RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

Transmitter/receiver crystals


Old 01-26-2007, 12:55 PM
Junior Member
Thread Starter
Join Date: Jan 2007
Location: Sanford, NC
Posts: 1
My Gallery
My Models
My Feedback
Default Transmitter/receiver crystals

Why are some crystals labeled AM and some FM? Aren't AM &FM methods of modulation and unaffected by crystals? Also, is the old pulse modulation a seperate form of modulation, or does it fall under AM or FM? I'm confused but trying to learn. Thanks
whippledorf is offline  
Reply With Quote
Old 01-26-2007, 05:31 PM
My Feedback: (11)
BarracudaHockey's Avatar
Join Date: Jul 2003
Location: Jacksonville, FL
Posts: 23,386
My Gallery
My Models
My Feedback
Default RE: Transmitter/receiver crystals

AM and FM use different crystals. PCM and PPM both use FM so they both use FM crystals. Then on the reciever side you need to make sure you get a single conversion or dual conversion crystal depending on the receiver type.

Here's some reading for you: http://www.torreypinesgulls.org/radios.htm
BarracudaHockey is online now  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service