ht 1000

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ht 1000

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DX Resources : Contest : Contest Rules
  • SMSS - Swedish Lakes - SMSS - Swedish Lakes. A Contest where you collect as many lakes as possible of over 100000 lakes.
    [ Hits: 167 | Votes: 0 | Rating: 0 ]
Manufacturers : SWR Meters
  • DJ9PK SWR Meters - This device was designed as an SWR and power meter for Radio Amateurs. In addition to SWR, it measures forward and backwards power, therefore can also be used as a wattmeter. With a large measuring range from 1 to 1000 watts, it is suitable for use from QRP to QRO
    [ Hits: 200 | Votes: 0 | Rating: 0 ]
Operating Modes : Digital Voice
  • SM1000 FreeDV Adaptor - The SM1000 allows you to run FreeDV without a PC. Connect the SM1000 to your SSB radio, and you now have Digital Voice (DV). You don’t have to buy a new radio to run Digital Voice! It’s based on a STM32F4 micro-controller, has a built in microphone, speaker amplifier, speaker, and transformer isolated interfaces to your radio.
    [ Hits: 124 | Votes: 0 | Rating: 0 ]
Operating Modes : Morse code : Learning Morse Code
  • Recognition of CW signs at different listening levels and frequencies - The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB. All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.
    [ Hits: 81 | Votes: 1 | Rating: 7 ]
Radio Equipment : HF Amplifiers : Acom 1000
  • Mod for Acom 1000 amplifier - The problem originates by improper TXOUT-to-RF timing (RF transmission exists still after a TX-EN prohibition), combined by too long decay of their CW pulses.
    [ Hits: 509 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Yaesu FT-1000MP
  • Yaesu Mark V FT 1000 MP - A page dedicated to Yaesu Mark V/FT-1000MP transceiver squarely aimed at the high performance contest and DX crowd.
    [ Hits: 350 | Votes: 0 | Rating: 0 ]
  • Yaesu FT-1000-D RS 232 CAT interface - Schematic diagram circuit to build a RS232 serial interface for the Yaesu FT 1000D, works also as CW Keyer control with Log-EQF software. May be used with other Yaesu HF Transceivers.
    [ Hits: 218 | Votes: 1 | Rating: 1 ]
  • Repair of an FT-1000 MP Mark V - Repair of a Yaesu FT-1000 MP Mark V probably struck by lightning.
    [ Hits: 50 | Votes: 1 | Rating: 10 ]
  • FT 1000MP MK V and Keyclicks - YaesuFT1000MK V stands out with improved close-spaced SSB transmit performance, reversing a trend seen in other modern radios. Featuring a class-A mode, it offers clean HV finals when kept out of ALC. However, two significant flaws persist: the noise blanker causes receiver IM distortion, and the transmitter lacks wave-shaping on CW, resulting in pronounced keyclicks. Preliminary tests reveal strong keyclicks +1kHz and -1kHz, prompting a combined modification to address both issues.
    [ Hits: 27 | Votes: 0 | Rating: 0 ]
Shopping and Services : Electronic Components
  • Allchips - Electronic Components Online Service Platform - Allchips is a professional electronic components online platform, supported by over 1000 original manufacturers & authorized agents, there are more than 10,000,000 parts on the platform, all of them are original and new guarantee.
    [ Hits: 169 | Votes: 0 | Rating: 0 ]
Software : Circuit Design
  • ZenitPCB - An excellent tool to create, design printed circuit boards in a simple and easy to learn way. ZenitPCB is free for personal and amateur use, limited to 1000 pins, that is more than enought for any amateur radio electronic project
    [ Hits: 141 | Votes: 1 | Rating: 8 ]
Technical Reference : Amplifiers : VHF Amplifiers

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