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Download circuits useful for amateur or electronic hobby.

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Toroid core : FT, T & Balun Datasheet
Circuit diagram of 7 MHz SSB Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in the final.
SSB exciter Hits: 20
SSB Exciter by VU2ITI
RM 96 Hits: 23
RM 96, A Simple low cost SSB Trasceiver circuit for 40M.

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Newsflash

Counterfeit Product Alert

Buyers of Icom equipment should be aware of counterfeit product alert issued by ICOM Inc.

Counterfeit products have become a serious concern for Icom. Icom continues to fight against counterfeits. Counterfeit products are hurting not only Icom’s business, but also authorized dealers’ and distributors’, and above all, users are the number one victim. Counterfeit products are often sold at very low price, but of inferior quality and performance.

Using fake transceivers, battery packs and chargers may even cause safety problems including the risk of fire hazards.