Alberto, Wolf and others, I concur completely with what Wolf has said. Both Yaesu and Kenwood (and I suspect Icom too) have the rig switched to USB when using CW. No, it seems Icom designs use LSB fo
Gary, Markus and others, Oil jacket heaters are also fairly good dummy loads for LF. A 1200 watt 230 volt heater has a resistance that is a bit under 50 ohms, but there is some inductance, so simple
Rik and others, I understand that "resistance wire" has a fairly neutral temperature coefficient. Tungsten (light bulbs) do vary significantly with temperature, but not so with nichrome. 73, Bob ZL2C
Hi all, We are planning some LF DX activity from Quartz Hill on 4 and 5 March. Our main objective will be to attempt two-way contacts with VE7 and RU6, so most of our time is likely to be in "QSO mod
Dick PA0SE and others, I believe a good way to analyse why more current goes in the bottom of the coil than comes out the top is to resolve the current in to in-phase (I) and quadrature (Q) component
Hi all, The discussion has brought out some interesting points on what goes on in a practical loading coil. I would like to investigate (measure) some vector relationships of current and voltage on a
Bryan, Having a tapped coil is one way to feeding/matching to 50 ohms, and my experience (for 181 kHz) is that around 2 or 3 turns is about right. I now prefer feeding the coax inner to the cold end
Hi all, For the next two ZL nights (4 and 5 March) ZM2E (at Quartz Hill, near Wellington) will be trying for QSOs with VA7LF and RU6LA. There is about 7 hours 45 minutes of mutual dark path between Z
Bryan G3GVN, I do not know about Winlink, but no 'net access at Quartz Hill means we attempt any QSO entirely by radio. 73, Bob ZL2CA -- Original Message -- From: [email protected] captbrian T
Hi all, I've had a quick look through bulletins but I'm too tired (from being up for two nights in a row) to go through them in detail for those wanting to find out if they received any of the ZM2E t
Hi all, The attached graphic shows the best result for receiving RU6LA at Quartz Hill on 5 March. Capture time was about 15 minutes before ZL sunrise. We were requested via 40 metre liaison for ZM2E
Teo YU7AR, Bob and Mike, Thanks , tomorrow again AR..AR on 135.92125 Thanks. I'll be able to monitor for EU beacons for the foreseeable future. For information I've now got gear hooked up at home, bu
Laurie, I'm not sure about what day you mean, but I'm monitoring for the rest of the ZL night (its after midnight here, dawn will be our Sunday morning). 73, Bob ZL2CA -- Original Message -- From: la
Laurie G3AQC and others, Before ZL sunrise I received some elements near the declared frequency, see the attached graphic, 801.5 Hz corresponds to 135.9215 kHz. I can send the full Argo capture on re
Markus and others, Thanks for comments. For info, my sunrise was nominally 1838 UTC, so on my capture it is about 17 ticks from the right side. So my best sigs were just before sunrise, and went past
