FWD VOLTAGE ADJUST FOR TP1 (BOARD A5) 7 V AT 500 W
V FWD
V REF
+13.5 V TEMPERATURES TPs
LOOP GAIN CONTROL R93
MAX PLATE CURRENT LIMITS MAX OUTPUT AVAILABLE POWER MAX AM CARRIER ADJUST SET TO 250 W FULL CW FOR FULL PWR (NOT ADVISED !!!) SWR PROTECTION INHIBIT FOR TUNE MAX TUNE PWR ADJUST FUL CW = FULL PWR MAX POWER ADJUST FUL CW = FULL PWR
R122
OR 250 W ON A POWERMETER
225 mA IS FOR 250 W IN TUNE. FOR 1 kW MAX DONT USE THIS VALUE
A2A3
A5
A3
A7
A6
A9
+13.5V VIA SERIAL RES 2.2 k
GND
B C D INPUT
8124
+5V WHEN BANDSWITCH IS MOVING
TRANCSEIVER
RF IN TO BAND DECODER
ANTENNA
ANTENNA RELAY
RF IN TO TUBE CATHODE
R4 BRIDGE NULL + 13.5V T/R KEYLINE FROM A6 R7 FWD SAMPLE ADJUST 7V @ 500 W
RFOUT FROM PI NETWORK
RF MONITOR
V FWD 7 V @ 500 W V REF
LOOP GAIN CONTROL FULL CCW TO INCREASE POSSIBLE POWER. SEE LED DS2 GLOWING.
IF BIAS CURRENT IS MORE THAN 60 mA, OR LESS THAN 40 mA, SEE MOD DESCRIBED IN F1FRV's SERVICE MANUAL PAGE 139 WITH COMMENTS ABOUT R93.
MAX AM CARRIER ADJUST FULL CW FOR FULL PWR (NOT ADVISED !!!). BY DEFAULT 250 W, CAN BE INCREASED UP-TO 350 W
MAX PLATE CURRENT ADJUST SEE ALSO F1FRVs OPERATION MANUAL PAGES 37 & 38 ... MAX POWER ADJUST FUL CW = FULL PWR
R121
TUNE PWR ADJUST FOR ANTENNA TUNER WHEN "TUNE PWR" ON. (200 W BY DEFAULT)
R122 LED DS2 (YELLOW), GLOWS WHEN POWER LIMITATION.
14
JUMPER
8
JUMPER
JUMPERS PTT BIAS
1
+5V BDSW ON
PTT
PTT ANT RELAY 2, 3, 4 SPARES TO DB25 PINS 20, 8, 21 AVAILABLE
STD-BY LED POWER ENABLE LED POWER ENABLE OPERATE LED
ROTARY BAND SWITCH HV ON LED
FAULT LED
LOCAL KEY
SELF TEST CW/CCW
ROTARY METER SWITCH TUNE PWR
1
10 R19
COMPONENTS SIDE VIEW
FRONT PANEL
Manufacturer GRAYHILL
FRONT PANEL
Manufacturer C&K
ROTARY SWITCH 55P3001110NF CAN BE REPLACED BY 51 OR 56 SERIES Original 55 Serie (NOW OBSOLETE) http://dkc3.digikey.com/PDF/FR2011-FR/P2473.pdf http://media.digikey.com/pdf/Data%20Sheets/Grayhill%20PDFs/55DP30-x%20Drawing.pdf /////////////////////////////////// EXACT REPLACEMENT http://fr.farnell.com/grayhill/51cdp30-01-1-ajn/switch-rotary-sp12t-200ma-220v/dp/1384618 http://www.digikey.fr/product-detail/fr/51DP30-01-1-AJN/GH7278-ND/764221 http://www.grayhill.com/web1/images/ProductImages/Rotary_50,51.pdf /////////////////////////////////// Alternatives (LESS EXPANSIVES) body length 0.48" (12.19 mm) instead of 0.537" (13.64 mm) http://fr.farnell.com/grayhill/56sdp30-01-1-ajn/commutateur-1pole-12-pos/dp/1190377 http://www.digikey.fr/product-detail/fr/56DP30-01-1-AJN/GH7279-ND/483187 http://www.grayhill.com/web1/images/ProductImages/Rotary_56.pdf ///////////////////////////////////
2
GND
+13.5V
+19 TO 30 V (~ 24 V DC)
PIN 1
PINS 13 & 25
1086-3100
1086-3100
1086-7100
1086-3100
+13.5V EXTERNAL REQUIRED
1086-3100
10086-3100
1086-3100
10 nF
10 nH 15 Ohms
40 nF 10 nF
100 Ohms
40 nF
5 nF
BCD IN
TO REPLACE THIS RELAY AND USE A 24/28 V RELAY TAKE +19-30V AVAILABLE
CUT
SOFT START ON +13.5V DC
BLOWER
U1: MC1558
SAFETY
+13.5V MAX R93
TO REDUCE BIAS CURRENT IF IT IS TOO HIGH ( MORE THAN 60 mA), PLACE A 500 OHM OR 1k VARIABLE RESISTOR BETWEEN R93 AND Q1. ABOUT 50 mA IS OK. IF BIAS CURRENT IS TOO LOW, REPLACE R93 BY A LOWER VALUE (eg. 820 OHMS OR 1k)
-8V NOMINAL MEASURED -9.2 V
STRAP R131
+5V WHEN MOVING
TO DB25 PIN6
2 JUMPERS
JUMPER
TO BIAS SWITCH
3 SPARES TO DB25 TO DB25 PIN20 TO DB25 PIN 8 TO DB25 PIN 21 R112 TO R114 NOT INSTALLED
TO ANTENNA RELAY
U11,U20,U30: ULQ2003A DRIVERS 500 mA @ 50 V MAXI
JUMPER
A9
STEP START FOR HV
WITH 208 V INSTEAD OF 230 V, ONLY HIGH VOLTAGE IS INCREASED. TO BE DONE
140 141 14.2 14.3 14.35. Frequency (мнz) ... anchor. (15.39 ft). 6:1 Balun to ground to TX anchor the whole antenna to be easily tuned during final adjustments.
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3 kV, anode current 20 mA), absolute value, V. -150. Anode current, A. 1.5. Anode current at zero grid 1 voltage (at anode voltage 250 V), mA, at most 4.2.
Jan 8, 2004 - shown in Figure 1, the circuit is not good enough at frequencies above ... file:///G|/TUBES/4CX1500/Technical%20Bulletin%2040.htm (1 sur 6) ...
several others for your specific application by downloading a complimentary copy of the "RF Calculator" at www.bird-electronic.com. Example 1: Directivity of 25 ...
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Aug 22, 2014 - Q1 on F1FRV boards. 33 K. Input cells are Yellow. Results are Red. Step. 1. Enter unregulated input voltage: Vu = 500. V at load ~. 160 mA. 2.
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Oct 20, 2006 - Document layout change ... How can you actually measure the electrical characteristics of a diode? rf and ... time) measured from the falling slope of the pulse to the time where it reaches 3 mA reverse bias given an estimate.
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