Michael wrote: I suggest you are comparing Apples with Oranges. It is pointless to compare a poor SSB filter with a good AM filter. Basic Communications theory says that listening to one Sideband will

Sorry, but no it won't. The optimum bandwidth for SSB (2.4 KHz or so) and the ability to switch sidebands is about as good as it can get. Certainly it will be way ahead of any AM detector... .........

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

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

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 signa

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 f

ferrite61 wrote: processor/amp. Or does it actually have IF filtering? The next step in the evolution of radio technology involves "Direct Conversion" (or "Phasing") type receivers and transmitters. S

Greetings, The local hams are reporting amazing success with this antenna on LF and MF. I am in a quiet location with a long high wire and a good earth, but I have very poor results compared with the

What? I guess I didn't explain very well. What I meant by "Crystal Set" is to add a diode and a pair of sensitive headphones to a FSA and see what it can pick up compared with a single conventional lo

Hi folks, I've been following this Ferrite Sleeve Antenna saga with great interest. One test I would like to see is just how effective a FSA is when connected as a crystal set (but with no external an

Just a note: The circuit shown in fig 2B is incorrect. I think he meant the parallel circuit to be in series with the antenna lead, not in shunt configuration as shown. Like this http://www.qsl.net/vk

I imagine that Michael is referring to a simple parallel tuned circuit which is inserted in the antenna lead. see www.dxing.com/tnotes/tnote06.pdf if you google on "Wave Trap" you'll find lots of read

Hi Jerry, Yes, judging by the pix at http://www.mods.dk/picture.php?brandid=15&model=mfj-16010 the MFJ-16010 has coax connectors for both in and out. The earth wire should connect to the case. You cou

http://www.mfjenterprises.com/support.php?productid=MFJ-16010 The MFJ 16010 is configured as a low-pass filter, so it probably won't eliminate BC overload. Do you have a good earth ??? An ATU can't do

http://www.mfjenterprises.com/support.php?productid=MFJ-16010 The MFJ-16010 is configured as a low-pass filter, so it is probably not ideal for eliminating BC overload. Do you have a good earth ??? An

Antenna Jumper around the Radio instead of clipping it to the Aerial, then it wasn't so bad. - As Jay said, use the antenna input, that is what it is there for. Connection direct to the whip is far to

The simple solution is to wrap a few turns around the radio, with one end of the loop to the antena and the other to earth. To reduce sigs with a big outside antenna, move the loop away from the radio

Many of these little radios are intended to be used with relatively high impedance headphones (60 Ohm or so) Reduced bass can occur with low-Z phones due to the relatively small output capacitors. Try

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