My six dollar DDS board hasn't arrived yet, so this weekend I worked on the re-build of the 30 meter Direct Conversion/DSB transmitter that I built in Rome (originally for WSPR use). I was hoping to use this rig to make at least a few PSK-31 contacts. But I started seeing these strange looking sigs in the waterfall. I found out they are JT65 (JT for Joe Taylor). So I downloaded the program JT65-HF. I got the receiver going very quickly (it is a 40675 dual gate MOSFET followed by the audio amplifier out of Roger Hayward's Ugly Weekender RX). The transmitter is just a two diode singly balanced modulator followed by the RF chain from Peter Parker's Beach 40 Rig. QSOs seem imminent.
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Right click in the window Dial QRG khz and select your frequency.
ReplyDelete73 John KC0BMF
Glad to see you have the JT bug Bill.
ReplyDeleteI love this mode. Current record for me is Chicago -> South Africa with about 400mw using a random long wire tuned on 40meters. Incredible mode and I cannot wait to hear how you do with it!
W9PDS
You probably already know this mode requires accurate time. I run NTP on my Win7 machine, but used Dimension 4 on my XP. Also, we usually use JT65 with a computer controlled rig, so you'll be doing some manual operations. You want to check out JT-Alert. It is a super handy application that runs with JT65, and makes operating much more fun.
ReplyDeleteEnjoy; I hope to see you on the air!
73,
Steve
W1KF