Difference between revisions of "Scanner Crystals"
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| − | ==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== | ||
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* [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 23:58, 5 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.