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Hi Martin That would work. You would only get about 25dB unwanted sideband cancellation at 1500Hz but for WSPR that should be fine. In the beacon mode, the receiver is active in between TX periods.

I would have to dust off my licence or dl a new version it's been so long. ?Just a question for UK users as without checking I wasn't sure of the current situation. ? For me with a full UK licence

Thanks Hans, Ah yes, I was thinking of the bandwidth of the CW filter - not the center frequency! But a simple add on bypass switch could possibly be used to link out the filter when receiving WSPR...

Are you in the UK ? If so, and you read the License Terms you will see it depends on which License you hold and which band you TX on if I recall correctly. But no flying to the Bahamas for a three

Additionally, how many are running unattended in the UK ? CB was legalised in the UK when it was mainly because of the persistent demands of the continuing illegal operators despite prosecution (OK

I switch my U3s off if I am not at home. ?What's the position on unattended operation? It can run a couple days if I am around at home.

2 years easily. I have 2 x U2's and a U3 DDS. Only time they have been off is for the odd firmware upgrade, otherwise they sit their running 24/7 with GPS calibration. In fact I thought about this

I have a number of ultimate 3s WSPR beacons up and running. I recently had an overvoltage issue with one of them which has damaged the OCXO, most likely the oven transistors as far as I can see. This

Tips highly appreciated - I may need them.? Perhaps also this thing uses more current than I think?? I can't find documented the current of the 3S nor the GPS.? Also i realize it varies with PA

I just bought one of these for $30 off eBay for $30 and I should receive it Thursday (my new oscilloscope arrived about an hour ago and I'm sitting here blankly wondering what possible purpose it's

Good evening Alan (and all), I have to admit that I couldn't see the forest for the trees in your query. As to these simple LC meters suitability to assist in assembling Hans' kits I would have to say

Yep, I had the exact same problem. Better filtering on the power supply fixed it . The cap filtering suggested in the previous post fixed it, I used electrolytics

Chris Wilson 22 August 2017 Just curious as to how long people have had a U3S or other U series powered up none stop for, and how the reliability has been. I leave mine powered up 24 hours a day,

Alan, Well put. One of the reasons I like this list so much is that Hans rules with a loose grip. As long as the discussions don't get out of hand then general chatter is easily tolerated. Besides, I

Hi all, I checked the Tayda website where I purchased some serviceable die cast aluminum boxes previously: They have one die cast Al model that would be a tight fit but might work: 120mm x 94 mm x 33

Hi Martin The receiver has a 700Hz CW filter. WSPR decoders work at 1500Hz. So it is not directly compatible... You could pull off the signal BEFORE the CW filter and use that. The audio phase shift

Hi Hans, Im hoping this isnt too stupid a question! The idea of the WSPR beacon mode is great, especially for us SOTA ops. Would I be right in thinking that outside of the WSPR Tx period, the receiver

Hans, Congratulations on your opening day! Looking forward to getting the kit on the air. Dave VE7HR/VE7PKE wrote: -- 72 de Dave VE7HR

Hi all There were 320 available kits yesterday at 0900Z and a little over a day later, all are sold out! (320 was the remainder of the 500 first batch, after 90 used by the YOTA 2017 buildathon, and

Hi Kevin, Bill, all The response to this kit launch was phenomenal. All remaining 320 kits have sold out in a little over 24 hours since launch yesterday. I will start manufacturing a new batch of