Yep... Sounds right... On Jan 19, 2017 6:15 PM, "Chuck McCown" <ch...@wbmfg.com> wrote:
> Put a ruler down by the board and shoot another picture. > > The loading coil in the inductive antenna shortens it but hard to tell. I > would guess the shorter one is a quarter at 902 and the coil is the 315 MHz > antenna. > > Quarter wavelength at 928 Mhz is more like 3 inches. > > -----Original Message----- From: Mark - Myakka Technologies > Sent: Thursday, January 19, 2017 5:46 PM > To: af@afmug.com > Subject: [AFMUG] Enhancing my home automation system. > > I'm using a z-wave based home automation system. Works well even > though distance between devices is a bit too short. I have a z-wave > garage door opener that needs to talk directly to the base unit. > Haven't been able to get to work though any repeaters. > > Z-Wave runs on 908.42 mhz. So I figured I could just open the box put > a solder a jumper on, and attach an external antenna to give me more > range. Attached is a picture of the device. There are two antennas > in the device on for the zwave 908 and another for the door sensor > that runs around 300mhz. Not sure which one is which. Is the straight > one that is about 2" long the 900 or is it the curly one? > > The curly one is soldered at two point on the board, whereas the > straight one is only soldered at one point. Can anyone tell which is > which from picture? > > > > -- > Thanks, > Mark mailto:m...@mailmt.com > > Myakka Technologies, Inc. > www.MyakkaTech.com > > Proud Sponsor of the Myakka City Relay For Life > http://www.RelayForLife.org/MyakkaCityFL > > Please Donate at http://www.myakkatech.com/RFL.html >
