Changes

== Setup and Configuration == === Changing Frequency ===The pager's frequency is set by a crystal. You will need to get a custom crystal cut for your frequency.  ==== Crystal ====The UHF Advisor pager was configured to work on the [https://hampager.de/#/ DAPNET(https://hampager.de/#/)] frequency of 439.9875 MHz. The custom crystal used was sourced from [https://www.krystaly.cz KRYSTALY, Hradec Králové, a.s. (https://www.krystaly.cz)]. To achive the frequency of 439.9875 MHz, a crystal of 49.37634375 MHz was used. This is a 3rd overtone series resonant crystal. The holder is UM-1. ==== Bandpass Filter ==== === Programming Software ===Programming software is required to set things that impact the pager operation, including setting the CAP code. I was able to find the software archived here: https://web.archive.org/web/20090529000459/http://www.hackcanada.com/blackcrawl/cell/pager/mot.html === Serial Communication ===The pager uses 3.3V TTL 9600 baud 8N1 serial to communicate with the programming software. It is TTL 3.3V.