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Aerial-51 ALT-512 User Manual

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PART-1: INTRODUCTION
Aerial-51 ALT-512
(Preliminary)
User Manual
Ver. 1.0a
1.1
16-MAY-2019
ALT- 512 (Preliminary) User Manual Ver. 1.0a

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Summary of Contents for Aerial-51 ALT-512

  • Page 1 PART-1: INTRODUCTION Aerial-51 ALT-512 (Preliminary) User Manual Ver. 1.0a 16-MAY-2019 ALT- 512 (Preliminary) User Manual Ver. 1.0a...

  • Page 2: Table Of Contents

    PART-1: INTRODUCTION CONTENT PART 1: INTRODUCTION ..... . . 1.3 PART 2: PANELS AND CONTROLS ....2.1 PART 3: BUTTON OPERATION .

  • Page 3: Part 1: Introduction

    PART-1: INTRODUCTION IMPORTANT MESSAGE OPERATING an amateur radio transmitter requires a license in every country of the world! Using the ALT-512 without a license is punishable by law in every country of the world! INTRODUCTION bar graph. It has a PTT jack with...

  • Page 4: Technical Data

    PART-1: INTRODUCTION TECHNICAL DATA GENERAL INFORMATION Technology Direct Digital Conversion Transceive: • 160, 80, 60, 40, 30, 20, 17, 15, 12, 10, 6 , 4m Receive-Only: High-Performance • 100 to 1800 kHz HF Ham Bands: • 27.000 to 28.000 MHz 1.8 MHz to 70.50 MHz •...
  • Page 5 PART-1: INTRODUCTION TRANSMITTER 5 to 10 Watts - average, band- POWER dependent; front panel or Automatic SWR Protection software menu adjustment Selectable: Output Power, SWR, Display: either bar graph Metering on Transmit Mic Gain, ALC or digital (numeric) Metering DC voltage Numeric or Digital VOX SSB Adjustable Gain and Delay...
  • Page 6 PART-1: INTRODUCTION RECEIVER Technology Direct Digital Conversion (CPU digital delay 21ms) Sensitivity 0.2 Uv/13dB s/n Preamp ON Preamplifier +20 dB Attenuator -12 dB 160m, 80m, 60+40m, 30+20m, Preliminary 9 BPF and 8 LPF 17+15m, 12+10m, 6, 4m, Filtering + 100 to 1800kHz Consumption Average 350mA Toggles with[PAN] Button...
  • Page 7 PART-1: INTRODUCTION Accessories ALT-512 (In the box): DC power cable: red (+) and black This Manual (Preliminary V.1.0) (-) with built-in fuse and barrel CAT cable: standard USB2 cable connector (2.5mm x 5mm). with “type A” connector on both ends.

  • Page 8: Part 2: Panels And Controls

    PART-2: PANELS AND CONTROLS OVERVIEW FRONT PANEL CONTROLS NOTE: (4) [UP] • ‘Push’ = momentary push. • Normal Operation: Push to • ‘Long-Push’ = 1 second or change band to next higher longer band. • In Menu Mode: Used to step (1) [VFO] through the sub-menus.
  • Page 9 PART-2: PANELS AND CONTROLS OVERVIEW (6) [MEM]/[TUN]: (Tune) (11) [VDE]/[SQ]: • [MEM]: Push activates memory [VDE]: FINE (GAIN); operations. Lon- Push activates the VOX GAIN adjustment menu. • [TUN]: Long-Push generates a reduced-power signal for the [SQ]: Squelch: 2 adjustable purpose of tuning an external modes: ‘FM’...
  • Page 10 PART-2: PANELS AND CONTROLS OVERVIEW (18) [NF]/[PITCH] (15) [AGC]/[POW]/[IF] • [NF]: Notch Filter (SSB Mode • [AGC]: Long-Push activates Only); the AGC time-constant adjustment. o In RX Mode: Push to toggle Notch Filter ON or • [POW]: (Power) When in transmit mode (PTT keyed) OFF.
  • Page 11 PART-2: PANELS AND CONTROLS OVERVIEW DISPLAY TFT 2.4 INCH color display with 66,000 colors. In the picture below, all possible RX functions are shown active for the purpose of explanation. You will not see all features active at once during normal operation.
  • Page 12 PART-2: PANELS AND CONTROLS OVERVIEW Left Side Panel PHONE : The ALT-512 can operate with a HEAD The ALT-512 can be straight key or paddle. The connection used with any stereo headphones is via a 3.5 mm stereo phone-jack – as...
  • Page 13 PART-2: PANELS AND CONTROLS OVERVIEW Right Side Panel DC 12.6V : power source via standard coaxial (barrel) connector. SIZE: 2.5mm x 7mm. : BNC Female Jack; 50 Ohms (nominal) impedance. RCA Phono Jack; Open-Drain transistor switch, max. Delay: 50ms. Use to switch external linear amplifier’s T/R relay.

  • Page 14: Part 3: Button Operation

    PART-3: DETAILED BUTTON OPERATION DETAILED BUTTON DESCRIPTION This section of the manual goes into much more detail about the operation of each of the front panel buttons. ALL features adjustable here are also adjustable within the Software Menu. Details about the adjustments and settings within each feature are described in the “MENU”...
  • Page 15 PART-3: DETAILED BUTTON OPERATION [VFO]: TUNING / Multi-Functional Knob • During normal operation, the [VFO] knob is used for changing frequency. Clockwise (CW) rotation increases the frequency; Counter- Clockwise (CCW) rotation decreases the frequency. • When in MENU mode, [VFO] is used for changing/selecting values within some of the menu items.
  • Page 16 PART-3: DETAILED BUTTON OPERATION [TUN] (Tune): A Long-Push of [TUN] places the radio in transmit, generating a signal with about 1/3 of maximum power. Use this feature to tune an antenna tuner or check SWR. The signal can be either two-tone (SSB), or single-tone (carrier).
  • Page 17 The Panadapter, in Bandscope mode (here referred to as “PAN”) works in both RX and TX modes. The Waterfall (here referred to as “WTR”) only works in RX mode. To distinguish between them, the ALT-512 shows 3 modes: ‘TPAN’, ‘RPAN’, and ‘RWTR’. (T=TX; R=RX).
  • Page 18 PART-3: DETAILED BUTTON OPERATION • Bandscope: Scale = 3.0; Shift = 65 ; AVG = 100 • Waterfall: Scale = 3.0; Shift = 65; Speed = 4 [FILT]: (DSP) FILTERS Each mode has its own set of 4 DSP filters (FL-1, FL-2, FL-3, FL-4) available on RX.
  • Page 19 • IMPORTANT NOTE: The ALT-512 DSP filters have very steep skirt. If you set the bandwidth too narrow, your transmitted audio will sound clipped (because it is). Default for SSB is 2.8kHz. You might try setting it even wider if desirable.
  • Page 20 PART-3: DETAILED BUTTON OPERATION [MOD] (MODE) / [ VOX]: (lower BLUE button) Push [MOD] to sequence CW, CWR, DIGI, USB, LSB (optional: AM, FM). If AM & FM are desired, they can be activated in the software MENU Item #17. These must be set for each band you wish to use them on. The new sequence will then be: CW, CWR, DIGI, AM, FM, USB, LSB for all bands where AM/FM have been enabled.
  • Page 21 PART-3: DETAILED BUTTON OPERATION Lower Sideband (LSB): CONTINUED ON NEXT PAGE. 16-MAY-2019 ALT- 512 (Preliminary) User Manual Ver. 1.0a...
  • Page 22 PART-3: DETAILED BUTTON OPERATION Upper Sideband (USB): [NB]/{CMR}: Noise Blanker / Speech Compressor [NB] – Noise Blanker The Noise Blanker is activated with a Push of [NB]. A Long-Push of [NB] activates the adjustment menu. Adjust with [VFO] from 40 to 100. The preferred setting depends on the type of interfering noise.
  • Page 23 PART-3: DETAILED BUTTON OPERATION [STEP] / [FDE] / [LOCK] [STEP]: The STEP button changes the speed of changing frequency when you rotate the VFO knob. There are 5 steps to choose from. The size of each step varies, depending on the mode of operation, as shown below: VFO Speed: STEP SSB/DIGI...
  • Page 24 PART-3: DETAILED BUTTON OPERATION [PITCH] : CW Offset Frequency This feature controls the offset of the transmitting frequency from the received frequency. Thus, it defines the frequency (tone) at which the operator prefers to listen to the CW signal. Default is 720 Hz. •...
  • Page 25 PART-3: DETAILED BUTTON OPERATION [PRE] / [ATT] / [RFG] / {TX METR} IN RX MODE: Preamp / Attenuation / RF GAIN Preamp / Attenuation : This button controls the level of RF signal applied to the front-end of the receiver, by selecting either 20dB of Preamplification, 12dB of attenuation, or neither (OFF).
  • Page 26 If your radio is not operating properly and you have no idea what you have adjusted wrong, you can return all parameters to their default values with a RESET. -------------------------------------------------------------------- RESET PROCEDURE FOR ALT-512: • SWITCH THE RADIO • PUSH AND HOLD...

  • Page 27: Part 4: Operation

    PART-4: OPERATION ALT-512 OPERATION (In Preparation) Some Initial Comments to help you begin: IMPORTANT: The maximum supply voltage must not exceed 13.6 v.d.c. • Most power supplies provide 13.8v, so you should reduce voltage on your power supply. If you cannot do that, a diode capable of 5 amps should be inserted in the power lead (with the anode towards the supply) will work.

  • Page 28: Part 5: Menu Items

    PART-5: MENU ITEMS MENU ITEMS READ ME FIRST Note: Some menu items have only one adjustable parameter; other menu items have multiple adjustable sub-menus. • When you enter MENU Mode, the current value of the selected menu or sub-menu item is shown on the bottom line of the display. •...
  • Page 29 PART-5: MENU ITEMS #03 CW Pitch: Defines TX ‘Offset Frequency’ for CW Mode Adjustable with [VFO] from 400Hz to 1200Hz. (Default: 720Hz). When working CW, the transmitter’s frequency must be offset from the received frequency such that it is equal to the frequency of the tone at which the operator wishes to copy CW.
  • Page 30 NF only works on SSB and AM. It does not function on CW, DIGI or FM. The ALT-512 has two types of Notch Filter: Type-1 and Type-2. The Notch Filter is used for removing interfering carriers from the received frequency.
  • Page 31 PART-5: MENU ITEMS #14 SQL>: Two types of Squelch: ‘SSB/AM‘ / ‘FM’ These are independently adjustable. Select sub-menu with [FDE]. ‘SSB/AM’ also works DIGI modes. Adjust threshold from 0 to 100 with [VFO]. On a clear (unoccupied) frequency, adjust threshold level until the audio just barely shuts off .SQL.
  • Page 32 PART-5: MENU ITEMS #20 EQL>: RX / TX; There are separate 3-Band Equalizers for RX and TX. • Select RX or TX using [FDE] • Select Band (High Freq. / Low Freq. / Mid Freq.) with blue [MOD] o Adjust Equalization Level from 1 to 100; Default: 100. o Set to personal preference.
  • Page 33 PART-5: MENU ITEMS #27 TX Graph: TX Mode; select Panorama/Waterfall with [VFO]. Same function as pushing [PAN] on the front panel while transmitting. #28 TWTR: TX Waterfall Settings: Scale/Shift/Speed; Select sub-menu with blue [MOD]. Adjust values with [VFO]. • Scale: Adjustable from 0.1 to 5.0; Default: 3.0 •...
  • Page 34 PART-5: MENU ITEMS #33 TX Metr: SWR Num* / PWR Num* / SWR / PWR / ALC / MIC Selection defines what parameter (during TX Mode) to be displayed and the choice of display method. Normal display method is bar graph. *Num = Numeric display.
  • Page 35 RWTR . CW decoder NB Level RPAN . (reserved) Notch Fil TX Graph (reserved) The ALT-512 Concept and Design were created by LZ2TU, RA9YTJ, & LZ1JY MADE IN EUROPE Distributed by Appello-Funk GmbH Koenigsfoerderstr. 32 24214 Lindau/Kiel GERMANY www.appello-fun k.de 16-MAY-2019 ALT- 512 (Preliminary) User Manual Ver.