There is a S in the model number, but no W. It is AM and FM only, and costs about $30. The "SONY ICF S 22 personal radio" Ebay#- 350479308550 I decided to order one anyway, but would still like

Op 29-07-11 09:45, Michael schreef: In fact, the iPhone is like a computer, but a small one. If a SDR software works on the iPhone, made in open source, it will work on other linux platforms, like

Thanks a lot for the replies Micheal and Paul S, you guys are certainly knowledegeable in this field. More Data Re the Longwire Trap: Michael, another thing I am noticing is that the first

You do realise that many of the newer communications receivers already have an I/Q output? And that commercial SDR frontends have been available for some years now? ......... Zim

------------------------------------ Where do you get this idea from? There is no reason why it can't use a ferrite rod or loop or whatever you wish.

Michael Where do you get this idea from? There is no reason why it can't use a ferrite rod or loop or whatever you wish. ........ Zim

I would maintain that this particular application is a gizmo - of interest to an informed and well-resourced aficionado. Without an effective external aerial, which would rather defeat the ideal

Paul, I have just read your two very useful postings. I will archive them as they are a very useful summary of values to work from. In an external loopstick, as in Garys and similar

Michael, I suggest you read up on SDR radios if you think this is just an interesting gimzo! .......... Zim

It's all explained very clearly on their web site. specifically: "iSDR does not require Internet connectivity, a cellular network, Bluetooth, or WiFi. What you will need in order to receive live

From the wording, it appears it doesnt need an internet connection. If it did, it would be a 3G radio - and very expensive listening. From the description given, it looks like an overkill

Jerry, I assume you are referring to your longwire setup. If so, the external coupling ferrite and parallel tuning capacitor will not be very critical. As long as it peaks the wanted

The other part of your question is quite difficult. One inductor generally does not do both AM-Band and the Beacon-Band *well*. There are compromises. This is due to the frequency range of both bands.

I have seen several ICF-22's on eBay for well over US$100. I haven't got one, but hear-say to me is its nothing to write home about. The SRF-39/49/59's are on par for AM-BCB... SW is rumored to be as

Does the app use a WiFi connection to an Internet site? Does the content come from the AM-band broadcast antenna of such a Radio Station? If it does both, where is the location of the Internet site

Since you already have a reasonable estimate of the inductance, the tuning capacitance is based upon that. For about 680 uH (0.681 mH) tuning to the bottom of the AM-band is 138 pF, with the top end

ferrite61 wrote: The next step in the evolution of radio technology involves "Direct Conversion" (or "Phasing") type receivers and transmitters. Single Signal Direct Conversion rigs have been around

I noticed the SONY ICF S22, which has a speaker, but looks to be about the size of a walkman. Anyone have one? Is it any good for DXing? Also, the ICF-304 looks interesting, but it could be too large

Hi Tony: I hope the SDR app is a good one, as it may get more people listening to the radio. It seems to also require an RF front end, which will make it rather more difficult to catch on,

iSDR is a software defined radio application compatible with the Apple iPhone®, iPod touch® and iPad™. iSDR is designed for experimenters, shortwave listeners, and amateur radio enthusiasts who