Registered: Jul 2009
Location: pembroke nc
Posts: 280

my dog usually gets up to 400 - 500 yrds when it starts to loose communication and I was wanting to improve the range I read somewhere that is said changing the frequency of the garmin will improve your range . my question is has anyone did this and did there range improve.

here is what I read :

Improving Signal Range for the Garmin Astro 220
ot many users of the Garmin Astro dog tracking system know that you can switch frequency to gain signal range. The Garmin Astro operates on five (5) different frequencies. These five frequencies are selectable in the Garmin Astro 220 Receiver handheld unit.
The Garmin Astro DC-30 and DC-20 transmit a radio signal to the Garmin Astro 220 handheld on 5, 10, or 30 second intervals. The range of that radio signal depends on the terrain where you are tracking. If you are in a flat terrain like a field, you will experience the best results in signal range. But if you are tracking in a rough terrain with hills and valleys, you will experience a signal range that is reduced.

The signal range is also dependant on a few technical factors:

1. the output power on the Garmin Astro DC-30 or DC-20 transmitter
2. the transmitter and receiver antennas
3. the frequency you have chosen on your Garmin Astro 220 receiver

Frequency: With the US version of the Garmin Astro, there are five (5) MURS* radio frequencies to work with:

151,82Mhz (ID code: 0-9)
151,88Mhz (ID code: 10-19)
151,94Mhz (ID code: 20-29)
154,57Mhz (ID code: 30-39)
154,60Mhz (ID code: 40-49)

How to Switch Frequencies

Switching frequency on the Astro 220 handheld unit is very easy and it is not published in the Garmin Astro User Manual. To change it, you simply need to change the pre-programmed ID code that your Garmin Astro DC-30 or DC-20 is using. For example, if your unit is currently set to ID code: 43, you can see on the frequency table above that the radio frequency you are using is 154,60Mhz. In this example, for better signal range, you should try an ID code between 0 and 9 (e.g. 5) so the unit is set on the lowest frequency: 151,82Mhz.

To assign a new ID code to your unit.

1. With the "Dog Tracker" page open, and the Garmin Astro DC-30 or DC-20 transmitter powered on, press MENU.
2. Select Change Comm. Settings.
3. Follow the on-screen instructions.
4. Select the desired ID-code and press OK
5. Choose the update rate you desire.
6. Follow the on-screen instructions to finish the setup.

ANY HELP WILL BE GREAT

thanks

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