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SATRA Electronics

SATRA Electronics. PWS 10/07/09. Antenna (Downhole) Cables. Cables shipped cut-to-length, terminated and wound (not on spools) Downhole cables: ~14” diameter winding with (3) removable ties Delay loops: ~14” diameter winding with (3) cable ties. Antenna Cable Breakouts and Connectors.

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SATRA Electronics

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  1. SATRA Electronics PWS 10/07/09

  2. Antenna (Downhole) Cables Cables shipped cut-to-length, terminated and wound (not on spools) Downhole cables: ~14” diameter winding with (3) removable ties Delay loops: ~14” diameter winding with (3) cable ties

  3. Antenna Cable Breakouts and Connectors Surface Anchor point Taped to IC cable Outside End of Deployment Winding Top Breakout ~4” pigtail Bottom Breakout ~4” pigtail To DAQ Suitcase at top of hole “s” 15m 5m 30m 5m Belden 1843A 75Ω Dual RG6: -0.045” BCCS -RG6 (INNER) -RG6 (OUTER) Delay and Attenuation Matching loop: Delay length = S Dual RG6 cut length = S/2 Placed at top of hole 15m 15m Belden 1152A TFE RG6 Jumpers 75Ω 36” long F-Male Crimp NK# 92N5307 F-Female: F-Female adapter NK# 79K4850 F-Female: BNC-Male adapter DK# 501-1155-ND DK= Digi-Key NK= Newark MS= Mouser BNC-Female: UHF-Male adapter DK# CPAD500-ND UHF-Female: UHF-Female adapter DK# 367-1083-ND

  4. Antenna DeploymentSame configuration for Top and Bottom Maple Dowel 4 ft long x ¾” OD McMaster 97015K19 Aluminum Bailing Wire Spacer Dual Coaxial Belden 1843A Brackets 4” RA McMaster 1556A17 =Driller Tape Plywood Disk ¼” 12” Diameter. w/ (4) 10-32 T-Nuts Belden 1152A TFE RG6 Jumpers 75Ω 36” long Plastic Clamp (2) Black Acetal McMaster 7429K47 Diamond Corp. D220 Discone -first whip element only Deployment Construction Detail

  5. 2 channel DOM MainBoard DAQ Main Board Interface PCB (2 ea) Communications And Power Main Board “U” Main Board “T” Noise input “B” Delay Boards Noise input “A” Pulse input “B” Pulse input “A”

  6. DOM MB DAQ WIRING SMA-M(RA):SMA-M(RA) 12” cable DK J4412-ND SMA-F:BNC-M adapter MS 523-242103 NK 80K0205 SMA-M(RA):SMA-F(BH) 12” cable DK J7212-ND

  7. 450 MHz TDA REF IN OUT Suitcase Interconnects Optional 2nd DAQ “WP1” Ch B (Ch4) Front End Assembly (2 or 4) 1 1 Ch A (Ch3) SATRA Y Adapter Ch B (Ch2) Ch A (Ch1) “WP0” BNC-F:BNC-F Feedthrough, DK ARF1735-ND BNC-M:SMA-F Adapter, NK 92C7248 MS 523-242103 = SMA-F = BNC-F SMA-M:SMA-M Coupler, NK 92H4682, DK ACX1240-ND = MS3112-E14-5P SMA-M(RA):SMA-M(RA) 12” Cable, DK J4412-ND = MS3116-F14-5S Mounted in Suitcase Wall After Shipment = MS3114-F14-5P 1

  8. MB Interface PCB

  9. TDA Schematic

  10. Patch Cables

  11. TDA front-end SweepBefore Log Amp, + Band-Reject Filter (BRF)Test output J4 (before log amp) is attenuated -40dB, Source was -60dB (~200uV RMS)

  12. TDA Sensitivity vs. Frequency

  13. TDA Output vs. Input Amplitude

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