely tuning in a station improves reception
during selective fading. This makes no sense to me.

--
Telamon
Ventura, California

Mike September 24th 06 06:01 AM

DX-120
 
"Telamon" wrote in message
...
Nice radios. Drake's are the best.


Well, an R8B would be the best. My R8 is not the best radio I have.

Please explain how precisely tuning in a station improves reception
during selective fading. This makes no sense to me.


I can't explain it. All I know is that the 2100 using the bandspread
sometimes gives me a better signal than the 800 using the sync. They are
both using their internal whip antennas, and are side by side on the table.
The 2100 performs *much* better than the 800 without using the 800's sync.
Selective fading is much less drastic. Turning on the sync on the 800
*usually* makes it perform better than the 2100, but not *always*.

Mike


Telamon September 24th 06 11:57 PM

DX-120
 
In article , "Mike"
wrote:

"Telamon" wrote in
message

.com...
Nice radios. Drake's are the best.


Well, an R8B would be the best. My R8 is not the best radio I have.

Please explain how precisely tuning in a station improves reception
during selective fading. This makes no sense to me.


I can't explain it. All I know is that the 2100 using the
bandspread sometimes gives me a better signal than the 800 using the
sync. They are both using their internal whip antennas, and are
side by side on the table. The 2100 performs *much* better than the
800 without using the 800's sync. Selective fading is much less
drastic. Turning on the sync on the 800 *usually* makes it perform
better than the 2100, but not *always*.


You are comparing two radios with different circuitry and
specifications. What you are seeing (hearing) is most likely a
difference in radio performance. Speculating for a moment I could guess
that the 2100 might have greater dynamic range or maybe a faster AGC
that can follow the a rapid fade over the SAT 800 but there is no way I
can understand the statement that precise tuning can equal using sync
detection. Using a standard AM detector and tuning a station spot on
compared to being slightly off tuned is not going to make an
improvement in a fading signal that using a sync detector is going to
make.

Generally, I have found that precise tuning allows a sync detector to
maintain lock on a weak signal.

--
Telamon
Ventura, California


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