Hi QRP Labbers Welcome! Groups.io admin has migrated the YahooGroup membership, archives, files etc to the new group. I will disable posts to the old YahooGroup. Hopefully Groups.io will be easier for

Hi Alan My understanding (could be wrong) is that you can post without a Groups.io account, as long as your email address is an approved member of the group. But yes for the files, you'd need an accou

Hi Joe Good suggestion, thanks - I have changed it. 73 Hans G0UPL http://qrp-labs.com

Randy, all The standard WSPR software can decode drift from -4Hz to +4Hz. It assumes a linear straight line drift over 2 minutes. I'm not sure what Red Pitaya does. I think if the few decodes that occ

Hi Bruce Most GPS receivers won't lock at all in the basement :-) The patch antenna on the QLG1 is made very sensitive by the large PCB groundplane under it. But it is still the case that the lock tim

Hi Alan I have put all posts on Yahoo groups on moderation. From now on no new posts will arrive at the old YahooGroup. If I see a post come through there I will email the sender and inform them that

Hi Cecil I already did that today. YahooGroups still accepts messages but all are moderated and come to me for approval. I won't approve, but I'll know they were attempted. So I'll be able to email th

Hi John I will check that. The feature is not supposed to be absent in v3.11! 73 Hans G0UPL http://qrp-labs.com

Sounds like a great project, Martin And I'm glad you like the enclosure kit. I don't have any recommendations on batteries. But just wanted to mention that in v3.12 firmware (coming soon) there is a b

Hi Frank Yes, that was requested already and is on the list. I didn't have time or space to put it in yet. I'm still thinking about how to make space for the sunrise/sunset calculation etc. 73 Hans G0

Hi Kelly Yes, that's why I am still thinking about the best way forward. Some people think that it is better to transmit on all bands even when you know propagation is unlikely. Others want to have th

Hi Frank Thanks, but I don't have any issue with the mathematics of the astronomy calculation involved. The issue is more on the U3S implementation (integration with currently existing features, and t

Hi Kelly The cheap RTL SDR dongles work but they are not a high performance receiver. Dynamic range and IP3 are very important parameters. The lack of band pass filtering in front of the receiver cont

Hi Kelly Everything's a tradeoff! I think it would be quite possible to have a multi-band receiver, wiring an additional relay-switched filter board in parallel with the existing one used for Low Pass

Hi Leon Do you mean the supplied standard 27MHz crystal (not TCXO that you wrote)? Micha, Please also check app note AN001 http://qrp-labs.com/appnotes if you have not seen it. It discusses drift and

H Rick Straightforward parallel connection is fine. All the QRP Labs kits just listen to the GPS, they don't talk back. It's one way. Parallel connection works fine (within reason of course). 73 Hans

Thank YOU for your support 'Labbers, and for all the fun we've had together. Long may it continue! Merry Christmas to you all! 73 Hans G0UPL http://qrp-labs.com

Hi Steve Are you referring to the Si5351A Synth used with the Ultimate3S kit, or the VFO kit? Or otherwise? 73 Hans G0UPL http://qrp-labs.com

Hi Patrick I always use FSKCW with FSK 0, and any message. The "CW Dit" etc error is because you did not enter the FSKCW dit length. I usually use 100 second dits for testing. To avoid any glitch happ

Hi Steve There's a configuration screen with top row "XW x2 Tn Iv TxS" and default values "0 0 0 0 02". This setting is described on page 8 of the v3.11 firwmare operating manual. If you set the Iv pa