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I've went and ordered up a 900mhz spy camera setup(cheapo) and its stating 902-928mhz. I'm presuming its a single channel and because of the tuning knob, my frequency will vary. Any suggestion on the scaling factor for this one?

Thanks in adavance.

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It's anyone's guess; Maybe aim for something around 910MHz.

A/V Rx's with a tuning knob are usually marginal performing China models. So keep in mind that if you have poor results then it might not be due to the GP Patch.

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Thanks for the info. I received the unit today. I've got it dialed in fairly well. I'm only hoping for inddor range around 200' feet or so for indoor FPV. A golf dome would be the largest and 6 BB courts most of the time. Thanks again

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If you mean you want to solder a simple monopole antenna onto a cheap Hong Kong Tx, then a 1/4 wave element would be 3.08" long. I suggest making it 2X longer and then carefully trim it down for best range.

However, if you have a quality made Tx that has an SMA on it, then I suggest you use a commercially made 2-3dBi dipole. These are usually about $10-15 and are sold at all the popular FPV shops.

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