Crystal Substitutes?

[KG4CGC]

So I found a couple of CB waklie talkies, one 3 channel one 6 channel. They use crystals. I want to mess around with one of them and see what what it will do.
What can I plug in or make to plug in the RX crystal socket to receive something other than CB? Variable capacitor? Anyone have a circuit diagram of something that will work like one that I can use to make it more frequency agile? It's not for any purpose other than to see what it will do.

[PA5COR]

An LC network around 9 MHz can work as VFO, but will stay limited in range.

[KG4CGC]

Something like this?

[K7SGJ]

If you are going to try that, I'd put a coupling cap between the collector and the rig so you don't run the 3 V supply into the radio.

[PA5COR]

Yep, that is how we broadbanded the 23 channel Cb's in the time.
And the TR 7200G of Kenwood a chrystal controlled 2 meter transceiver ;)
Bit finicky but it worked

[KG4CGC]

If you are going to try that, I'd put a coupling cap between the collector and the rig so you don't run the 3 V supply into the radio.

I'll measure the voltage from the socket to see if there is any, or enough voltage present to run it first.

[KG4CGC]

Yep, that is how we broadbanded the 23 channel Cb's in the time.
And the TR 7200G of Kenwood a chrystal controlled 2 meter transceiver ;)
Bit finicky but it worked

I'll see if there's anything left at the local RS. Ours is closing now.

[KG4CGC]

How 'bout that. A TRC 209 just fell into my lap. I think I have a mic that will fit it too. So far it's in 100% working order.

[NQ6U]

Something like this?

Where do you connect the leenyar?

[K7SGJ]

How 'bout that. A TRC 209 just fell into my lap. I think I have a mic that will fit it too. So far it's in 100% working order.

I hope you were wearing a cup.