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Well spotted Andy, tis indeed a coffee jar lid :) Good luck with your "picnic special" Philip G4JVF

Hello again Eddie This might be a bit more useful! http://www.ko4bb.com/Test_Equipment/Thunderbolt/PulseStretching/ And very simple to try. 73 Robert

Thanks Robert interesting stuff. I am sure Hans will crack it, if all else fails a special v2.01 GPS parameters with v2.02 RF will be the final solution, because the Trimble was fine on v2.01. 73

Dave, I have another U2 here which I am also planning to use as a "picnic portable" unit too ;-) My current thoughts are that I am going to build the second UP501 module that I have into the same

Hello Eddie Have a look at the circuit around the 1PPS for the PPS Piggie board here: https://www.tindie.com/products/gxti/pps-piggy/ Scroll down towards bottom of page. Maybe give some

Hi all, Happy to report that I built my U2 kit last week (aside from fully mounting the display in the box, it is complete). You can see my build

Hi Guys, Just in case anyone gets confused, there is no such thing as a Reyax UP501 GPS module! Reyax are simply one of several Far Eastern sellers on ebay. The GPS module being talked about was

Nice one Hans and all understood. Good thinking ! 73 de Andy

Hi Andy On key-up, the keying transistor Q1 is switched off, and the C1 capacitor is also supposed to mop up any RF leakage too. However some RF *still* can leak through to the antenna! It's many

Hi David That is why I liked the Trimble, integrated antenna, and also an auto switched SMA antenna socket for use with an external (waterproof antenna). Otherwise you could use a separate

I suppose there is only one way to find out. Plonk an LED On the output via a 2k2 and see what happens ;-) On my UP501 module I intended to have an LED connected all the time but it loaded it

Not quite sure I understand that one Hans. Do we Hell users have to apply for an NoV ? ;-) 73 de Andy

All Please note, U2 kits are still pending arrival of components here. So if you make an order which includes a U2, I hope it is Ok for you to wait for it all to be shipped together. 73 Hans G0UPL

Eddie, Now you've done it! Two showers and a train journey and Hans will have worked it out. 73 Keith, G6NHU

I second FTD,s remarks on the reyax UP501 modules... Faultless.. Plug n play ;-) de Dean G7EOB andyfoad@...> wrote:

I tried a pulse-stretcher using a 555 [found on the net, not my design] with both a Trimble unit and a Sure development board. Neither of them had any success ;-( OTOH, the 555 isn't the best chip to

It's worked 100% on ALL versions, including all versions so far on the U1 and the U2. It just works.... 73 de Andy

Hi Eddie, Andy Thanks for the thoughts on this. This is the next challenge - to make the GPS Interface work with both very short, and very long pulses. I don't know if I mentioned it before, But I

Hi Eddie No, I didn't put it into the spare bytes! I removed the Hell modes from v2.02k to make space. Hell takes a lot of space in the memory because it's a huge look-up table for all the character

Andy Did the Rayax work on v2.01 The 1pps pulse width does seem to be tied up with the claimed accuracy for for timing / frequency purposes. Hans obviously knows how to handle long and short