any russian , or foreign ships in the area .........?

Somewhat coincidentally after the recent thread here, I think a new radar has either started up around this area, or something has changed in propagation . Turned the 1296MHz transverter on the other

My thoughts would be to cut two circles from good quality ply and recess the lazy Susan into the ply so that the ply has a minimal gap (just enough to turn freely) then something as simple as a clip,

Thanks Chris ...you are a gent! A

Hello Adrian I've got a few FHX35s which might do the trick. I'll put a couple in the post tomorrow. Don't say that I don't support broadband!! 73 Chris

I operate a short range 10G link with a friend using a reversed lnb and Puck as the transmitter and Octagon as receive..has worked well for some time ..but the DRO fet has failed and I have run out of

No. What I described was an offset open, but I soon realized it would not work. The problem with all this proprietary stuff is you never really know what's going on. But I don't think the value of

Hi David, I was just about to ask if I had understood that you were just making an offset open circuit. A 6.5mm disc on the end of the line, with an end cap as the other plate, may

Hi Dave, How would an old air-spaced bee-hive trim cap go? Coaxial construction, centre pin (rotor) and outer pin (stator), overall length <25mm, plates < 12mm… can supply a few if needed but I’m

On Monday, 21 November 2016, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby@...> wrote:. Thinking about it more, 50 mm is going to a significant fraction of a wavelength at 1.8 GHz, where the

Hi Paul I would like to know the capacitance too. Someone told me the capacitance was a few pF, but I don't know for sure. The analyzer I have works from 1MHz to 1.8 GHz, so that's an 1800:1 ratio of

If you run separate RX and TX feeders, and feed the power to switch the relay and preamp up the RX cable, you don't really need to worry about the loss or power handling of the bias tees in

Hi Mark, Just to say l.have used 2 different DCW-15b sequencers on 1296 for years and they should work fine. 73 Alan GM0USI Sent from my Samsung device

One of the problems with practical ceramic capacitors is that the dielectric materials are often non-optimum for many of the purposes we'd use them for. Materials such as Y5V and X7R are fine for

Many years ago I invented a system for measuring the dielectric loss of polythene in short lengths of submarine cable. It depended on a stable very high Q system. The variable capacitor used as

I suppose one would need some sort of insulating spacer between the plates. :-) Paul G8AQA

Yes! when checking the cathode compartment of high power tube amps I clip on a capacitance meter and run around the caps with a soldering iron to heat them up. Caps at room temp seem fine but the odd

I'm running the development version of 1.7: http://physics.princeton.edu/pulsar/K1JT/wsjtx-1.7.0-devel-win32.exe There are linux and Mac versions also. Mark G0MGX

Thanks to all who have replied. 1st I will try and make one - I have ordered some suitable caps. 2nd I have found some used SSB DCW-15B sequencers - listed as 70cm but they may work at 23cm - they are

Some HP/Agilent/Keysight impedance analyzers can use a high Q capacitor during the calibration procedure. This is an optional addition to the short, open and 50 Ohm load which are are mandatory. My