29MHz trans Atlantic DX...

[M0DTS]

That's great Mike.
The fading is quite brutal to the signal but at the right moment it decodes well.
I will try a bit more this week to get a gnuradio DVB-T script to work at regular SR's, then maybe we can tease it down in SR to 20KHz...

Rob

[G3YKI]

Rob,
I copied you on your local WebSDR yesterday, but I could not get SDRangel to make anything of the recording. However, I could only get the kiwiSDR to give me 12kHz bandwidth which is not enough. (It looks as if Mike was getting 20kHz which was the figure you mentioned earlier.)
Bandwidth probably would probably stop it working, or maybe something else which I have overlooked. Anyway, a report of failure but at least you know someone else is following your work with interest!
Ken

[g0mjw]

You need to pull out the bandwidth in the filter by dragging the edges and also you select record on the web page and it will download a Wav file.

Mike

[G3YKI]

Yes, thanks Mike, I got that far, but having looked at a few of the SDRs now, I think some go to 20.25k but some seem to restrict BW to 12k.
Ken.

[M0DTS]

Nice to know others are interested Ken

Yes, unfortunately most only go to 12KHz of bandwidth which is a shame.
I just got lucky with the K3FEF kiwisdr which has good 10m sensitivity.

EW/KO33SV kiwisdr has 20KHz too but I've not got to that one yet.
I'm working afternoons this coming week so no chance to get to the states, but I may have a go mid mornings to the east if I get time.

Rob

[G4ZCN]

Gents I have been following progress on 29MHz with interest, though not got as far as decoding any DATV signals.

Have set up some equipment for tx such as PD4/ Ham it Up/2W driver amp/50W main amp/dipole antenna. On Rx Ant/Ham It Up/Ryde rx.

I can confirm that the above Rx/Tx set up seem to be working fine on 10m. Also tried 6m with the same Tx/Rx but only 2W and that seems to be working okay too.

It is a bit Heath Robinson cobbled together compared to Mike and Rob's set up but seems to work.

[G4ZCN]

I should add that my 10m and 6m DATV signals are being decoded here, though not decoded anything from across the pond or elsewhere...yet.

[radiogareth]

As I briefly mentioned on the Thursday evening QO-100 net, I had a few spare PCBs for a rather neat little amplifier that does a great job on 10m (and the whole of HF). https://sites.google.com/site/rfpowerto ... xp-mrf-101
I logged requests for a PCB from Keith GU6EFB, Colin G4KLB, Nick G4IMO and Malcolm G0UHY.
I'm sure I had emails with delivery address from Keith and Nick, (Colin I already have yours) but I can't find either of them now....(no idea why....age??)
If you could send me a PM on here I'll action them.
You might consider buying one of these 'kits' as it provides two devices, a dev PCB, connectors and a bit of heatsinking for pretty much the same money as two devices. Limited stock. Dev kit: Digikey P/N 568-15353-ND link https://www.digikey.co.uk/en/products/d ... TBQkAXQF8g

I can't seem to find the big brother MRF300 Dev kit anymore which was also excellent value on a similar basis.

Gareth

[g0mjw]

The NXP Start kit is obsolete - that's why it is important to jump on the bandwagon early. The 100W device looks interesting but probably will not give 100W of DVB cleanly enough to use on air. I see the MRF300 is still shown as an active part, but there is sure to be a replacement on the way. The MHT1803A and MHT1803B might be useful and are cheaper too. It is designed for RF heating but looks incredibly similar to the MRF300. Suspiciously so as you need to sign up to see the data sheet...

Mike

[i2NDT]

not exactly cheap...but Class A:

https://www.vk-amps.com/products/a-10w- ... -54mhz-50v

10 Watts with a 300W device.

i2NDT Claudio