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Is new ICOM 7300 a SDR?

Mar 6th 2016, 11:25

hamwillyt

Joined: Nov 30th 2015, 19:06
Total Topics: 0
Total Posts: 0
I am a 62 y/o guy from Mass studying for my General Ticket and plan on purchasing a HF rig for DXing using SSB and CW (after I learn).

I'm looking to invest in a "not too complicated" rig and have read that the new Icom 7300 uses SDR technology and signal processing. It also has TFT touch screen tha provides complete operational status including a stunning real-time spectrum display with waterfall plus a useful audio scope display. I assume some non SDR radios have the same.

So my question is whether it's worth paying about 2X for this apparant "SDR Technology" in a rig without needing an external computer or invest in a non-SDR unit that costs less and may work just as well ?


Thanks,
Bill
KC1EWJ
Mar 7th 2016, 13:51

AA6E

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Bill -

Virtually all full-feature radios use digital signal processing these days, and much of their performance comes from the software (firmware). So you can call them "SDR" if you want.

The main feature of "SDR" from an operator's point of view is that you generally get a good spectrum display (panadaptor) of what's happening around your frequency (or maybe on the whole band). You get a good selection of filter bandwidths, modulation modes, noise reduction options, etc. And, being software, you can hope for future downloads to improve performance.

For "serious" performance levels, SDR / DSP methods are cheaper and easier to build than traditional analog. That's why DSP has taken over. In the Icom world, even the modest IC-718 uses DSP. The new (to Icom) feature in the '7300 is direct sampling. (Ingesting the whole HF spectrum with a fast sampler.)

All that being said, your most cost-effective choice for HF operation is surely a used older rig. I keep a Kenwood TS-520S around, just in case! It has almost no digital parts, so it's not too hard to maintain.

73 Martin AA6E
May 16th 2016, 01:47

WB9YTG

Joined: Dec 11th 2012, 14:57
Total Topics: 0
Total Posts: 0
I've had my IC-7300 several weeks and am throughly impressed.

Dec 3rd 2016, 00:43

WA2AXZ

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
I am looking for a new rig that can filter out the mountainous amount of noise I have here in Brooklyn. SDR may be the way to go though I haven't heard from anyone in a HIGH noise floor area commenting on how the 7300 does. IF anyone has had experience with this please e mail me 73's and Merry Christmas! Bob Loby-WA2AXZ wa2axz@arrl.net

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