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IC-718 modifications schematics and manuals

mods collected by mods.dk

Schematics, modifications and manuals for ICOM IC-746

IC 706 modifications collected by mods.dk

Modifications for Icom IC-2100H by mods.dk

ICOM IC-V8000 modifications, manuals and schematics

Experience and modifications of ICOM IC-751A

ICOM IC-706MKII out of band Xmit Modification

Mods for ICOM IC-706

Russian page on IC-718 modifications

List of mods for the ICOM IC-7000 with many PDF Files

IC-2720H modifications and links to manuals

IC‐2300 MARS/CAP mod expanded frequency range 136‐174 MHz

The Icom IC-7300 is a popular HF transceiver among amateur radio operators, known for its advanced features and performance. This modification guide focuses on enabling extended transmission capabilities, specifically for MARS and CAP frequencies. The instructions are based on the work of PA2DB and include detailed steps for removing specific diodes to unlock additional frequency ranges. Before proceeding with the modification, users are advised to take necessary precautions, such as ensuring the radio is powered off and using ESD protection. The guide emphasizes the importance of using appropriate soldering techniques and tools to avoid damaging sensitive components. A video demonstration is also provided to assist users visually in performing the mod. While this modification can enhance the functionality of the IC-7300, it is crucial to note that it may void the warranty and should be undertaken at the operator's own risk. The guide serves as a valuable resource for those looking to expand their operating capabilities with this versatile transceiver.

The Icom IC-746 is quite a popular HF/VHF multimode transceiver which has one shortcoming in its standard configuration when used to operate modes requiring good medium-term frequency stability.

This modification will allow the MkIIG to transmit on most of the frequencies that it receives on.

Mods.dk - modification for IC 2720H

cqham.ru russian only modification page

ZS6YI modifications for the Icom IC7000

Mods for Icom 756 Series including eSSB Mid-Fi Mods for Receiver and Transmitter

An illustrated modification for the Icom IC-R20 receiver to locate and use the unfiltered audio.

A collection of modifications for the Icom IC706 transceiver

Adding a 20m band pass filter for the Icom IC-706MkII(G) by ON7EQ

HM-36 Modification to make it work with an IC-7200 and the IC-7600

The Icom IC-7300 is a popular SDR transceiver known for its excellent performance in ham bands. However, users have reported issues with reception reliability outside these bands due to ADC aliasing. This phenomenon occurs when the sampling rate of the radio interacts with frequencies outside the intended range, leading to unwanted signals being received. For instance, when tuned between 30 to 36 MHz, users may inadvertently pick up WFM broadcast signals or PMR communications due to aliasing effects. This guide outlines modifications to improve the IC-7300's performance by addressing the low-pass filter design, which is crucial for reducing interference from these unwanted signals. The proposed modifications involve adjusting the low-pass filter on the PA unit to better attenuate frequencies that cause aliasing. Measurements indicate that the original filter design allows significant signal leakage, leading to false receptions. By implementing the suggested changes, users can achieve a notable reduction in unwanted signals, enhancing the overall functionality of the IC-7300. While the modification requires careful soldering, the benefits in performance make it a worthwhile endeavor for serious operators looking to optimize their SDR experience.

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.

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.

The ICOM IC-745 is a durable 1980s HF transceiver, ideal for enthusiasts who enjoy restoration. While lacking modern serial control, it supports digital modes with modifications like sound card connections and frequency stabilization. Enhancements like an RTL-SDR panadapter can also be added, making it a versatile and valuable radio for contemporary use.