Hi all, The Taitien TXETBLSANF-27.000000 worked much better than the Fox 924B I had been using for 2m WSPR TX and decodes. I'm not completely sure that it's the TCXO that made the difference though,

Hi Guys, One option is Beeswax. This has been recommended by Rev George Dobbs as the best way to secure coil windings. It’s environmentally good, non toxic and easily available from hardware stores

Roger, That's all you need. I was going to suggest you tried a core with a mix more suited to lower frequencies but it can be a problem getting the bandwidth. Have you dug deeply into Sound

Hi Richard Thanks for the comments. I will check, but I think most of these are already incorporated in the latest manual version. Your 1.08 document is quite old! 73 Hans G0UPL http://qrp-labs.com

Great instructions - with a couple of suggestions (based on Version 1.08) Drawing by WA4MZS for T1 is very helpful Would nice to know the approximate length of wire needed for each toroid

Hi Curt. Yes the the band noise does increase when antenna connected. I cannot operate without Polyphase board because my laptop only has mono soundcard so cannot use I Q "mode". Thanks for your

Roger Much could be going on here. First note that atmospheric and man made noise can he much higher down there. Likely you have enough gain to hear band noise, does the noise level increase when you

Hi all, I am building a multiband WSPR receiver using this module and Polyphase board. It is working well on 3.5,7,10 and 14 mhz. However I am finding the sensitivity lacking on 474.2 khz. I was

Garry: Good to know. Most of the time I just peel away enough to remount the toroid. Jack, W8TEE

Dear QRPLabs members, Today is the 7th of December. We have just 22 days left until the WORLDWIDE QRSS CELEBRATION from 0000Z December 31st, 2018 until 2400Z January 1st, 2019. There are a

Jack, It is much easier to remove hot glue using 70-90% Isopropyl Alcohol. Put a little alcohol on the glue, let it sit for a bit and it comes off without leaving a trace. Garry / WD0DUD

Thanks for the info and pointer to your notes, Alan ... much appreciated. Best - Bruce K1FFX

I kinda like hot glue for things like holding toroids in place. The reason is because, if I need to change it, at least I can reheat the glue with my hot air (rework) gun and soften the glue up to the

I used super glue to stop T1 springing apart . I would have been in real trouble if I had needed to remove turns from T1! One thread recommended making making T1 the first item to be soldered to the

Bruce, There is no recommended, as you say the one mentioned, the FOX, is a jumper. Some use it on HF with no apparent problems although my obsevations suggest that under poor propagation spots

Mouser list a switch 629-GPB023B05BR which looks like it will fit the same diameter hole. Probably much better quality I would think. Brian VE7JKZ

I used thin strips of masking tape to keep coil neat. One possible for those having issues getting the TI wires in the correct holes would be a thin piece of mica about 1" x 1" with the proper hole

First send appeared here OK .

Hans, Had a crystal oscillator issue a few years ago that cause a lot of head scratching. We had been producing said module for several years with no problems, when suddenly we had a rash of dead

What I did on my T1 was to leave the tails end of all the wires at different lengths, going from longer to shorter in a clockwise direction. That way I was able to insert one or two wires at a time,