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But after using it for a little while, the lack of “bling” just doesn’t seem to matter-it just works, it’s very easy to use, and takes up little space. It won’t impress your friends with a big colorful display or 20 knobs and 100 buttons. It isn’t a “pretty” radio like the big desktop models. One thing is certain, if you’re tied to the idea that a radio must be a rectangular box with a flat face, you won’t like the 7100-well, at least not at first. Many reviewers simply didn’t like the 45-degree control head, and the fact that it isn’t attachable. I carefully considered the reports of low SSB output, ticking noise, and failing touch-screens - early problems that were eventually fixed but last forever on the web. Prior to purchasing the 7100 (in November 2017) I spent several weeks reading the articles and user reviews on, qrz.com, and elsewhere. Plus, I got it on sale for $860, and it’s a LOT of radio at that price! Even though it took three months to get the Icom rebate. And though I’m not really into VHF/UHF, or D-Star, it’s there if my interests change. I just can’t sit up to a desk for long periods anymore. Why’d I get one, instead of the 7300? Well, I operate from bed nowadays, and I need that little remote head. The only thing it doesn’t have is a 1st IF mixer output for a panadapter-but it’s fairly easy to add one, and we will, in another article. It has an impressive list of standard features, like 0.5ppm TCXO reference oscillator, speech, SD card slot (to save/restore settings, record QSOs, etc.), three adjustable filter settings for each mode, an SSB DATA mode (for running all those computer soundcard digital modes), and, and, and… lots of other nifty stuff. With its remote head, touch-screen, IF DSP, all-band all-mode (even D-Star), and built-in USB computer interface, it’s, well, about 20 years beyond my old 706MkIIG. Home » Ham Radio » 2018 Projects » Icom IC-7100Īhhhhh, the li’l 7100… What can I say? I like it! It performs like big radio, but it’s small.
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#ICOM CI V COMMANDS HOW TO#
How to Become an Amateur Radio Operator.706: Computer Control and Soundcard Interface.Amateur Radio Frequency Allocations and Band Plans.Of course, I could go out and buy an interface, but I think any self-respecting ham should build something like this that is so simple. So, even if you use an opto, you won’t be isolated because the interface is supplying the voltage. I guess the problem is that the rig doesn’t supply any power since it’s only a two wire interface (signal and ground). I’d think that doing this with optoisolators would be ideal. It’s odd that I didn’t find any that use optoisolators. It’s a nice design, but I don’t think it will fit in a DB9 shell. Icom CI-V Interface Design by K4PWO.This design uses a MAX233 RS-232 interface IC and a 78L05 voltage regulator.It’s certainly much more complicated than the G3VGR circuit above. It also requires a couple of zener diodes. This circuit uses a MC145407 IC, which I’ve never heard of. Also, I would advise against using his construction technique, to wit, “Chop the unused pins off of the 74HC04 and glue it to one side of the DB-25 shell with super-glue…” This is NOT good amateur practice :). Do not try using a 7404 in place of the 74HC04. 801SCAN is actually a control program for the R7000, R7100 or R9000 receivers, but this page also has a circuit for a RS-232 to CI-V interface. This page contains links to a bunch of rig control programs and information, not solely for the IC-735. One thing I didn’t know–the IC-735 was the first rig to use this interface. It not only describes the physical interface, but the command set as well.
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This is an article written in 1986 describing the CI-V interface. This is a nice little circuit using a couple of 2N2222s, two diodes, and four resistors. The page on CI-V level converters has links to many different circuits, including a relatively complicated one using the MAX232 chip.
#ICOM CI V COMMANDS MANUAL#
This is a complete online manual to the interface and the software driving it. The last time I got the urge, I did a web search and came up with the following: The signal levels are TTL-level signals and it’s a two-wire interface. This isn’t as easy as it sounds as the Icom CI-V interface is not a standard RS-232 type interface. Every once in a while, I get the urge to build a computer interface for my IC-735.