If you have a pre-2012/08/19 Pigtail, it's possible to reconfigure the Pigtail to use this new
method however you'll have to update the firmware. In order to update the firmware on the
Pigtail you'll need to join the Pigtail to a wireless network that has Internet access. See the
Pigtail Firmware Update
section for instructions on how to do this upgrade.
Jumpers
Pigtail v1
The version 1 Pigtail contained a single jumper labled PIN4PWR. The purpose of the Pin 4
jumper (J2) is two-fold.
1. Simulate the RS-232 Data Terminal Ready (DTR) signal for any external devices that may
require it. The RS-232 specification states that signal levels must be between 3 and 15 volts.
The output from the voltage regulator is ~3.3 volts and with R1 in the path we come down to
around 3.1V, so we're right on the lower edge of the spec. Most computers today p5V
on pin 4 to signal the attached modem to go off hook.
2. Provide flea power to an external device. If you have a particular custom application that
could use some power, you can use the 3V on pin 4 if needed. An example of this, and actually
the reason this power connection was added, is if you have a custom Icom CI-V cable that
requires power on pin 4 to do the level conversion from RS-232 to TTL, you can use pin 4 to
power the PCB inside that cable.
Pigtail v2
The version 2 Pigtail has 3 jumpers. The jumper header is labeled J1 and there are three
jumpers installed in a unconnected manner out of the box. Along the edge of J1 are numbers, 1,
2 and 3. The meaning of those jumpers follows.
Jumper 3
: Jumper #3 provides the Pin 4 Power as described in the Pigtail v1 section just above
this text.
Jumper 2
: When the #2 jumper is installed and power it turned on to the device, it will pull pin 9
of the wi-fi module high. Upon sensing this state the wi-fi module will create an ad-hoc network
named WiFly-GSX-xx. If you had reconfigured your Pigtail to use infrastructure mode, you can
use this jumper to get into adhoc mode quickly without having to reconfigure the Pigtail. Out of
the box the Pigtail is configured for Ad-Hoc mode with the SSID Pigtail-XX. You would only