Страница 1: ...AMATEUR COMMUNICATIONS RECEIVER WAFAYETTE MODEL HA 350 PRESELCTOR aS BAND SELECTOR REC Stock No 99 2524WX wPOS Ate HIE HLS orc te te CAL RESET OFF x FUNCTION SSB1 CW t 78882 AF GAIN 8 ANL PHONES...
Страница 2: ...60 db down Better than 40 db Better than 40 db Ist IF Variable 3 5 4 1 Mc 2nd IF 455 Ke 1 watt max 500 and 8 ohms 1 100 Ke Calibrator Circuit 2 Automatic Noise Limiter 3 Automatic Volume Control V 1...
Страница 3: ...uning method employed permits high accuracy A single tuning dial calibrated in kilocycles is used to tune over all amateur bands For even greater accuracy the receiver incorporates a 100 Ke Crystal Ca...
Страница 4: ...velength long at the lowest frequency of operation and end fed as shown in Figure 1 Since the lowest frequency on this receiver is 3 5 Mec the correct length would be 468 Length ft 35 Me Approx 134 ft...
Страница 5: ...ft in the SEND position Pin 3 is connected to the AVC line in the re ceiver and may be used to supply AVC bias to external equipment when required Pin 4 is connected to the antenna terminal and may be...
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Страница 7: ...ignals using diode detection AVC is applied and the Automatic Noise Limiter may be em ployed if necessary SSB1 CW This position is used for CW opera tion and also for selection of one sideband during...
Страница 8: ...all fre quency bands shown in yellow use the scale with yellow numbering Figure 5 provides some examples of how the tuning dial is used in conjunction with the Band Selector You simply add the number...
Страница 9: ...dial see section Calibrating The Tuning Dial The 100 Ke crystal is not normally supplied with the receiver unless so ordered Lafayette Stock No for the 100 Ke crystal is 40 0901L AUXILIARY SOCKET AND...
Страница 10: ...the positions indicated in the chart for AM operation Tune to the desired frequency If you wish to check scale calibra tions follow the procedure outlined under Calibrating The Tuning Dial Always use...
Страница 11: ...has been designated with a symbol either e or Ww Each of the two sideband positions on the Function switch has been marked with one of these symbols For example if you are operating on a band designa...
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Страница 15: ...ING AND INPUT SIGNAL to REC No Signal RF Gain at Zero Adj at Zero reading on S Fig A rear of chassis Meter 455 Kce mod 30 at IFT2 Connect VITVM to AVC Fig 400 cps Connect S G IFT3 line pin 3 of Aux So...
Страница 16: ...low scale Set Prese lector at left side of 14 Mc mark 28 0 Mc 0 on white scale Set Prese lector at left side of 28 Mc mark Set dial to WWV mark TC2 Adjust for zero beat 500 on white scale CAL at rear...
