Info

title	Antenna Placement

All tests were performed with all antennas pointing up

Xbee interference with 433Mhz band
Xbee levels at 960mhz band
orangerx 433mhz
orangerx 960mhz
ezuhf 433mhz
ezuhf 960mhz
esc interference with 433mhz and 960mhz bands
gps interference with 433 and 960mhz bands
picpilot power supply interference iwth 433 and 960mhz bands
everything inside noise floor results (everything but uhf on for 433mhz test, everything but xbee on for 960mhz test)

Tests Performed:

Xbee@433Mhz
Xbee@960Mhz
OrangeRX@433Mhz
OrangeRX@960Mhz
EzUHF@433Mhz
EzUHF@960Mhz
Plane ESC@433Mh and @960Mhz
PicPilot Switching Powersupply at @430Mhz and @960Mhz
Integration Test Results @430Mhz and @960Mhz
- Involves putting everything inside plane, and testing 960mhz noise level when xbee is off, testing 430mhz noise level when uhf is off. This provides an overview of the entire noise floor at the frequencies we care about

Range checks

range Range check with dragon link powered by battery
range Range check with dragon link hooked up to esc directly
range Range check with dragon link hooked up to picpilot powered by battery
range Range check with dragon link hooked up to picpilot powered by esc
range Range check with dragon link hooked up to picpilot + esc + gps
range Range check with dragon link hooked up to picpilot + gps + xbee
range Range check with dragon link hooked up to picpilot + gps + xbee + dji
range Range check with everything inside plane ready to fly (packed in the same way as before flight, this is important to test antenna placements)

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PicPilot Switching Power Supply Testing

Location	Bay
Frequency Range	426-442Mhz
Condition	Picpilot off, rf explorer antenna right next to and parallel to the board
RF Explorer Antenna	Retracted
Max Level	-85.9
Max Hold Level	-85.9
Max Level Freq	entire range
Image	Image Added

Location	Bay
Frequency Range	426-442Mhz
Condition	Picpilot ON, rf explorer antenna right next to and parallel to the board
Notes	Max levels stayed the same, however average RSSI was way higher near 435Mhz. Note that this is when the antenna is RIGHT next to the power supply
RF Explorer Antenna	Retracted
Average Level	-86.23
Max Hold Level	-83.50
Max Level Freq	435.875Mhz
Image	Image Added

Dragon Link Testing

Location	Bay
Frequency Range	426-442Mhz
Condition	Dragon Link On, Lowest Power, 5ft away
Notes	Increasing power level created RF overload
RF Explorer Antenna	Retracted
TX Antenna	0.7dbi 398-428Mhz range
Max Level	-18.6
Max Hold Level	-18.6
Max Level Freq	437.10Mhz
Image

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Location	Bay
Frequency Range	899-960Mhz
Condition	Picpilot off, rf explorer antenna right next to power supply and parallel to board
RF Explorer Antenna	Retracted
Max Level	-85.83
Max Hold Level	-85.86
Max Level Freq	Entire range (noise)
Image	Image Added

Location	Bay
Frequency Range	899-960Mhz
Condition	Picpilot ON, rf explorer antenna right next to power supply and parallel to board
Notes	Average RSSI levels again higher, though not as high as 433Mhz band
RF Explorer Antenna	Retracted
Average Level	-91.95
Max Hold Level	-89.95
Max Level Freq	911.527Mhz
Image	Image Added

Location	Bay
Frequency Range	426-442Mhz
Condition	Xbee ON, <1ft Away
Notes	Not a significant noise level increase. Should avoid 435 band however
RF Explorer Antenna	Not Retracted
TX Antenna	3dbi 868-928Mhz Antenna
Max Level	-94.00
Max Hold Level	-91.00
Max Level Freq	435.857Mhz
Image	Image Modified

Location	Bay
Frequency Range	426-442Mhz
Condition	Xbee ON, Antennas next to each other
Notes	Basically the worst case that can occur. Raises noise level to about 75dbm. Happened when antennas were perpendicular to one another. This is why we should keep the antennas away from each other
RF Explorer Antenna	Not Retracted
TX Antenna	3dbi 868-928Mhz Antenna
Max Level	-76.50
Max Hold Level	-76.50
Max Level Freq	435.714Mhz
Image	Image Modified

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