|
NO7RF
Mazama, Washington 98833
Mazama Bunny Testing
|
2-4-14: Now with 125mW output
(9dB less) |
I have a T-Hunt transmitter running in test mode in the
Mazama area. Originally it transmitted at 1 watt
ERP, but currently it is 125mW ERP. It is used
primarily fo me to test locally for
battery, timing, power levels/antenna types and their
coverage areas, etc. It will have different tones,
timings, etc while in testing mode and this is not
likely to be what is implemented for an actual hunt.
You can play along also if you like
even if only to hear what it sounds like and distance
coverage with your HT or mobile radios using your normal
antennas. Email if you wish to try to find it.
I am always listening to
146.52 simplex with PL
(100.0 encode) if you wish to be sure it's operational or you
wish me to turn it on for 90 minutes.
Much more information on T-Hunting on the
Forum. |
| Bunny
Details |
|
146.565 |
Transmits with CTCSS: 110.9
(listens .6 Mhz down at 145.965 on 110.9) |
|
Antenna |
2 meter J-Pole sitting 10 feet
above the ground at 2300' (200' HAAT) |
|
TX Power |
1 watt output for now to
enable longer range casual listening and broader testing |
|
Cycle |
Approx 1 minute; 15 seconds on, 45 seconds off,
CWID'er |
145.965
(Control) |
Receive and needs
CTCSS PL 110.9 and then DTMF; 1 is on, 2 is off. This is
standard .6 Mhz negative off-set, simplex only for voice
during the 45 seconds of silence |
|
dB Chart |
Power levels and /or how
to get confused very easily |
|
Try listening on
146.565 Mhz
while mobile on standard antennas. Confirmed areas
to hear to it are: Lost River, Early Winters, Big Valley
and along Hwy 20, Goat Creak and Wolf Creek Roads and
many parts of Wintrhop.
You will need to turn
it on by Tx'ing .6 Mhz down (145.965 Mhz) with tone of
110.9 and DTMF 1 to turn it on (2 is off). The
bunny will TX at around 50 second cycles for 90 minutes.
Take a quick check
from anywhere including some parts of Winthrop
especially if you are well above the valley floor.
Local T-Hunts will
begin in the Spring, sponsored by
MVARC. The inaugural hunt will have a
dual-band HT for the qualifying winner, a UV-5R.
If you wish to
actively play, you might
Email me prior just to be sure the bunny is
waiting for the hunter. ;-) |
| Mazama
Test Bunny General Coverage Results (at
1 watt ERP) |
|
Location |
Antenna |
Signal / RSSI / Quieting |
|
.85 mile away; through heavy
trees |
HT rubber duck |
40+, no
flutter, (Mobile 40+ no flutter) |
|
.85 mile away; through heavy
trees |
2M TDoA |
-88 dBm |
|
.85 mile away; through heavy
trees |
3 Ele UHF Yagi |
-95 dBm |
|
1.3 miles away; Almost LoS |
2M TDoA |
-56 dBm |
|
1.3 miles away; Almost LoS |
3 Ele UHF Yagi |
-85 dBm |
|
Hwy 20; Weeman Bridge
(.85m) |
2M TDoA |
(.85mi) /
-86 dBm |
|
Hwy 20; Weeman Bridge
(.85m) |
3 Ele UHF Yagi |
(.85mi) /
-106 dBm |
|
Hwy 20; Mazama Junction |
Mobile |
(4.2mi) /
100% Quieting with flutter |
|
Hwy 20; Mazama Junction |
2M TDoA |
(4.2mi) /
-114 dBm |
|
Hwy 20; Mazama Junction |
3
Ele UHF Yagi |
(4.2mi) / -80
dBm |
|
Freestone @ Hwy 20 |
2M TDoA |
(5.5mi) /
-87 dBm |
|
Freestone @ Hwy 20 |
3 Ele UHF Yagi |
(5.5mi) /
no signal |
|
Freestone @ Hwy 20 |
Mobile |
(5.5mi) /
20 to30+ with flutter |
|
Klipchuk@ Hwy 20 |
2M TDoA |
(12.6mi) /
-101 dBm |
|
Klipchuk@ Hwy 20 |
Mobile |
(12.6mi) / S6
with extreme flutter |
|
Winthrop; Red Barn |
2M TDoA |
(8.5mi) / -96
dBm |
|
Winthrop; Red Barn |
3
Ele UHF Yagi |
(8.5mi) / no
signal |
|
Winthrop; Red Barn |
Mobile |
(8.5mi) / 0
to50% quieting |
|
Winthrop Shafer Museum |
2M TDoA |
(8.8mi) / -98
dBm |
|
Winthrop Shafer Museum |
3
Ele UHF Yagi |
(8.8mi) / no
signal |
|
Winthrop Shafer Museum |
Mobile |
(8.8mi) / S5,
50% quieting |
|
Notes: noise floor
averaged -124 dBm, UHF beam sis not reliable, use a 2m
resonant antenna, TDoA antenna very helpful especially very
close in, Do not have TX programmed into your DF channel. |
|