I have this Si4703 evaluation board which I would like to modify to attach an external antenna. The board usually uses the plugged in headphone cable as the antenna.
One of the comments on the linked page claims this:
The antenna connection is Pin 2 of the SI4703. It is connected to the shield (ground) of the headphones via C5. This keeps the low frequency audio out of the chip. You would need to cut the trace between C5 and L1 and solder the antenna wire to the free end of C5. Keep C5 between the antenna and the chip.
Is this advice correct?
Can I simply desolder L1 and solder the antenna to one of the free ends (the one that is not attached to GND) or should L1 be kept? Will any of this effect reception?
Here's the circuit with C5 and L1 marked: