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Skunkweed
Junior Member
Username: Skunkweed

Post Number: 22
Registered: 1-2004
Posted on Thursday, July 05, 2007 - 6:54 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I got a question.
What kind of 10.695 crystals use in channelguard? Overtone, other? I need to specify that in order.
Where to connect it inside?
Radio is almost the same like HR2510, HR2600. Tell me where to connect CH G.
What about FM? Isn't it to narrow, or it is just enough bandwidth to use FM. Should I baypass channelguard in FM mode?
Thanks for help, Mike
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Kid_vicious
Senior Member
Username: Kid_vicious

Post Number: 2572
Registered: 9-2004


Posted on Thursday, July 05, 2007 - 8:52 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

mike,

usually crystals under 20mhz are the fundamental type. over 20mhz are the overtone type.

you will also need to know the required load capacitance.
sorry, i dont know what that spec is.

the best thing you can do is email lou franklin himself.
he is the one who designed these things, and he can answer your questions.
later,
matt
anyone wanting a "clean signal", just look to the left and build one of these!!!
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Bruce
Senior Member
Username: Bruce

Post Number: 4476
Registered: 9-2003


Posted on Thursday, July 05, 2007 - 11:50 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Skunkweed

YEARS AGO I had a Lincoln with the 2sc2229 mod, CHIPSWITCH and a channel guard The channel guard REALY tightings up the bandpass ... HOWEVER IF i remember right the filter is AFTER the FM takeoff point.
On 6 since 66

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