Yaesu FT-101 fixed crystal question

[Tib2K]

I have just acquired 2 FT-101’s I am in the process of going through them to return them to service.

In the original 101 early way under SN 25.000 there are 4 fixed channel crystal sockets on the top of the VFO inside the top cover, only 2 are wired.

In the late model 101E there are only 2 on the speech processor board same location under the top cover.

In the external VFO there are 4 fixed crystal sockets

the front switch has spots to select VFO and each of the sockets.

Is there any documentation on radio settings to use them?


How to determine the required crystal value needed for the channel you want?


Thank you for any help you can provide!

 

[nomadradio]

Without looking for a manual right now, I can tell you that these crystals run at the same frequency as the VFO. They provide a fixed frequency that will be active on whatever band you select. Same as the VFO dial is active on whatever band you select.

The math is in the manual. I'll check back in later when I take a peek at the info.

73

 

[tecnicoloco]

All you want to know about your FT-101's is at this place

http://foxtango.org/ft101/foxtangoft101.htm

Enjoy the reading

 

[Tib2K]

Without looking for a manual right now, I can tell you that these crystals run at the same frequency as the VFO. They provide a fixed frequency that will be active on whatever band you select. Same as the VFO dial is active on whatever band you select.

The math is in the manual. I'll check back in later when I take a peek at the info.

73

Thank you @nomadradio

I had read through so much printed unsearchable data I had given up.
Your post reminded me look at the FV-101B VFO manual.

Bingo!

Now to find the right crystals?

73,
Tib

 

[nomadradio]

That's the formula, right there.

Tough part would be finding someone to make the crystal once you decide on a frequency.

73