GB7PI – D-Star Repeater
GB7PI is the groups D-Star repeater:
| Location | Barkway | Access Method | DV |
| QTH Locator | IO92xa | CTCSS | N/A |
| Input Frequency | 430.9125MHz see NOTE |
Timeout | 3 minutes |
| Output Frequency | 439.9125MHz | Reaccess | N/A |
| Mode | D-Star DV | Reaccess Period | N/A |
| Polarisation | Vertical | Aerial | Stacked Dipoles (4) |
| Height AGL | 42m | Direction | Omni |
| Height ASL | 194m | ERP | 19w |
NOTE: In the band 430.0Mhz to 431.0Mhz, which the input of GB7PI falls, there are power limitations in the UK as per your licence. In this band both Intermediate and Full licence holders have an upper limit on their effective radiated power (ERP) of 40w, this is calculated as being the transmit power at the antenna (factor in coax losses) multiplied by the antenna gain, Foundation licence holders are limited to 10w ERP. As an example; if you using an antenna with a gain of 6dB then Intermediate or Full licence holders may only transmit 10w (6dB x 10w = 40w) and a Foundation licence holder is limited to 2.5w (6dB x 2.5w = 10w).
Gateway Application Form:
For access to the gateway features of D-Star you must be registered on the gateway. To apply for gateway access please fill out the form here.
D-Star Radio Settings:
| YOUR: | CQCQCQ or <Stations Callsign> | |
| RPT1: | GB7PI**B (* = space) | Note: ‘B’ is in the 8th position |
| RPT2: | GB7PI**G (* = space) | Note: ‘G’ is in the 8th position and is required! |
| MYCALL: | <Your own callsign> |
More information about using the gateway here.
Today’s usage on GB7PI:
Links:
Some useful links to see who is on and what is happening in the D-Star world.
| Users heard on GB7PI-B | http://www.jfindu.net/dstarlh.aspx?rptr=GB7PI |
| All D-Star users online (last 24 hours): | http://www.dstarusers.org |
| Users heard on REF005A | http://www.ukit.org.uk/ref005alh.html |
| DPRS Tracking | http://www.aprs.fi |
More D-Star links are available on the links page.
DV vs FM Comparison:
Below, you can listen to recordings made by Gavin, M1BXF between Bob (G1SAA) and Gavin using D-STAR on 70cm simplex (before the D-STAR repeater went on air). These were made to test the quality of signals and received audio.
Compairing weak FM with D-Star CLICK
Compairing strong FM with D-Star CLICK
Compairing G1SAA callsign between weak FM with D-Star CLICK
NOTE: You may copy these files for your own use just please acknowledge the source.

