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Old 09-14-2017, 11:03 AM
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Default Tristar F-250 Frequency counter

I bought a small frequency counter at the Boxboro Hamfest recently. The front says Tristar F-250 Frequency counter yet I cant really dig up much on the item in question. Whats its range and how do I interface it with an older radio?
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Old 09-14-2017, 11:51 AM
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A Google search suggests that this frequency counter is designed for Citizens Band frequencies.

Does your device have input and output SO-239 (aka "UHF") connectors? If so, there's probably some sort of RF tap inside the box that leads to a simple frequency counter designed for a fairly narrow band of frequencies around 27 MHz.

Just a guess.
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Old 09-14-2017, 11:53 AM
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hmmm :I I wonder if i can go down to HF frequencies (2-30MHz)
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Old 09-14-2017, 4:15 PM
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Or if I can somehow use the SIGNAL leads coming from the back to get a signal from the radio to the counter?
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Old 09-14-2017, 4:24 PM
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Does it look like this...

Frequency Counter FC-250 Equipment Galaxy Electronics,
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Old 09-14-2017, 4:25 PM
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Yes it just says Tristar instead of Galaxy, I wonder if Tristar had a UHF version, but damn 250Mhz not bad, so I could use it for CB or an old Gen coverage reciever, say, a Hallicrafters S-38B?
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