Guide for a portable radio device

1. How can I make the cable of ProGate

Please see the making guide.

2. Cable V1

V1 is a very simple cable model. (link)
Audio quality also is fine. Normally V1 cable would be a best choice.

3. Cable V2

V2 has resistance units to match impedance with Radio device. (link)
We think useally V1's audio quality would be better than V2. But if impedance is not matched, the cable would not work.

4. Cable V3

V3 is a more complex cable model. V3 has resistance, capacity and so on.
It can has path filters by using RC or LC curcuit.
Please refer to Documents/ROIP/Filters.