Why use crystal controlled scanners?
Dr Pepper
I have a computer controlled pro-2006, and a pro-2030, as well
as several hand held and mobile scanners. I ALSO have 3 or 4
old Regency crystal controlled scanners. WHY would anyone
want something as archaic as a non-programmable, crystal controlled
scanner? I live in a small town where the cop-shop uses only one
or two frequencies. Each of these old scanners have only one or two
frequencies in them, but are *on* 24 hours per day in various rooms!
If I hear some action, I go to my office and tune in to the rest of
the frequencies. The main reason I can keep several of them going
all the time is that they are *cheap* ! donjajusloveit?
Dr Pepper
10 - 2 - 4
Andy Domonkos
The best image rejection and selectivity you can get in a dual conversion
receiver. That and there were no PLL synth electronics available
commercialy back then 'don't ya' know?'
ANdy
Lenny Dickson
ch> I have a computer controlled pro-2006, and a pro-2030, as well
Hi, I also have a 2030 and have been looking for any mods. Mine does
not have the L201
jumper installed so I don't know how to open up the 800mhz hole. I do
have the trick
trick to monitor 66-80mhz if you need it. Let me Know if you know of
any mods and
and I'll send any back I find. I enjoy scanning and would like to push
this one to
limits before upgrading. (Translation = I paid 150 for this a year ago
and would like
to its utmost before the next one. <g> LenD
... Exercise your right to arm and keep bears!
--
Dan Pobgee
> I have a computer controlled pro-2006, and a pro-2030, as well
I also have a couple of crystal scanners that I use as dedicated monitors.
I have found that some of them are MORE sensitive than their computer-
controlled brothers, and have less problems with interference and intermod.
This is not to say that there are a lot of old crystal scanners that are
not worth
their scrap value. (but there are some computer scammers that are trash too!)
--
"640k ought to be enough for anybody."
-Bill Gates
(1981)
Mark L9
Crystal scanners have ALWAYS been more sensitive than the synthesized
radios and at the same time have hardly had any intermod problem AT ALL.
If crystals were still readily available (I mean EASILY readily available)
I never would have gotten rid of my old Regency! I had a Bearcat Four-Six
that was a GREAT radio until I, uh, ran over it with my car. Don't
ASK!!!!!!!!!!!
Yeah, the programmables are certainly more flexible, but they definitely
don't HEAR better than the old crystal radios.
K. Sollmann
Hi all,
I have dug out my old Regency ACT-R-106 10 channel crystal scanner and
have decided to put it back in dedicated service for listening to the
local railroads around here.
I need to find some new crystals- I am specifically looking for:
160.950 160.245 160.830 160.275 161.520
161.370 161.190 160.920 160.290 160.560
- and possibly -
161.550 160.410 160.470 160.695 161.085
160.545
If you have others in the railroad band I might consider buying them.
It has been several years since I bought crystals. I used to buy
in-person from American Crystal in Kansas City Kansas. If they are still
in business I would appreciate knowing of the address. Other crystal
sources would be appreciated.
Does anyone know the IF of this scanner?
Tennessee frequency tip of the week-
State Narcotics Task Force helicopter operations used for coordination
between helicopters and ground forces looking for marijuana fields:
154.770 VHF FM simplex
73's, Karl jax...@usit.net
Len Anderson
ML>From: mar...@aol.com (Mark L9)
ML>Subject: Re: Why use crystal controlled scanners?
ML>Crystal scanners have ALWAYS been more sensitive than the synthesized
ML>radios and at the same time have hardly had any intermod problem AT ALL.
Untrue as a general statement. 'Sensitivity' is a function of the
amplifiers' gain in a superheterodyne. 'Intermodulation' is a
function of the linearity of front-end stages, including the first
mixer.
A frequency-synthesized receiver, scanner or not, does NOT influence
either sensitivity or intermodulation, it simply substitutes a
controlled-multi-frequency local oscillator for a large number of
crystals in the same circuit. If the "synthesized radio" LO is
working properly, it IS crystal-controlled.
~~
ML>Yeah, the programmables are certainly more flexible, but they definitely
ML>don't HEAR better than the old crystal radios.
I had a Philmore "crystal radio" (kit) as a kid, wouldn't pick up
anything but the local AM BC station. :)
---
* OLX 2.1 * But I forgot all about the Amnesia Conference!!
Dr Pepper
"K. Sollmann" <jax...@usit.net> wrote:
>Hi all,
>73's, Karl jax...@usit.net
AHHAAAAAAAA! another rock bound affecienado. . . .
Try this website for your rocks...
http://www.iinc.com:80/ggcomm/
G&G Communications has a VERY large selection of crystals. :-}
Jerry Stack
K. Sollmann wrote:
>
> Hi all,
>
> I have dug out my old Regency ACT-R-106 10 channel crystal scanner and
> have decided to put it back in dedicated service for listening to the
> local railroads around here.
>
> I need to find some new crystals- I am specifically looking for:
>
> 160.950 160.245 160.830 160.275 161.520
> 161.370 161.190 160.920 160.290 160.560
> - and possibly -
> 161.550 160.410 160.470 160.695 161.085
> 160.545
>
> If you have others in the railroad band I might consider buying them.
I have 160.380, 160.920 and 161.100
>
> It has been several years since I bought crystals. I used to buy
> in-person from American Crystal in Kansas City Kansas. If they are still
> in business I would appreciate knowing of the address. Other crystal
> sources would be appreciated.
>
> Does anyone know the IF of this scanner?
I don't know the frequency, but you probably can still get crystals through your local
Radio Shack. I just did a couple months ago. Cheap ($5) and fast service. The store
should have a catalog which lists the scanners and their IF along with frequencies
available.
>
> I also have 39.42, 39.88, 42.66, 42.88, 45.74, 45.82, 45.98, 153.755, 154.31, 453.400,
460.375.
How about $3/each if you want them. These work with 10.7 mhz IF.