Projects

S9-KITS

"To invent, you need a good imagination and a pile of junk." - Thomas A. Edison

"I'm half way there then..." - GW4GTE

[site home]
Click [here] for kit pricing and ordering info

Completed Projects

FAT5 A 50W+ Class E solid-state AM transmitter that you can lift with one hand! Companion transmitter to RAT5 receiver.

RAT5 A simple AM only receiver for 80m or 160m that does the job. Low cost, easy to build. Companion receiver to the FAT5 transmitter. As published in 'Signal', May 2010.
Many ask, so please note this is a receiver for AM only. Not SSB, not CW as it is based round an AM receiver chip.

CLARA Designer approved UK version of VK3BHR's excellent low cost L C Meter
with UK available parts.

Multi-Rock
A novel stabilised drive source for 80m/160m. Part of the FAT5 project. As published in 'Signal', October 2009.

Netometer I
A small battery powered device to indicate frequency error by means of LEDs in a centre-zero format. Aimed at users of vintage LF transmitters with maverick VFOs or maverick operators. As published in 'Signal' January 2008.

Netometer II
Netometer I update. Includes a centre-zero meter as well as LEDs for error display, and an improved input circuit. As published in 'Signal' February 2010.

PUWMA
PUlse Width Modulator Assembly. High efficiency modulator for solid state AM.
This will handle powers to 400W PEP. Full kit or PCBs only

TROPIC Beta units shipped Dec 2011. Full availability Jan 2012. A (T)ransmit (R)eceive (O)rganiser using a (PIC). Don't blow your receiver up - sequence your changeover properly!

Future Projects :

Multi-Rock II Jan 2012. In development. DDS based alternative to Multi-Rock I with lots more features. Incorporating pre-built DDS daughter board so no hard-to-solder smd worries! This should be a quick project as most of the software is already done. Expect Jan/Feb 2012. Initial batch will be 10 units. Reserve one now - contact us. Web page with more info soon.

DSP clipper DSP clipper running on dsPIC development board using method described by G3PLX.

Auto Remote ATU Most of the parts of this project have been bread-boarded, and the main ATU has been in use for two years. Offers auto-tune using low power DDS signal. This will be fully documented once I get round to finishing it! (Dec 2011 - Er, I've re-designed it ... again!)

Automatic modulation
meter Automatic level setting, with amplitude modulation display for average modulation as well as peak modulation. Design stage.

CIV-IQ
I first got this working in 2005 and it's high time the world knew about it.
If you own an Icom set, you'll want to own this as well. No, really ...

S9-KITS "To invent, you need a good imagination and a pile of junk." - Thomas A. Edison "I'm half way there then..." - GW4GTE
[site home] Click [here] for kit pricing and ordering info
	Completed Projects
	FAT5	A 50W+ Class E solid-state AM transmitter that you can lift with one hand! Companion transmitter to RAT5 receiver.
	RAT5	A simple AM only receiver for 80m or 160m that does the job. Low cost, easy to build. Companion receiver to the FAT5 transmitter. As published in 'Signal', May 2010. Many ask, so please note this is a receiver for AM only. Not SSB, not CW as it is based round an AM receiver chip.
	CLARA	Designer approved UK version of VK3BHR's excellent low cost L C Meter with UK available parts.
	Multi-Rock	A novel stabilised drive source for 80m/160m. Part of the FAT5 project. As published in 'Signal', October 2009.
	Netometer I	A small battery powered device to indicate frequency error by means of LEDs in a centre-zero format. Aimed at users of vintage LF transmitters with maverick VFOs or maverick operators. As published in 'Signal' January 2008.
	Netometer II	Netometer I update. Includes a centre-zero meter as well as LEDs for error display, and an improved input circuit. As published in 'Signal' February 2010.
	PUWMA	PUlse Width Modulator Assembly. High efficiency modulator for solid state AM. This will handle powers to 400W PEP. Full kit or PCBs only
	TROPIC	Beta units shipped Dec 2011. Full availability Jan 2012. A (T)ransmit (R)eceive (O)rganiser using a (PIC). Don't blow your receiver up - sequence your changeover properly!
	Future Projects :
	Multi-Rock II	Jan 2012. In development. DDS based alternative to Multi-Rock I with lots more features. Incorporating pre-built DDS daughter board so no hard-to-solder smd worries! This should be a quick project as most of the software is already done. Expect Jan/Feb 2012. Initial batch will be 10 units. Reserve one now - contact us. Web page with more info soon.
	DSP clipper	DSP clipper running on dsPIC development board using method described by G3PLX.
	Auto Remote ATU	Most of the parts of this project have been bread-boarded, and the main ATU has been in use for two years. Offers auto-tune using low power DDS signal. This will be fully documented once I get round to finishing it! (Dec 2011 - Er, I've re-designed it ... again!)
	*Automatic modulation* *meter*	Automatic level setting, with amplitude modulation display for average modulation as well as peak modulation. Design stage.
	*CIV-IQ*	I first got this working in 2005 and it's high time the world knew about it. If you own an Icom set, you'll want to own this as well. No, really ...