This is what I got from Whistler a long time ago:
Please read the START HERE guide for setting up the scanner. We provided two websites for 3rd party PC software vendors to program the scanner shown in step 3 of the Start Here guide. The Start Here guide is packaged with the Users Manual. (
https://www.butel.nl/shop/us/whistler/26-arc500-basic-software.html or
Download PSREdit500) Page 17 of the manual can be misleading as there is no approved software on
www.RadioReference.com
We have a step by step program instructions for the PSRedit500 program here -
Scanner User Guides.
Scroll to the bottom to see the software manual.
For ARC500 users, there is a user guide for this program located here -
ARC500 User Guide - The RadioReference Wiki
In order for the software program to have access to the frequency database, you will have to become a Premium Member of radioreference.com.
RadioReference Network Premium Subscription
NOTE: If the unit's PC/IF programming cable has a colored dot on the box that's in the cable, please read the bright colored insert that was packaged with the unit. This insert will give you instructions on how to properly configure the PC program to this cable.
If you want to program the unit manually, we have set up 2 easy Step-by-Step guides;
Conventional frequencies
Help Center & FAQs
Digital Trunking Systems
Customer help and frequently asked questions for Whistler products including radar detectors, power inverters, radio scanners, jump starters, dash cameras and inspection cameras.
whistlergroup.com
To find the frequencies to program, go to
www.radioreference.com and click on the DATABASE button. Select the state and then the county. The first listings are conventional frequencies. At the bottom of the listing there is an All Trunked Radio Systems section. This lists the Digital trunking systems in that county.
Follow the steps outlined in the HELP pages and you will be scanning in no time.