Measured operating values

   The table below contains the measured meter and drive values while tx's were in use.

Columns/abbreviations:

• tx/otx: transmitter number 1..6. otx:other tx on at the same time (only meaningful for sky)
• date, S/D : S =sky, D= dummy load
• drv dbf: rf drive as db full scale from gui (see calibration plots 151021:gui synth driver)
• pwr: KW is kilowatts (computed from rf coupler curves). dbm is the coupler value measured by spectrum analyzer.
  
• RP: reflected power  read from meter (before dividing by 10.)
• this will trip at 100 (100/10 = 10kw)
  
• FP/RP: foward power/reflected power (as read from the meters)
• BB: broad band linear amplifier in watts
  
• tube elements:  voltage, current for each tube stage (scrn,cathode only have currents)
• V = Volts, A= amps, mA=milliamps
  
• cGrid: control grid. The voltage values are the bias voltages
• scrGrid: screen grid.
  
• cath A  : cathode..

expected meter values when running at 100KW (from manual)

dates:

• 151021: tx5 on dummy load
• 151022: 1,4,5 on sky
• 151026: tx1-6 on sky no rf
• 151027: tx3 on dummy load, ipa glitching
  

Notes:

• Expected meter readings at 100KW.
• from txManual page 1026 (6-26)
• cw mode, midband, 10.54 Mhz, 100KW into dummy load.
  
• 
  

  Tube element	IPA		DRIVER		PA
  	V	I	V	I	V	I
  Filament V/A	7.13-7.87	75+/-15	6.0-6.6	160+/-20	14.75-16.25	215+/-20
  Filament V/A	7.13-7.87	75+/-15	6.0-6.6	160+/-20	14.75-16.25	215+/-20
  ctrlGrid V/mA	-270+/-20	10+/-10	-280+/-20	10+/-10	-380+/-30	50+/-50
  screenGrid mA	xx	30+/-5	xx	50+/-30	xx	180+/-100
  cathode A	xx	1.8 +/-.2	xx	3.5+/-.6	xx	16.25+/-1.5
  broadband amp	70-140Watts

  
  
• input voltages (from hvps cabinet)
• 
  

• acPwr	208 +/- 6V , 3 phase, 60hz, 10kVa
  	120 +/- 6V , 60Hz, 1kVa
  dcPwr	Voltage (kVdc)	Cur (amps)	tube section
  	11.4	20	pa Anode
  	4.5	6	drv Anode
  	3.5	4.0	ipa Anode
  	1.5	1.5	pa Scrn
  	1.5	.5	drv Scrn
  	1.5	.5	ipa Scrn

  
  

• filament voltages.
  

• Filament voltages

  tube	range Volts	Damage to tube if < this value (Volts)
  ipa	7.13-7.87	6.2
  drv	6.0-6.6	5.4
  pa	14.75-16.25	14.5

  
  
• Range and minimum values come from p 6-231 ->
  
• Tubes shall never be operated at voltages lower than:
• ipa 4cw10,000b: 6.2V
• drv: 4cw25,000b: 5.4 V
• pa:   4cw150,000e: 14.5 V
• Failure to comply will result in depletion of thorium, the emitting element...
• see 6-6.3.10.2 pg 6-232 for adjustment.

• Adjusting cathode current with no rf drive: 6-6.3.11 page 6-234:

• Cathode I, no rf CW mode

  tube	Version1 Amps
  IPA Ik	1.2 +/- .2
  DRV Ik	1.3 +/-.1
  PA,Ik	3.5+/-.1

  
  

To add more entries: edit and insert (vi) operating_value_template_insert.html at commented insertion point.
pink color is : Value out of specified range

tx otx	date S/D	drv dbf	pwr		RP	FP/ RP	BB W	Tube elements	IPA		DRVR		PA
			KW	dbm					V	I	V	I	V	I
5	151021 dmyLd	-3.6	90	16.8				Fila V/A
								cGrid V/mA					-300
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx	18.4
5	151022 sky	-3.25	83	16.5	30	25.	225	Fila V/A
								cGrid V/mA					-380?
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx	15
1 15	151022 sky	-7	87	16.7	35	23.	122	Fila V/A
								cGrid V/mA					-300
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx	12
4 145	151022 sky	-6	80	16.3	66	12	60	Fila V/A
								cGrid V/mA					-300
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx	14
151026 no rf drive
1	151026	0	0	0	0	0	0	Fila V/A	6.8	70	6.3	190	8	75
								Grid V/mA	-240	10	-240	12	-295	20
								scrGrid mA	xx	6	xx	10	xx	0
								cath A	xx	.7	xx	0	xx	0
2	151026	0	0	0	0	0	0	Fila V/A	6.7	60	5.8	150	14	175
								cGrid V/mA	-270	0	-250	0	-300	0
								scrGrid mA	xx	4	xx	0	xx	0
								cath A	xx	2	xx	.4	xx	3.5
3	151026	0	0	0	0	0	0	Fila V/A	6.6	70	6.2	150	13.5	210
								cGrid V/mA	-280	0	-265	0	-295	0
								scrGrid mA	xx	3	xx	0	xx	0
								cath A	xx	0	xx	.6	xx	2
4	151026	0	0	0	0	0	0	Fila V/A	6.3	60	6.4	195	14	240
								cGrid V/mA	-300	3	-270	3	-360	0
								scrGrid mA	xx	9	xx	1	xx	0
								cath A	xx	.1	xx	.4	xx	3
5	151028	0	0	0	0	0	0	Fila V/A	6.3	75	6.4	215	14.5	240
								cGrid V/mA	-280	2	-280	0	-310	badsw
								scrGrid mA	xx	5	xx	10	xx	0
								cath A	xx	.2	xx	.5	xx	4
6	151026	0	0	0	0	0	0	Fila V/A	6.8	50	6.5	140	15	250
								cGrid V/mA	-280	+100	-280	+100	-360	4.8
								scrGrid mA	xx	3	xx	0	xx	10
								cath A	xx	.7	xx	.2	xx	0
3 (1)	151027 dmyLd	-3 dbf	57 KW	14.82 dbm	1	50/1	200	Fila V/A	6.6	70	6.1	140	13.5	210
								cGrid V/mA	-260	0	-270	0	-320	0
								scrGrid mA	xx	27	xx	50	xx	50
								cath A	xx	0	xx	3	xx	13
3 (1)	151028 dmyLd	-3.6	86 88	16.65 16.75	1	85/1	158	Fila V/A	6.8	70	6.2	150	13.5	210
								cGrid V/mA	-250	0	-240	0	-310	110
								scrGrid mA	xx	27	xx	70	xx	100
								cath A	xx	0	xx	3.6	xx	15
								Fila V/A
								cGrid V/mA
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx
								Fila V/A
								cGrid V/mA
								scrGrid mA	xx		xx		xx
								cath A	xx		xx		xx

Daily Notes:

• 151027: ipa monitor on scope was glitching. same as 151026. will replace tube.
• 151028: ipa tube was replaced. ran for 30 minutes, only saw a few glitches.
  
• there are taps on the filament transformer. the table below shows the %error of the current values. You can use them to decide how many taps to move on the transformer.
  
  

Measured filament voltage and % error from optimum value

tx	ipa  (range 7.13-7.87)V		CurA 60-90	drvr range (6.0-6.6 V)		curA 140-180	PA  range (14.75-16.25)		curA 195-235
	MeasuredV	% error		measured	% error		measured	% error
1	6.8	10.3	70	6.3	0	190	8.0	93.8	75
2	6.7	11.9	60	5.8	8.6	150	14	10.7	175
3	6.6	13.6	70	6.2	1.6	150	13.5	14.8	210
4	6.3	19.0	60	6.4	1.6	195	14.0	10.7	240
5	6.3	19.0	75	6.4	1.6	215	14.5		240
6	6.8	10.3	50	6.5	3.1	140	15.0	3.3	250

• optimum value is mean (min,max)
• error:   (optimum - measured)/measured
• Voltage needs adjustment
• Current low
• Current high
  
• Adjustment taps have  2.5% steps.