Difference between revisions of "Scanner Crystals"
From The RadioReference Wiki
m (Started Page) |
m (moved eBay widget to separate page) |
||
(5 intermediate revisions by 2 users not shown) | |||
Line 1: | Line 1: | ||
− | ==Crystal Formulas== | + | ==Bearcat Crystal Formulas== |
− | |||
− | |||
− | Radio Shack & Regency | + | ===Bearcat Low-band=== |
− | + | *Third Overtone | |
+ | *Receive frequency + 10.8 MHz = crystal frequency | ||
+ | *HC25/u holder | ||
+ | |||
+ | ===Bearcat High-band=== | ||
+ | *Third Overtone | ||
+ | *Receive frequency - 10.8 MHz / 3 = crystal frequency | ||
+ | *HC25/u holder | ||
+ | |||
+ | ===Bearcat UHF-band=== | ||
+ | *Third Overtone | ||
+ | *Channel frequency - 10.8 MHz / 9 = crystal frequency | ||
+ | *HC25/u holder | ||
+ | |||
+ | ==Regency/Radio Shack (Realistic) Crystal Formulas== | ||
+ | |||
+ | ===Regency & Radio Shack (10.7 MHz IF) Low Band=== | ||
+ | *Third overtone | ||
+ | *Receive frequency + 10.7 MHz = crystal frequency | ||
+ | *Series resonance - 450Hz | ||
+ | *HC25/u holder | ||
+ | |||
+ | ===Regency & Radio Shack (10.7 MHz IF) High Band=== | ||
+ | *Third overtone | ||
+ | *Receive frequency - 10.7 MHz / 3 = crystal frequency | ||
+ | *Series resonance - 450Hz | ||
+ | *HC25/u holder | ||
+ | |||
+ | ===Regency UHF-band=== | ||
+ | *Third Overtone | ||
+ | *Receive frequency - 10.7 MHz / 9 = crystal frequency | ||
+ | *Load capacitance 18pf | ||
+ | *HC25/u holder | ||
+ | |||
+ | ===Radio Shack (Realistic) UHF=== | ||
+ | *Triple conversion | ||
+ | *Receive frequency - 44 MHz / 9 = crystal frequency | ||
==Crystal Markings== | ==Crystal Markings== | ||
Line 13: | Line 47: | ||
* [http://www.kenselectronics.com/lists/scantype.html Ken's Electronics Crystal Reference Page] | * [http://www.kenselectronics.com/lists/scantype.html Ken's Electronics Crystal Reference Page] | ||
− | == | + | ==Scanner Crystals for Sale== |
− | + | *[[Scanner Crystals eBay Listings]] | |
+ | |||
+ | |||
+ | |||
− | [[Category: | + | [[Category:Scanner accessories]] |
+ | [[Category:Scanners FAQ]] | ||
+ | [[Category:Scanners Glossary]] | ||
+ | [[Category:Conventional Scanners]] | ||
+ | [[Category:Uniden Scanners]] | ||
+ | [[Category:Radio Shack Scanners]] |
Latest revision as of 04:58, 6 February 2016
Contents
Bearcat Crystal Formulas
Bearcat Low-band
- Third Overtone
- Receive frequency + 10.8 MHz = crystal frequency
- HC25/u holder
Bearcat High-band
- Third Overtone
- Receive frequency - 10.8 MHz / 3 = crystal frequency
- HC25/u holder
Bearcat UHF-band
- Third Overtone
- Channel frequency - 10.8 MHz / 9 = crystal frequency
- HC25/u holder
Regency/Radio Shack (Realistic) Crystal Formulas
Regency & Radio Shack (10.7 MHz IF) Low Band
- Third overtone
- Receive frequency + 10.7 MHz = crystal frequency
- Series resonance - 450Hz
- HC25/u holder
Regency & Radio Shack (10.7 MHz IF) High Band
- Third overtone
- Receive frequency - 10.7 MHz / 3 = crystal frequency
- Series resonance - 450Hz
- HC25/u holder
Regency UHF-band
- Third Overtone
- Receive frequency - 10.7 MHz / 9 = crystal frequency
- Load capacitance 18pf
- HC25/u holder
Radio Shack (Realistic) UHF
- Triple conversion
- Receive frequency - 44 MHz / 9 = crystal frequency
Crystal Markings
77 means it was made for a Radio Shack Pro-77 and uses a 10.7 IF.