modification

modification

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• K6MM 160m Antenna Modifications - After a storm damaged the antenna, W6AER replaced it with a pre-made capacitance hat from DX Engineering. Using hose clamps and conductive grease, he ensured durability. Experimenting with radials and a coil, he aimed for better performance and resilience.
  [ Hits: 46 | Votes: 0 | Rating: 0 ]

• The Infamous Attic Dipole - An attic wire antenna with several modifications during the time. Began as a simple coax fed doublet antenna, and upgraded to a multi-band hf fan dipole, till the G5RV all deployed in an attic.
  [ Hits: 102 | Votes: 0 | Rating: 0 ]

• Elecraft K2 Preselector Modification - Although most Preselectors are designed with an internal T/R relay, theoretically enabling direct insertion between the transceiver and the antenna, there is a problem when running CW, especially when running full QSK. The switching time of the internal relay is too slow to follow full QSK. The best way to avoid this problem altogether is to insert the Preselector directly into the transceiver’s RX antenna line, thus avoiding entirely the need to switch the Preselector in and out.
  [ Hits: 189 | Votes: 0 | Rating: 0 ]

• ICOM IC756 Fan Modification - ICOM IC756 PRO II III, PS125 Fan Modifications, install an external cooling fan on the ICOM IC756 PROIII to minimize the heat on the chassis, then will perform a fan modification on the ICOM PS125 power supply to minimize the fan noise.
  [ Hits: 115 | Votes: 1 | Rating: 10 ]

• IC706 MKIIg Cooling Fans Mod - With this simple modification,it will be possible to keep the internal cooling fan on,running at reduced speed,when in receive mode.
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• IC-706 mk2 Modifications - The 5 MHZ and MARS Mod, transmitter power max modification
  [ Hits: 105 | Votes: 0 | Rating: 0 ]

• ICOM IC 7300 mods - Modifications for the ICOM IC 7300 transceiver, MARS mod, antenna tuner coverage expansion, Mic Modification
  [ Hits: 666 | Votes: 3 | Rating: 7.67 ]
• Enhancing Icom IC-7300 RX Antenna - Despite the model limitations, such as a single TXRX antenna connector, the author shares a reversible modification involving a coax relay for enhanced functionality, demonstrating the transceiver's adaptability and customization potential.
  [ Hits: 188 | 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.
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• Retevis RT3 Tytera MD-380 Modifications - Collection of modifications for the Retevis RT3, a monoband handheld transceiver for DMR (digital voice) and analog FM. It is almost identical to the Tytera MD-380.
  [ Hits: 106 | Votes: 0 | Rating: 0 ]

• JRC NVA-88 Modification - Adding 2 RCA inputs, 1 high impedance filtered audio output RCA 3, 3 HIGH PASS filters, 3 LOW PAS filters to the JRC NVA88 Speaker
  [ Hits: 54 | Votes: 0 | Rating: 0 ]

• Yaesu FT-891 Go-Box for POTA - This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.
  [ Hits: 196 | Votes: 0 | Rating: 0 ]

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