WSPR - 20m Success

Wow! After 24 hours continuous operation I'm amazed how well the prototype transmitter my son put together for me worked. Despite the output of 100mW it has been heard far and wide.

So a big thank you to Alex for soldering up a prototype and Georgia, my daughter, for helping me get a quarterwave groundplane  strung up in a gum tree.

The second really pleasing aspect is the synthesiser has exhibited no drift. Despite running in a shed with no lid and over 10 degrees of ambient temperature variation it has not suffered from frequency drift eg

Timestamp	Call	MHz	SNR	Drift	Grid	Pwr	Reporter	RGrid	km	az
2016-05-17 00:42	VK6TT	14.097069	-18	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:36	VK6TT	14.097069	-10	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:30	VK6TT	14.097069	-17	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:24	VK6TT	14.097070	-16	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:18	VK6TT	14.097071	-16	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:12	VK6TT	14.097072	-22	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:06	VK6TT	14.097073	-12	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-17 00:00	VK6TT	14.097074	-15	-1	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:54	VK6TT	14.097075	-16	1	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:48	VK6TT	14.097076	-20	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:42	VK6TT	14.097077	-12	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:36	VK6TT	14.097078	-14	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:30	VK6TT	14.097079	-13	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:24	VK6TT	14.097079	-9	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:18	VK6TT	14.097079	-18	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:12	VK6TT	14.097080	-26	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:06	VK6TT	14.097081	-22	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 23:00	VK6TT	14.097082	-17	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 22:54	VK6TT	14.097083	-19	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 22:48	VK6TT	14.097084	-21	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 22:42	VK6TT	14.097084	-19	0	OF78	0.1	VK7ZL	QE37pd	3104	123
2016-05-16 22:00	VK6TT	14.097082	-23	0	OF78	0.1	VK7ZL	QE37pd	3104	123

So I'm calling this a success. I've made a board for a final prototype and once that is completed to confirm there were no layout errors I will be ordering commercial boards for a kit  for those that wish to duplicate this.

Cheers
Richard VK6TT