I have checked this and when a slot transmission ends all BPF select lines go high and remain high until the start of the next slot in the frame. Thanks for the thought. Phil G8IOA

Yes! Better than a smart watch, a QRP watch! 73 Alan G4ZFQ

When can we pre-order this new postage stamp QRP radio?

It feeds the backlight. And, indeed you would expect about that dissipation. Seems a lot but must be normal. 73 Alan G4ZFQ

Hi everyone. I find that R48 (270 ohms) on the readout display board is quite hot. With a 13.8v source, I measure 8.57v across the resistor. This is 0.27 watts dissipation. That is rather marginal for

I'll buy it. PayPal address?

I actually used this... https://toroids.info/ took me awhile to find it again. But it’s pretty handy. Just put in the # of turns and press calculate

On the paddle conversation, I purchased the DCP paddles from American Morse. It went great with my QCX build... > On Sep 11, 2020, at 5:03 PM, namerati@... wrote: > > On Fri, Sep 11, 2020

Just to be pedantic and I appreciate that English is not everyone's first language ( and this will result in a lot of comments to give me something to read now we are in a lockdown

Thanks Ronald, Actually after winding L1, 2 and 3 they measured about 10% high on my Peak LCR45 so I took a turn off, they were still over the nominal inductance. I will read Hans' troubleshooting

Hi Hans, As for the postage stamp sized "QCX Pico" that you just "announced" (I claim dibs on the first production unit!), I only have one word to say in regards to how to view such a tiny display:

I agree, especially as the Pico Paddles are no longer in production!

Edge mount would be quite alright, though the edge mount SMA connectors I have used were designed for slightly thinner microwave boards and did not fit standard FR4. I also notice that you managed to

Hans, we have no mountains in Florida but I would love to take one to the beach, Dave. N2SN

Hi Andy Get well soon OM, all my best wishes... There are no more QCXs here. Only QCX+. We have some assembled QCX+ (i think this is what you're asking) in the shop, see

KE9UW, give this chart a shot.. https://kitsandparts.com/xtoroids.html

There's not much point going to 0402. It has to be big enough to hold the LCD and have space for the controls below that. Or do something much more radical which would be an out-of-scope redesign. If

Hello group, well... not wanting to stay theoretical, I implemented the thoughts in the message above #43560 and cascaded the Low Pass Filters (LP) sitting on the filter switch board of the U3S with

...and because it was so much fun, I did almost the same for 40m. A bang of a band here, full qrm. But for this band, I lacked a BandPass from qrp-Labs and feeling no desperate need for one at the

Almost, but not quite small enough to fit in an Altoids tin... Have you considered 402 parts??? But, the hard part is getting the height thin enough....