It is *quite bright*, sets fire to the shed door ... pulls 30 amps from the mains, watercooled. The usual lamp-pumped YAG laser with a ktp, so not a gas laser. This one is q switched to improve the ef

I have a small green laser [1] that can be pulsed by controlling the Q-switch, I would think tones of a few hundred hertz would be possible ... I've been trying to find a sensible use for it for years

Speaking of which ... there was a rather excellent article in DUBUS a while ago about some chaps resurrecting a 90's LED optical transceiver and adding JT65 or similar to it and getting phenomenal per

I do check the Mow Cop SDR from time to time, it has been remarkably barren of late ...

I chat with GM3YXM on 160m every morning (another LF regular), normally he is a couple of dB above the noise, today a good S9 +20 ... another regular in Portsmouth gave hime a similar report, everyone

At the other end of the spectrum, top band is unbelievably good at the moment .. never heard anything like it.

My point was that does however seem to be a good distribution of locations that produce good scores ... which would tend to imply that the scoring system is not that out of whack. CLA is hardly up a m

You say the bonus system skews the results in favour of central stations ... so tell me again why GR3SEK won the open section this month? The GD stations always do well etc . Without the squares bonus

>> The only way I’ll do anything from down here in IO70KC is to buy a campervan in 2022 and head for Dartmoor. Nah, you'll just get run off by people telling you they used it 6 months ago so it is "th

GB3MHZ was inaudible ... as usual. I can sometimes hear the Dunstable beacon if conditions are good, and USK if it is on, but nothing at the moment. That said, I am in a bowl and the mast is down at a

To be fair, conditions were atrocious. Stewart LGS is normally 20+ over 9 with me and almost line of sight ... I struggled to hear him, and when I did it was weak and washy with lots of phase noise ..

Some alloys are better than others, the 4mm rod I use appears to have an anodised layer and I have not noticed any decradation. I recently dug (literally) a 6m beam out from under the compost where it

I'm still trying to find where in the rules it says that the contact time has to be recorded in the submitted log ;)

Under UK and EU consumer law, the product has to be fit for purpose, and the responsibility is with the seller and the seller alone. If the antenna came with some warning about "not for outdoor use" o

Great Britain is an island, and not a very big one, almost all the island can be considered a salt environment. The seller would have had the buyer address and should have made sure the product suppli

Just as a side note: DO NOT put up with any waffle from the seller about "please contact the manufacturer" ... the responsibility rests solely and firmly with the shop, as does your claim for repair/r

You can also ask in this group: https://groups.io/g/HP-Agilent-Keysight-equipment/ Very helpful people.

I enjoy getting the paper copy ... there is something "different" about having it in tangible form. PDF is nice but people will tend to share them, which kills the revenue and eventually, kills the ma

That's a good site! They appear to do plugs for .250 semi rigid as well ... very useful!

Ah, sorry N plug ... Farnell do one, but it is £26 ...