0300-0306Z Key Down at 2.350 Khz (Seems to Be Real Resonance) Power up to 110 KW. Whoopee

7 Oct 1987

1655Z Last night ran filaments and bias for awhile just to age the tubes and test out #1 Generator, now same with drive going till grid current produced. All this has checked out good so far.

1950Z HV on at 8 KV. Drive to peak at 4.8 KHz. Seems to be resonant there (EW antenna). I later figured out I was at the antiresonant point.

2101Z Running THRSH2 for kicks.

8 Oct 1987

0300-0306Z Key down at 2.350 KHz (seems to be real resonance) power up to 110 KW. Whoopee.

10 Oct 1987

1100-1159Z Experimenting with test transmissions of the program list to find out what power I can run all the segments up to without harm. This is all happening on the EW antenna.

1200-1259:59 Ran programs as cued on the Amplitude schedule except for a few minor mods and skipping the POLA2 section at 12:15

1300-1400Z. Ran the complete list (including all the POLA2) except for my minor modifications. They are stopping 1 sec short of the next start time when two programs run together soas to avoid one stepping on the other with a turn on and turn off and the same time.

Peak power 1200-1259Z was about 60KW Peak power 1300-1400Z (at 2350 Hz) 75KW Fset 2350 Hz

General note: NETH1 is really trashy. Has a big turn on transient at each second and if you look at the waveform when it's doing power ramps it has some zero modulation moments too. Maybe it's supposed to be this way?

14 NOV 1987

1100Z RUN SI 87B FOR THREE HOURS (TILL 1400Z) ALL RAN AT 2.350 KHZ FSET START WITH PK POWER 75 KW AT FSET ON ALL PROGRAMS. DURING FIRST HOUR OF RUN KICK UP POWER ON WIPPl (ATTEN FROM 10 TO 8.5), KICK UP POWER ON LANDA (ATTEN FROM 10 TO 9.5), AND ON NETH1 (ATTEN FROM 10 TO 9.5) ATTEN OF 10 DB PRODUCED P AT FSET OF ABOUT 70 KW. ATTEN OF 8.5 AT FSET PRODUCES POUT OF 100 KW.

1400Z SERIES OF TEST TRANSMISSION OF CW AND VARIOUS PROGRAMS TRYING TO GET THE POWER UP ON THE SI87B SERIES. CHANGED TO 150 OHM OUTPUT TAP AND NOW CAN RUN UP TO 100 KW AT FSET WITHOUT EXCEEDING PLATE VOLTAGE LIMIT.

1500Z FINISH FOOLING WITH JUPITER, TURN IT ALL OFF.

17 NOV 1987

MISSED 2 DAYS OF TRANSMISSIONS. TRIED TO GO TO STEREO AND FOUND

A) NS ANTENNA LOOKED BROKE. TURNS OUT TO BE PROB WITH POWER MONITOR BEING INTERMITTENT. STILL DON'T THINK IT'S FIXED.

B) BLASTED OUT AD7510 IN EXCITER CAUSING LARGE DC LEVEL IN OUTPUT. THIS CAUSED

C) FUSE TO BLOW IN HAFLER MASTER FOR PA1. and

D) PHASE SHIFTER TO LOCK UP (ANALOG SWITCHES IN IT) DIDN'T KNOW IT WAS ONLY THAT TILL HAD IT OUT ON THE BENCH AND IT WORKED FINE. ONLY NEEDED TO CYCLE THE POWER ON IT. WHEN LOCKED UP IT CAUSED THE HAFLERS TO SCREAM IN PAIN BUT THEY DIDN'T BLOW FUSES. ALL SEEMS TO BE STRAIGHT NOW. RAN SOME TEST TRANSMISSIONS AT LOW POWER, MOSTLY 2350 KHZ CIRCA 1600-1800Z

1100Z START RUNNING SI87B WITH ALL CIRC POLARIZATION. OOPS! MUST HAVE FORGOTTEN A STOP COMMAND ON POLA2. OVER RAN EVERYTHING AND KEPT GOING TILL I STOPPED IT AT 1141Z STARTED NOWS1 AT 1142 AND REST SHOULD BE OK.

1155Z OOPS! AGAIN. FORGOT TO SET LPROG TO 4 FOR NETH1 AND IT ONLY RAN ONCE AT 1151. STARTED BY HAND AT 1156 TO RUN OUT THE SEGMENT.

1206Z OOPS.2! I THINK THE POLARIZATION OF THE LAST HOUR WAS LH, NOT RH. I JUST FLIPPED IT AROUND.

1220Z AT THIS POINT I MUST REALLY ADMIT THAT I DON'T KNOW HOW MUCH POWER WE'RE PUTTING INTO EACH ANTENNA. THE VALUES LOOK SO DIFFERENT THAT I WOULDN'T EVEN GUESS. WITH EQUAL DRIVES TO EACH PA, AND EQUAL TUNINGS AND EVERYTHING ELSE, THE CATHODES ON THE EW SIDE RUN 1 AMP LESS. ANTENNA CURRENTS ARE 6.5 TO 5.5 (AS A RATIO) ON THE SCOPE FACE, THE 6.5 BEING EW.

1336Z INTERRUPT THE PROGRAM SO'S WE CAN SEE WHAT'S GOING ON. VERY QUIET EXCEPT SOME NATURAL EMISSIONS AROUND 500 HZ. A BIT LOW FOR US.

1340Z RECOMMENCE SI87B.

1342Z THINK WE MUST HAVE LET HSS42 RUN OVER MDIAG AT 13:35.

1424Z ENTIRE JUPITER KICKED OFF, INCL BLOWER??????

1426Z STARTED EVERYTHING AGAIN AND SEEMS OK?????STARTED POLA2 AT 1426 WHICH MEANS IT'S 1 MINUTE OUT OF SEQUENCE.

1440:30RESUME TRANSMISSIONS. STOPPED FOR A FEW MINUTES TO CHECK ACTIVITY. EMISSIONS STILL ABOUT 500HZ BUT GETTING MORE ACTIVE AND STARTING TO MOVE UP IN FREQ. WE MAY BE ABLE TO DO SOMETHING ABOUT THEM IN AN HOUR OR TWO.

1514Z PEAK POWERS AT FSET LOOK LIKE ABOUT 65KW ON NS, 55KW ON EW

1518Z STOP PGM AND ADD SMALL AMOUNT OF INDUCTANCE TO NS, RE ADJ DRIVE TO EQUALIZE POWERS AT ABOUT 65 KW EACH AT FSET

1526Z RESTART POLA2 ON SKED SI87B

1537Z ACCIDENTAL HV OFF FOR 15 SEC

1602Z KEY UP HV OFF TO LOOK AT ACTIVITY. KIND OF DIED DOWN, WHAT THERE IS IS STILL BELOW 1 KHZ, SO I'M NOT GOING TO TRY AND HIT IT.

1700Z FINISH SI87B FOR THE DAY.FIDDLE FOR NEXT 30 MIN WITH A COUPLE OF THINGS INCLUDING DE861 TO SEE IF IT'LL FLY.

19 NOV 1987

1015Z START TUNING UP FOR XMISSIONS

1023Z START SI87B WITH POLA2 ON SKED, PK PWR ABOUT 70 KW/CHANNEL AT 2350 HZ WHICH IS THE FSET TILL I GET A HANDLE ON THE ACTIVITY. THERE IS SOME NICE CHORUS GOING ON.

1103Z GEE, HOW'M I SUPPOSED TO SEE IF I'M DOING ANYTHING WHEN ABOUT ALL OF THESE PROGS SEGMENTS EITHER END IN A DOUBLET OR SOME WIERD LOW POWER THING; SO WHEN I DO KEY UP AND TURN THE HV OFF SO I CAN LOOK WHATEVER WAS GOING HAS BEEN SUPPRESSED OR THERE'S BEEN NOTHING TO REALLY CAUSE GROWTH ANYWAY?

1149Z GOING TO TURN OFF NOWS1 AFTER THE 40 SEC SQUEAK AND SKIP THE MDIAG SEGMENT SO'S I CAN SEE IF ANYTHING IS COMING OF IT.

1222Z FOOLING WITH POLARIZATION

1229Z KIND OF BACK TO NORMAL, PHASE SHIFTER SEEMS TO SHIFT PHASE ON NS BUT THE SINE (AT LEAST) PORTION OF EW DOESN'T DO ANYTHING UNDER COMPUTER CONTROL. e.g. IT STAYS AT ZERO SIGNAL.

1327Z WHAT I'MA GONNA DO HERE, AS WE DON'T HAVE ALL THE CHUNKS OF SI87E WRITTEN IS TO START POLA2 AT 1316, RUN TILL 1320, MDIAG AS USUAL, THEN DE861 TILL 1350 AND BACK TO NORMAL EXCEPT FOR SYNOPTIC BREAKS WITH THE USUAL MDIAG AT 13XX:30. KEEP IN MIND THAT POLA2 STILL HAS ONLY RH POLARIZATION FOR THE WHOLE THING TILL I FIX THE PHASE SHIFTER. PWR OF DE861 AT FSET 2350 IS ABOUT 50KW EACH ANTENNA.

1449Z GOING TO KILL IT AT 41 SEC TO LOOK FOR ECHOES AND ACTIVITY THEN RESUME WITH MDIAG AT 14:50:30

1600Z STOP TRANSMISSIONS FOR THE DAY, NOT MUCH HAPPENING AS A RESULT OF BURNING DFA. HAVE BEEN DELETING THE MDIAG SECTION AT XX:49:42 SO'S I COULD LOOK FOR ECHOES, ETC.

20 NOV 1987

1010Z START DE861, POWER A BIT LOW, BRING UP TO ABOUT 50KW EACH.

1020Z MDIAG AT SYNOPTIC BREAK

1021Z POLA2 FOR NEXT 4 MIN.

1025Z NOWS1

1027Z NETH1

1030Z DE861

1034Z THRH2

1035Z STANDARD SYN BREAK INCL MDIAG

1036Z ETC. SAME AS SI87F EXCEPT USING POLA2, NETH1, MDIAG, NOWS1, DE861, THRH2, STACO, AND CONTINUING NOWS1 THROUGH THE PAFC1 AND WEWP1 PERIOD.

1100Z CONTINUING RIGHT ON ALONG AS ABOVE, EXCEPT NOW, IN THE SI87F PACKAGE, WE'RE GOING TO DO THE CBEX1 AS PLANNED STARTING AT 1109 AND RUNNING TILL THE 11:20 SYNOPTIC BREAK.

1109Z FIRST COUPLE OF RUNS OF CBEX1 AT LOWER POWER, BUT BROUGHT UP TO ABOUT 65 KW PER ANTENNA AFTER 3 SORT OF SEGMENTS.

1143Z STOP DEl HIGH PASS/SI87F PSEUDO PACKAGE. RETURN TO SI87B WITH THE EXECUTION OF NOWS1 AT 1143Z. WILL KEY UP AND HV OFF AT 11:49:41 TO LOOK AT THE ACTIVITY.

1200Z MOVING RIGHT ALONG WITH SI87B

1215Z AGAIN, FOR REFERENCE, ALL PROG RUN WITH POWERS AS FOLLOWS.... WIPP1/ATTEN 8.5 DB FSET ABOUT 70 KW PER ANTENNA NETH1/ATTEN 10 DB FSET ABOUT 55-60 KW PER ANTENNA LANDA/ATTEN 9.5 DB FSET ABOUT 65 KW PER ANTENNA ALL OTHER 10 DB AT FSET SO LIKE NETH1 AT FSET

1249:41KILL NOWS1 TO LOOK AT ACTIVITY.

1251:20 OOPS, FORGOT A HV ON COMMAND AND DIDN'T GET THINGS ON TILL NOW.

1320Z NOTHING EXCITING GOING ON IN THE MAGNETOSPHERE WHILE LOOKING AT THIS SYNOPTIC PERIOD. VERY LOW FREQ AND LOW LEVEL CHORUS

1450Z STILL NOTHING EXCITING GOING ON. THINKING OF TURNING OFF EARLY AGAIN TODAY.

1529Z STOPPING TRANSMISSIONS FOR THE DAY. THERE WAS SOME uP ACTIVITY AND A BAY IN THE MAGNETOMETER TRACE LAST NITE, THE VLF SOUNDS LIKE JUST AFTER A SUBSTORM TYPE STUFF, SO I THINK NOTHING IS GOING TO HAPPEN FOR A NUMBER OF HOURS. IT SHOULD BE GOOD TOMORROW THOUGH. STOPPED RIGHT AFTER THE POLA2 SEGMENT.

21 NOV 1987

0950Z TEST TRANSMISSIONS

1002Z START THRH2, BUT STILL FIDDLING. LOWERING FSET TO 2275 HZ

1009Z START REGULAR SEQUENCE OF SI87B AND CONTINUE AT FSET 2275 FOR ALL PROGRAMS.

1020Z SCREWED UP THE SYN. PERIOD. FORGOT TO DO MDIAG, AND DIDN'T START POLA2 AGAIN TILL 1022Z. LOTS OF CHORUS, INCLUDING AROUND FSET. PEAK POWER AT FSET ABOUT 55KW FOR MOST PROGRAMS. ATTEN SET TO 10 DB. 9.5 FOR LANDA AND 9 FOR WIPPE.

1140Z MOVING RIGHT ALONG. STILL NO APPARENT ECHOES. ACTIVITY HAS REMAINED SORT OF THE SAME, CHORUS UP TO ABOUT 2KHz. OCCASIONAL WHISTLERS WITH NOSES THAT LOOK LIKE ABOUT 3 KHz

1220Z CHORUS HAS DISAPPEARED. VLF LOOKS DEAD, BUT I MISSED THE TURNOFF OF HV SO DON'T KNOW IF THERE MIGHT HAVE BEEN ECHOS.

1315Z STOPPING SI87B AT THIS TIME (WIPPE) TO TRY SOME OF THE DE1 PROGRAMS WE HAVENT RUN YET, TO SEE THE ACTIVITY GOING ON, AND MAYBE TO RETUNE. ACTIVITY STILL DEAD, WITH OCCASIONAL WHISTLERS. NO ECHOS.

1313Z STOPPED THE SHEBANG AT THIS TIME. TESTED ISIS1, AND PRCP5 FOR A BIT STARTED SI87E AT THE 13:26 POINT WITH POLA2.

1350Z END OF LOW PASS DE PROGRAM, (ENDS WITH PRCP5 WHICH IS A TURKEY PROGRAM AS IS DOESN'T HAVE ANY WAY TO CONTOL ATTENUATION OR FREQ.

1400Z PLAYING WITH PRCP5 TO SEE IF WE GET ECHOS. START THRH2 LATE. ALSO STARTED WIPPE AT 14:06 AT 2275 FSET AND MOVED UP TO 2350 AFTER A MINUTE OR SO.

1450Z NO ECHOS VISIBLE. WHISTLERS HEARD

1500Z STOP SI87B "AMPLITUDE SCHEDULE", START SI87C "PHASE SCHEDULE"

1504Z STACO NOT RUNNING, SUSPECT BUG IN PROGRAM {LOOP CONTROL NOT SET}

1520Z NO ECHOS. WHISTLERS HEARD.

1550Z NO ECHOS. BOTH TECA2 AND CISP WERE RUN AT 15DB ATTEN FOR THEIR FIRST CYCLE THROUGH TO LOOK FOR SPARKS. THEN ATTEN WAS SET FOR lODB SO FSET POWER LOOKS LIKE ABOUT 55KW PER ANTENNA.

1600Z TERMINATE SI87C AT THIS POINT. GOING TO CHECK POWERS OUT AT lODB ATTEN ON EX AT + AND - 500 FROM FSET.

PWR AT FSET NS = 55KW

EW = 45KW

PWR AT +500 NS = 20KW

EW = 15KW

PWR AT -500 NS = 20KW

EW = 800W

IF WE DO THE AMPS TIMES VOLTS TRICK TO CHECK ON THE POWER METERS, WE GET

PWR AT 2310 ON EW 48KW

PWR AT 2330 ON NS 60KW

22 NOV 1987

1220Z START SI87B WITH THE POLA2 SEGMENT, THIS TIME REALLY DOING THE POLARIZATION SHIFTS!!!!!!!! MISSED THE DE-PASS AND THE EARLIER STUFF. I WAS JUST BURNED OUT AND NEEDED SOME SLEEP. WE'LL SEE HOW WE KICK UP THE MAGNETOSPHERE.

1236Z MISSED FIRST 2 MIN OF LANDA; DIDN'T RECONFIGURE IT AFTER LOADING. 1251Z USING THE NEW NETHA INSTEAD OF NETH1. USES IDLER FREQ AT 3 FSET. 1300Z FOLDING THROUGH STACO INTO THE SI87C SCHEDULE FOR THIS HOUR 1306Z STARTED WIPPl WITH WRONG FSET AND HIGH ATTEN. FIXED BY 1308Z 1318Z PC1M1 RUN AT EX ATTEN 8.5 DB

1336Z RUNNING CBEXl AT ATTEN 9 DB

1500Z STOP RUNNING SI87C FSET HAS BEEN 2350Hz AGAIN.

22 NOV 1987

1336Z RUNNING CBEX1 AT ATTEN 9 DB

1500Z STOP RUNNING SI87C FSET HAS BEEN 2350Hz AGAIN.

NOV 24 1987

0915Z START SI87B. ACTIVITY LOOKS LIKE CHORUS RIGHT AROUND 2.5 KHz. FIRST KEY UP AT 0920Z DIDN'T SHOW ANY POSITIVE LOOKING REACTIONS BUT THERE MAY HAVE BEEN A RISER THAT LOOKED LIKE ONE OF THE POLA RAMPS.

1000Z START DE-1 HIGH PASS STUFF (SI87E FOR 10 MIN)

1010Z START SI87F...... FOR REMAINDER OF PASS

FOR GENERAL NOTES HERE, A REMINDER OF FSETS.

PROG / FSET / FIDLE
DE861 / 2350
ISIS1 / 2350
CBEX1 / 2350
POLA2 / 2340
MDIAG / 2350
NOWS1 / 2350
NETHA / 2350 / 3XFSET
STACO / 2350 / 7050
THRH2 / 2350
HSS42 / 2350
LANDA / 2350
TECA2 / 2350
CISP / 2340
PC1M1 / 2350
PRCP5 / NONE

1050Z NO EMISSIONS OBSERVED AS A RESULT OF THE TRANSMITTER: STILL CHORUS AROUND THAT FREQ., BUT QUIETING DOWN.

1100Z OOPS! STARTED THE WRONG SATELLITE PROGRAM. DID DE861 AND ISIS1 AS IN SI87E TILL 1105. THEN FIXED THINGS AND BACK TO SI87F 1130Z STOP THE DE STUFF, BACK TO SI87B WITH A START OF HSS42 AT 1131Z

1200Z CONTINUING WITH SI87B. NOT MUCH VLF ACTIVITY GOING ON EXCEPT CHORTLES LIKE POST STORM STUFF AGAIN. MAG FIELD HAS BEEN VERY ACTIVE.

1239Z OOPS, STOPPED LANDA 1 MINUTE EARLY.

1300Z I'M GOING TO BE DARING AND TUNE DOWN A BIT HERE.KEY UP AT THIS TIME FOR RE-TUNING AND CHECKING OUT THE VOLTAGES AT THE NEW FREQ. HAVE BEEN RUNNING TWO PROGRAMS AT ATTEN 8.5 DB. WIPP1 AND NOWS1.

1316Z RESTART SI87B WITH FSETS AT 1600HZ

RESET FSET POLA2 AT 1620 (N=27)

FSET NOWS1 AT 1620 “

FSET THRH2 AT 1620 “

ALL THE REST ARE GOING TO BE 1600 FOR THE TIME BEING.

1400Z SKIP 1st MINUTE OF THRH2 OF SI87B TO LOOK FOR ECHOS ETC.

1406Z OOPS STARTED WIPPl WITH FSET AT 2350, CHANGED TO 1620 @ 1408 1416Z TURN OFF FOR A BIT TO CHECK POWER LEVELS AT FSET, +/- 500

FREQ / POWER NS ATTEN 10 / POWER EW ATTEN 10 / POWER NS ATTEN 8.5 / POWER EW ATTEN 8.5
1620 / 35KW / 30KW / 50KW / 40KW
1600 / 35KW / 30KW / 50KW / 45KW
1100 / 800 / 0 / 800 / 0
2100 / 700 / 500 / 900 / 700

1426Z START SI87B WITH POLA2 AT THIS TIME, STILL 1620 TYPE FSETS.

1450Z ACTIVITY QUIETING DOWN. STILL NICE NATURAL EMISSIONS AROUND 2KHz BUT THEY'RE PRETTY SPORADIC.

1500Z MOVING INTO THE PHASE SCHEDULE, SI87C FSETS AT 1980 WILL TAKE A FEW MINUTES TO RETUNE.

1500Z STOPPING TRANSMISSION FOR THE TIME BEING. REALLY LOUD HUMMING COMING FROM PLATE CONTACTOR.

25 NOV 1987

0910Z STARTED SI87B (WITH A COUPLE OF BURPS AT THE BEGINNING) AT FSET 2350Hz EXCEPT THRH2, NOWS1, AND POLA2 WHERE FSET IS 2340. WILL RUN SI87B AND SI87C (AMPLITUDE AND PHASE SCHEDULES) ALTERNATELY IN ONE HOUR INCREMENTS UNTIL 1700Z.

1018Z CHANGED ATTENUATION IN PC1M1 FROM 8.5 TO 9.0 AFTER THREE PA OVERLOADS.

1200Z CHANGING FSET FROM 2350 TO 3600. 1244Z RESTARTED PHASE SCHEDULE WITH CBEX1. 1310Z STARTED SATELLITE PASS WITH MINUTE TEN OF SI87E FORMAT (PRCP5). 1335Z CONCLUDED SATELLITE PASS AND RESUMED AMPLITUDE SCHEDULE AT MDIAG. 1500Z ENDED TRANSMISSIONS FOR THE DAY DUE TO LACK OF ECHOES.

26 NOV, 1987

0844ZTUNED UP XMTR FOR FSET OF 2320, WITH TUNING OF L3 INDUCTOR ON NS AND NONE ON EW, NO CAPACITORS ON NS AND EW, AND IMPEDANCE OF 100 OHMS. POWER: 45KW ON EW AND 47KW ON NS. ACTIVITY: NOISE BAND UP TO ABOUT 500HZ.

0854ZBEGAN XMISSION OF SI87B WITH NETHA.

0915ZTHERMAL OVERLOAD DURING WIPPE. INCREASED ATTENUATION FROM 9 TO 10. RESTARTED WITH PC1M1 AT ABOUT 0917Z.

0950ZNATURAL ACTIVITY: NOISE BAND INCREASED FREQUENCY TO ABOUT 2.5 KHZ; RISERS AUDIBLE.

0955ZBEGIN SATELLITE PASS WITH TEN MINUTES OF SI87E, STARTING WITH ISIS1, THEN CONTINUING WITH 80 MINUTES OF SI87F, STARTING WITH

0956ZTHERMAL OVERLOAD IN POLA2. CHANGED ATTENUATION FROM 10.0 TO 10.5. RESTARTED POLA2 AT 0959Z.

1003ZTHERMAL OVERLOAD IN ISIS1. RESTARTED ISIS1 AT 1004Z.

1020ZNATURAL ACTIVITY: MOVED FARTHER UP IN FREQUENCY. NOW CHORUS EXTENDS TO 3KHZ. IN ADDITION, ANOTHER BAND OF ACTIVITY FROM ABOUT 4.5 TO 6KHZ. NO ECHOES SEEN, HOWEVER.

1102ZTHERMAL OVERLOAD IN DE861. RESET ATTENUATION FROM 10 TO 10.5. RESTART WITH MDIAG AT 1105Z.

1150ZNATURAL ACTIVITY: SLIGHTLY LOWER IN FREQUENCY. NOW LOWER BAND REACHES ABOUT 2.5KHZ. NO ECHOES OBSERVED.

1157ZTHERMAL OVERLOAD IN CISP. RESET ATTENUATION FROM 9 TO 9.5. LOWERED ALL OTHER FORMATS' ATTENUATIONS TO AVOID OVERLOADS.

1210ZTHERMAL OVERLOAD IN WIPPE. RESET ATTENUATION FROM 9.5 T0 10. RESTARTED WIPPE AT 1212Z.

1239ZANOTHER THERMAL OVERLOAD. RESET ATTENUATION IN LANDA FROM 10.0 TO 10.5. RESTARTED WITH NOWS1 AT 1241Z.

1316ZYET ANOTHER THERMAL OVERLOAD. RESET ATTENUATION IN PC1M1 FROM 9.5 TO 10.0. RESTART PC1M1 AT 1318Z.

1425ZBILL RECOGNIZED THE REASON FOR THE THERMAL PROBLEMS IN ABOUT 10 SECONDS: I HADN'T REDUCED THE CUBIBLE THERMOSTAT.

1550ZNATURAL ACTIVITY: DON'T BE JOKING. LOWER BAND DROPPED IN FREQUENCY TO ABOUT 2KHZ UPPER LIMIT. FEW EMISSIONS, NO ECHOES.

1650ZNATURAL ACTIVITY: BAND MAXIMUM DROPPED FURTHER TO ABOUT 1.6 KHZ. NO ECHOES.

1700ZEND OF SCHEDULE.

27 NOV, 1987JUPITER OPERATION LOG

0740ZNATURAL ACTIVITY: VERY LOW BAND WITH MAXIMUM FREQUENCY ABOUT 500HZ.

0750ZTRIED TO TUNED UP XMTR TO 2320, BUT PHASE SHIFTER DIDN'T OUTPUT SIGNAL. EXTENDED SHIFTER FROM RACK AND CHANGED ONE BNC CONNECTOR THEN SIGNAL CAME THROUGH. APPENTENTLY BAD CONNECTION WAS AT LEAST ONE PROBLEM. ANOTHER PROBLEM INDICATED BY LACK OF AC POWER SIGNAL ON FRONT PANEL OF PHASE SHIFTER. SEEMS TO BE FUNCTIONING NORMALLY NOW, SO I'LL WAIT AND CHECK IT AFTER THE TRANSMISSION SKED.

0838ZSTARTED TRANSMISSION OF SI86B WITH LANDA. SAME TUNING AS YESTERDAY: NO CAPACITORS OR INDUCTORS ON EW, ONLY L3 (SECOND SMALLEST) INDUCTOR ON NS, FSET=2320 FOR ALL FORMATS EXCEPT POLA2 WHICH HAS FSET=2340 (N=39), ATTENUATION SET AT 9 FOR ALL FORMATS AND WITH 6.6 SYNTHESIZER GAINS GIVES ABOUT 63KW ON EW AND 61KW ON NS.

0840ZLANDA INTERRUPTED FOR 1 MINUTE BECAUSE I SET LPROG TOO LOW.

0846ZNOWSl INTERRUPTED FOR 1 MINUTE BECAUSE I SET LPROG TOO LOW.

0853ZNETHA INTERRUPTED FOR 1 MINUTE BECAUSE I SET LPROG TOO LOW.

0900ZGENERATOR OVERLOAD DURING STACO. SET SYNTHESIZER GAINS TO 6.0. ALSO I DISCOVERED THAT I HAD LEFT THE SYN2 GAIN AT ABOUT 2.5. RESUMED TRANSMISSION OF STACO AT 0902Z. WILL MEASURE POWER OUT AT END OF SCHEDULE.

1020ZNATURAL ACTIVITY: ABOUT THE SAME AS 0740Z. NO ECHOES SEEN.

1125ZNOTICED NOVA CLOCK RUNNING 2.9 SECONDS SLOW. RESENT TO ABOUT 0.1 MS FAST. RESTARTED SI87C WITH POLA2 AT 1129Z.

1150ZNATURAL ACTIVITY: MARKED CHANGE IN CHORUS. FREQUENCY MAXIMUM NOW ABOUT 1.5KHZ. NO ECHOES OBSERVED.

1250ZNATURAL ACTIVITY: SAME AS LAST.

1303ZSTART HIGH SATELLITE PASS. WILL END AT 1433Z.

1306ZOVERLOAD BECAUSE I FORGOT TO TURN DOWN SYNTHESIZER GAINS FOR PRCP5. RESTART PRCP5 AT 1308Z.

1420ZNATURAL ACTIVITY: CHORUS BAND DECREASED IN FREQUENCY TO ABOUT 1.3KHZ MAXIMUM. NO ECHOES.

1520ZNATURAL ACTIVITY: FUTHER REDUCTION IN CHORUS TO ABOUT 800HZ MAXIMUM FREQUENCY. SOME EMISSIONS AT 2 TO 3KHZ. NO ECHOES.

1601ZPOWER WITH SYNI=SYN2=6.0 AND EXA=9.0:50KW ON NS AND 50KW ON EW.

28 Nov, 1987Jupiter Operation Log

0730ZTuned up xmtr for 2320Hz with no capacitors or in EW, smallest inductor (L4) in NS. Synthesizer gains both set at 6.6. Attenuation for all formats except STACO set to 9; STACO attenuation = 10.5. With attenuation = 9, power out is 57KW on both legs. Done at 0752Z.

0756ZNatural activity: bands at 0-1.6KHz and 4-6KHz.

0820ZNatural activity: bands at 0-400Hz and 1-3KHz. No echoes.

0844ZCorrected NOVA clock from 18ms slow to 0.2ms fast.

0850ZNatural activity: bands at 0-400Hz and 1-2.5KHz. No echoes.

0931ZGenerator overload in HSS42. Increase attenuation in this format to 9.5 from 9.

0948ZBegin low satellite pass (SI87E for 25 minutes).

1004ZTHRH2 scheduled to run, however DE861 continued one extra minute due to schedule conflict.

1020ZNatural activity: band at 0-1.5KHz. No echoes.

1621ZInterruption of transmitting due to operator error. Resume xmitting at 1024Z.

1700ZEnd of transmitting for today.

29 Nov, 1987Jupiter Operation Log

0720ZTuned up antenna to 2320Hz. No capacitors or inductors on EW, and on L4 (smallest inductor) on NS. Synthesizer pots set at 5.85 each. Power out with attenuation of 9: 42KW EW, 41KW NS at 2320Hz, 18KW EW, 20KW NS at 2820Hz, 7.5KW EW, 17KW NS at 1820Hz. Done at 0743Z.

0743ZNatural activity: band at 0-500Hz; no emissions; no echoes from MDIAG.

0800ZStart transmitting with SI87C.

0820ZNatural activity: same as last.

0920ZNatural activity: band maximum frequency increased to 1KHz.

1020ZNatural activity: band maximum frequency increased to 3KHz.

1120ZNatural activity: band maximum frequency increased to 5KHz.

1158ZMissed transmission of POLA2 due to operator error.

1220ZNatural activity: band maximum frequency decreased to 3.2KHz.

1258ZBegin low satellite pass with POLA2.

1323ZEnd satellite pass with DE861; resume SI87B at POLA2.

1420ZNatural activity: band maximum frequency increased to 3.5KHZ.

1450ZNatural activity: band same as last; beautiful 6 hop echoes of the TECA2 format heard. First echoes of transmitter seen this season.

1505ZWanted to see echoes again, so ran TECA2 instead of THRH2 this minute and observed 8 hoppers. Band continues to have maximum frequency of about 3.5KHz with emission on top.

1650ZNatural activity:

1700ZEnd of transmission schedule.

30 November, 1987Jupiter Operation Log

0720ZTune up transmitter to 2350Hz with no capacitors or inductors in EW and only smallest inductor (L4) in NS. Synthesizer gains set at 5.85 each giving output powers at exiter gain of 9 of: 40KW EW and 36KW NS at 2350Hz, 17.6KW EW and 20KW NS at 2850Hz, and 7.OKW EW 15KW NS at 1850Hz.

0750ZNatural activity: two bands at 0-500Hz and 2.6-3.6KHz with many emissions between 3 and 7KHz; upper band rapidly diminishing in strength and breadth such that about 2 hours ago the band spread from 2.5 to 5KHz and was much stronger.

0800ZBegin transmission schedule with SI86B.

0850ZNatural activity: upper band now much weaker than last and reduced in range to 2.8-3.2KHz; still many emissions above upper band, but no echoes observed.

0920ZNatural activity: upper band nearly gone; few emissions, however strange "chirps" that may have been correlated with transmission of PC1M1 heard.

0941ZHigh voltage overload due to running of PRCP5 without reducing synthesizer gains to 2.0. Changed gains and restarted PRCP5 at 094428Z. Also, this marks beginning of a high satellite pass.