Dear Pete, Chris, LF Group, ...>If you mix the 1500hz tone up to 500 kc/s conventionally don't you get +/- 1500hz tone as the product. i.e. upper and lower sideband? Yes... ...>Thus the reason I sugg
Hi Jim If you mix the 1500hz tone up to 500 kc/s conventionally don't you get +/- 1500hz tone as the product. i.e. upper and lower sideband? Even if a double sideband signal was acceptable on 500 it
Is there a fairly simple interface unit which will enable me to transmit WSPR signals using my home built MF TX ? My TX has a VCO / FSK facility but no audio inputs. I've had a search of the in
Also, although it doesn't appear to be linked to that web page, http://www.g4jnt.com/JT4_Bcn.zip Is a simpler piC code that generates JT4 messages and outputs the data to a pair of l;ogic lines
hello Chris, Jim, group, an alternative to a transverted would be a divider, let's say from 5MHz (from a HF tranceiver) to 500kHz. That would limit the hardware to some resistors an a single CMOS or
Dear Chris, LF Group, ...>My initial thoughts were that the PC is giving out a 1500 Hz tone + / - 5 Hz. This is used to generate USB signals from an SSB TX (?) I was hoping to mix these tones with a
Dear Chris, Andy, LF Group, What Andy suggests is fine for generating a WSPR signal, but receiving WSPR via the PIC might be a bit more difficult... But also at http://www.g4jnt.com/LFUpconv.pdf is A
Hi Jim Sorry I missed the that mail I guess. Quickly looking at the G4JNT pdf file the circuit is basically the same as the Softrock TX in essences. The reason I suggested Softrock is that it is a ki
If you want a stanadalone beacon then http://www.g4jnt.com/beacons.htm gives info on WSPR transmission, and includes PIC code for controlling an AD9852 DDS and transmitting a pre-stored WSPR mess
LF, Is there a fairly simple interface unit which will enable me to transmit WSPR signals using my home built MF TX ? My TX has a VCO / FSK facility but no audio inputs. I've had a search of the inte
