Pro-53 Crystals

[RedPenguin]

Does anyone know where and what type of crystals this scanner would take? I tried Google but can't seem to find which type these takes.

EDIT: NVM, I called one guy and he may have it but he is not sure.

 

[SCPD]

probably would tell you in manual? perhaps

 

[RedPenguin]

I looked in the manual.....

probably would tell you in manual? perhaps

I have looked in the manual over and over but can't seem to find the same terms on the sites that sell crystals.

The manual states:

Standard HC-25/U, 3rd overtone

I don't see anything that says that on any crystal site.

 

[digitalanalog]

Realistic and or Radio Shack scanners take 10.7 crystals.

Uniden crystal scanners use 10.8

Does anyone know where and what type of crystals this scanner would take? I tried Google but can't seem to find which type these takes.

 

[SCPD]

Realistic and or Radio Shack scanners take 10.7 crystals.

Uniden crystal scanners use 10.8

thanks, I was trying 2 remember thT but brain wouldn't work

 

[RedPenguin]

Alright......

Alright, even though I on my Pro-53 I got two channels working fine, I probably can't use frequencies in my area that are only 12.5kHz apart, correct?

I'm guessing a scanner this old would not be in to narrowbanding, so I guess I would just have channel bleed-overs correct?

 

[Evert]

........ I'm guessing a scanner this old would not be in to narrowbanding,

Apparently they thought it was into narrow banding when they made it. Shows how the meaning of terms and phrases change over time.

 

[DickH]

Does anyone know where and what type of crystals this scanner would take? I tried Google but can't seem to find which type these takes.

EDIT: NVM, I called one guy and he may have it but he is not sure.

Exploring and expanding the capabilities of quartz crystals
Tell them the EXACT freq. you want to hear, your scanner model, the I.F. freq. (10.7) and the crystal style (HC25/U).

Also Internationaql Crystals in Oklahoma City.

 

[fineshot1]

Another good crystal source

Bomar Crystal Company | Clock Oscillators, TCXO, VCXO, OCXO, Crystals

EDIT: Oh and yes you can order crystals for narrow band freqs but the receiver selectivity specs will determine how well
the adjacent channel splatter & noise comes through.

 

[gmclam]

EDIT: Oh and yes you can order crystals for narrow band freqs but the receiver selectivity specs will determine how well the adjacent channel splatter & noise comes through.

And the audio will sound weaker on channels transmitting in "narrow band".

 

[RedPenguin]

Well, I think what I will do is....

I will have to look around for the crystals, but so far at least my local PD never changed frequency, so it still receives them fine.

If anything, I will just use it to listen/record (during special events) my local PD and maybe sometimes my county fire.

Anyway, did it really matter where these scanners were placed? I mean in what area?

I'm listening to 453.650 and 453.225 and I noticed that if it's on my desk near the LCD monitor, it has static, yet if it's near the printer on the other side, it's almost as good of audio as my BCT15/BR330T, obviously not quite though.

Just sucks that apparently only two channels work but luckily I only have two current crystals for my area besides NOAA.

 

[RedPenguin]

Why 6 channels dead?

I was wondering, why 6 channels would die on something like this.

Is it probably just due to age or is it something that can cheaply be fixed?

The scanner actually has nice audio so it kinda sucks to only ever be able to use 2 channels, basically worthless if those ever die.

 

[w8jjr]

Realistic and or Radio Shack scanners take 10.7 crystals.

Uniden crystal scanners use 10.8

You can use either if the freq is not available in the right one.

155.010 mhz crystal can receive 155.115 well 155.110 (close enough) in a 10.8 scanner

155.010 + 0.1 = 155.110

same with 10.8

155.115 mhz crystal would receive 155.015 in 10.7 scanner

155.115 - 0.1 = 155.015 or 155.010

 

[RedPenguin]

An apology

I do want to make an apology to some of the people posted answers to my question here and possibly some others.

I did take the advice of every single reply and did contact who I could contact, but for whatever reason, everyone ended up not having the needed crystal(s).

I thank everyone for the posts in this thread and various other threads.

I always wish to thank for replies, never honestly realized I forgot.

This post is to try and correct some of the pissing off that I ended up doing to people, for various reasons apparently. I never meant to start any fires, I mean, it used to be said, we're all in this hobby together.

 

[scansalot52]

It could be all the xtals have died. On the other hand, if its been sitting around this long with the same ones in it, try removing them and gently cleaning the pins and sockets. An eraser might work on the pins and contact cleaner on the sockets. You also might want to try contact cleaner on the individual channel on/off switches. Using the good xtals, move them to other sockets, that might tell you if the xtals are dead or if its somthing else. The bulbs or led should light regardless of whether the xtals are good. The frequencies on the "dead" ones still in use by area departments? Just a thought, your milage may vary. If you've already eliminated these possibilities, then I don't know either.

 

[batrastard]

Wirelessly posted (BlackBerry8310/4.5.0.124 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/179 UP.Link/6.3.1.20.0)

Check ebay and see if someone is selling that specific type of crystal.

 

[gmclam]

I was wondering, why 6 channels would die on something like this.

Is it probably just due to age or is it something that can cheaply be fixed?

The scanner actually has nice audio so it kinda sucks to only ever be able to use 2 channels, basically worthless if those ever die.

I am still running some crystal controlled scanners (in addition to newer models) but I have the equipment and ability to maintain them. I'd say the biggest issue I run in to is some crystals simply oscillating at the wrong frequency after age (some of my crystals are 30+ years old).

The idea of 6 channels/crystals going bad at the same time is possible, but less probable than a single failure. If you have ANY channels/crystals which have not changed (still work) then it indeed sounds like you do have 6 "bad" crystals. But if these 6 represent everything in your scanner, it sounds more like a different failure. There are lots of things which could fail and keep all frequencies from functioning.