88 QST Jun88 A CHEAP AND EASY MODEM (3 BOARD SET) $23.00 OSCILLATORS, VFO, BFO, ... Price 73s Oct95 DDS DREAM DIGITAL VFO USING AD7006JP50 (IC MAIN AND SWITCH BDS) $17 ... FOR WELSH DDS VFO $7.50 73s Jun92 8K CH FOR FX-146 $4.50 73s Feb82 THE FUN ... LOOK AT BASIC OSCILLATORS (QST 2/84) $4.50 ARRL QRP CLASSICS TUNING DIODE ... VFO WITH BANDSPREAD AND BANDSET (QST 1/89) $4.50 CQ Jan97 TUNABLE BFO FOR 455 KHZ ... COLLINS FILTERS BY W1FB $5.50 CQ Jun91 W1FB VFO $4.50 ... HF VFO BY FRANCESCO MORGANTINI (5 BOARD SET) $24.00 QEX Jul97 DIRECT DIGITAL ... (MINI KIT) $79.00 INCLUDES P C BOARD, MC145170D2 IC, OP27GZ OPAMP, (2) 7805 ... REGULATORS, DISPLAY INTERFACE BOARD, 100 MHZ MINI CIRCUITS OSC, AND ... AND A VVC-TUNED 40M VFO $6.50 POWER SUPPLIES Publication Reference ...
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9 9 QEX Nov/Dec98 40V 8APOWERSUPPLY FOR MOSFET AMPLIFIERS. USES LM317 AND 5 ... , ECORE AND FERRITE FOR T1 AND P C BOARD) QST Dec98/Jan99 A 13.8V 40 AMP ... SWITCHING POWERSUPPLY BY MANFRED NORNHINWEG $20.50 QST Nov89 ... POWERSUPPLY DESIGN HINTS $6.00 QST Nov93 13.5V 5A. ... SPENCER POWERSUPPLY (BOARD AND MC3423P1 IC) (ARRL HB 95 FIG 11.37 ... ) $7.50 RADIO COMM. Apr96 40A POWERSUPPLY BY SPENCER $5.50 HIGH VOLTAGE DOUBLER ... PS USING TWO 6KV HV6-1 DIODES AND 8FILTER CAPS 6" X 6" $16.50 LARGE HI-V POWER ... SUPPLYBOARD WITH 10 FILTERCAPACITORS 11"X 5" $24.00 SMALL HI-V POWER ... SUPPLYBOARDUSING 6 FILTERCAPACITORS 4.5" X 5" $11.00 TRIODE BIAS SUPPLY ( ...
before ordering c35e.pdf 04.10.8 1 example of noise suppression in ... pcs improving the gnd on extension boards in case of installing an extension ... board with a cable noise may conduct to the ... radiation from the cable therefore the board s gnd must be stabilized by connecting ... impedance is low in addition emi filters are installed on the cable connector ... s metal case metal fitting gnd pattern board through hole extension board screwed to ... gnd on extension board installing emi filters on the clock lines high frequency clock ... be close to each other therefore an emi filter with high and steep attenuation is used ... currents is also generated on the powersupply line therefore a chip ferrite ... pass capacitor to suppress noise on the powersupply line chip ferrite bead ...
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before ordering c35e.pdf 04.10.8 2 example of noise suppression in ... large current flows into the gnd and powersupply line therefore it is necessary ... speeds and high noise levels a filter with high and steep attenuation is used ... 200mhz 2 lcd panel installing emi filters on interface cable ports on the lines ... frequency impedance between the emi filter s gnd and the metal plate chip ferrite ... chip emifilŪ nfm21cc102r1h3 1000pf pc board metal plate installing emi filters on ... the dc powersupply input since noise is radiated from the ... dc powersupply cable of the ac adapter some noise ... suppression is necessary at input to dc powersupply of personal computer the dc ... powersupply line contains both differential mode ...
post as receiving amp stage in the if filter makes this the best semi-qsk set ... during contests width crystal ladder filter fights unwanted easy to power it uses ... little power -qrm and noise to the maximum only 50 ... listening or calling off-frequency a pc boards in our plant rugged all-metal snap ... onto strong signals outside radio tuner power pack fasten together to choose your the ... cover snaps the receiver back at $384.80 buys a nov ice and techplus full gain ... great volume mfj-9040 covers mfj-4114 power rugged transmitter 7.000-7.150 mhz ... motorola power amplifier pack $79.95 mfj-9030 covers ... hand handles a full 150 watts covers 80-10 meters has tuner bypass switch tunes ... 6 watt range setting for qrp covers 1.8-30 mhz 4:1 toroid balun is built in for ... hall-of-famer k1bqt for real world low-power operating conditions buy all or choose ...
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radios are feature-packed tm the most powerful 12 watt radios you ll ever own hot ... on-air design real alalog s-meter powerful audio turn on your new mfj ssb ... trip the mfj transceiver microphone powersupply and antenna can easily fit into ... and a 2.3 95 95 khz crystal ladder filter 319.95 with 289.95 with all adventure ... -in low pass ship code b ship code b filter to help avoid tvi mfj-9406 for 6 meters ... ragchews rate shifts or stair-stepping powerful and you can take this little set one ... can combine with your from a 2 amp ac supply 3a for the other outdoors hobby for an ... for all adventure radios mhz with power output of 10 watts pep mfj adventure ... output um quality plate-through pc boards 144.0 to 144.3 mhz quality components ... you ll never have to lug around a heavy powersupply to run this radio rugged ...
-quiet FET post amp stage in the IF filter makes this the best CW receiver going ... : Tight CW bandwidth crystal ladder filter fights unwanted QRM and noise to the ... volume. Rugged Transmitter: Motorola power amplifier transistor delivers full QRP ... for full QSK during contests. Easy to Power: It uses little power -only 50 mA ... on G-10 double-sided plate-through PC boards in our plant. Rugged all-metal cabinet ... A Integrated CW Station Radio, tuner, power pack fasten together to form a tiny 6X6 ... .5X8.5-in. integrated CW station. $364.80 buys complete CW station. Includes CW ... .95; MFJ-971 tuner, $99.95; MFJ- 4114 power pack, $69.95; portable antenna, $39.95 ... ; MFJ- 9117B, 17M; MFJ-9115B, 15M. $399 80 if purchased separately. MFJ-27, $4.95 ... hall-of-famer K1BQT for real world low-power operating conditions. Buy all or choose ...
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yagi quadruples your effective radiated power over a half-wave dipole. 6 foot boom, 2 ... of DX in all directions even with low power. GroundIsolated TM radial system ... separately. MFJ-4110 Portable AC PowerSupply, $49.95, fits in your pocket and is a ... companion for radio-on-the go. 13.8 VDC output at 1.2 Amps. MFJ-4114 ... Rechargable AC PowerSupply, $69.95, with battry pack uses Ni-Cad D ... -selectable AC or batteries. Output 13.8VDC, 1.2A. Page 31. Turn on your new MFJ SSB ... trip the MFJ transceiver, microphone, powersupply, and antenna can easily fit into ... Selectivity: Eight poles of tight IF filtering cuts adjacent chatter and focuses ... transmitter power where you need it. Smooth VFO: No ... reductiondrive ball-bearing capacitor. Powerful audio: Big audio even in noisy ...
2cr-1 112 ribbon cable to digital i/o board ribbon cable rs485 1ts leaving cooler ... counter option 20 31 1sc 2sc 5 modem power outlet telephone line water temperature ... not furnished ribbon cable vo gnd ai board #2 2ts entering cooler water temp red ... shall be provided by installer 5 if powersupply has been interrupted for a ... must be wired between terminals 8 74 8if 0-5vdc cwr is used set setpoint 10b 9to ... desired at 5vdc input caution do not supply over 5.0vdc to 7ai 101res can be wired ... 63 choose system voltage wiring control power wiring 4l1 4l2 16fu 91 3t +5 ai board ... aib 4ai 60 filterboard fb o1 i1 54 55 8fu 5a 9fu 8384 1ai gnd red grn wht 65 5tb ... see note 9 set points 1 2 3 4 5 6 7 8 9 10 11 12 13 tlw temp lead ramp up amp ... 1900 ppm 0.2 unload unload 250 psig 80.0 60 psig 245 psig 2000 ppm 0.0 4l1 4l2 ...
