Transmission1

Hi all. I am going to set up WSPR in the new year and intend to use the Sota modual,as it comes almost ready to go, apart from setting it up with the PC (hope it supports a Mac) I also want to get the extra filters for 2 and 70, hopefully Sota can supply these as well. My only down side is the minimum my radio will do is 5 watts and it would have been nice to use milliwats just for the fun of it. Any one else using this system of WSPR and how did you get on. The antenna I intend to use is a 20-10 windom but it will tune up for 40.

73s Dave

I suggest you read the spec again. The WSPRlite kit from Sotabeams is a self contained HF transmitter...it doesn't need a separate TX. It also doesn't do 2 & 70.

To the best of my knowledge you will require Windows 7 upwards, neither Mac nor Linux are supported, but you just plug in to a PC once to configure it with your callsign etc, after that the unit is stand alone.

Thanks for the info, I did not read the spec properly, yes of course it is a stand alone unit. I was told that there are filters available for 2m I will give Sota a ring as I was interested in WSPR on that band. I'm choked that my Mac is not supported,just means if I go for it I will also have to buy a cheap windows laptop. I'm beginning to wonder if the cost of WSPR plus a laptop is worthwhile financially

You can get a laptop off the bay for this.
However you only need it the once, can you do that using another persons PC if your not a pc user?

Or install windows in a virtual machine...

The U3 is a good multi-option stand alone kit for WSPR, if you like building kits that is.
http://shop.qrp-labs.com/U3S

I have a U3 but prefer to use a HF radio/ PC combo for WSPR, I use the low RF out setting on the radio (5w) but by the time it's gone through the ATU and feeder it's more like 2w at the antenna and even lower if the audio output level is decreased.
As I'm not in a good location (height restriction on antennas) I've found that a milliwatt TX is more or less useless for me, especially if it's run via an ATU.

You might want to consider building a multiband fan dipole if you intend band hopping with mw & WSPR, you could tune/trim each dipole for the WSPR TX/RX frequency on the HF bands you desire.

Just 1 example of the multiband fan dipole http://www.hamuniverse.com/multidipole.html