Sigh
I have zero, no, as in "I don't know jack about the Yaesu FT-707.
You need to download a service manual and figure out
The IF strip, for instance, my Kenwood R2000 has
First IF variable 45.85MHz to 45.90MHz
Second IF 9.85 to 9.90MHz
Third IF 455kHz
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Then you need to find the input to the final IF (if it is fixed frequency) and tie in with a 1k resistor and feed the output of that resistor to the input of the PA0RDT Mini-Whip.
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I mounted the PA0RDT mini-whip antenna inside the case of my R2000 and use a chassis mount female BNC connector to feed the RF from the PA0RDT mini-whip to my SDR. Note, the PA0RDT must be in a shielded container. I used an altoid tins box and the BNC connector holds the tin in place. I use the 1k resistor as the fed through to carry the 455kHz RF into the PA0RDT, I used a 3/8 in hole to pass the resistor and heat shrink tubing to protect the resistor from the sharp metal edges, a narrow width plastic straw would also work.
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I'm sorry I can't offer more detailed installation directions.?
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