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Curious. ?Is this the 5VDC regulator/PA heatsink change that has been on going for a while?

Evan, Yes I know that. I am not the one who asked the question! Raj

I haven't powered my sBit (#64) or installed the Pi, so I'll watch & see what others say. Gerry Sent by the Thunderbird

Great detective work. This is the hard work of finding every little nook and cranny of a design. Thank you for your work! Gordon Gibby KX4Z

And might I suggest an AM broadcast filter in the receive circuit. I put one in my ubitx v4 and it helped ALOT. Yes noise blanker and S meter would be nice

what board was bad ? My Sbitx # 0128 is deaf then can hear then goes crazy even on a dummy load

Hello Steve, that is the approach that a lot of us are using. by building it on boards one block at a time, it seems to make trouble shooting and testing of sections much easier. Good luck on your

I’m also gathering daylight radio parts. I’m minded to build as a set of modules each with their own PCB, partly because I’ve promised to learn KiCAD and this seems a good place to start. I’ve

I have not blown anything, YET ( fingers crossed ) I cleaned all the powder coat from the countersunk holes in the case to make sure all of the case was grounded including the Pi and screen. After

The PA blow out is happening due to the power amplifier going into self-oscillations when it goes from transmit back to receive. We think there is a fix for this that involves making a cut in the PCB

Raj, the relays do not have a diode across the coils. The I2C coil driver chip does. 73 Evan AC9TU

Hi Aaron As an alternative, try “mebrew” instead of pads or square, to create insulated islands on your blank pcb. * nibbled blank double sided pcb * 10MΩ SMD resistor * 2.2pF SMD capacitor *

I dont think these have a diode across the coil. Enclosed is a data sheet. Raj

Mark, It might be better to move to 4.915 MHz to avoid the WWV breakthrough. Almost any crystal in HC/49U will do. It is best to measure the motional parameters not required. - f

It’s one. Part of the confusion here is that Dr Lee had created a sensor that would just plug into the Raduino. So he is assuming that folks might have done that first before now needs to disable it

I'm gathering parts to build a Daylight Radio. What are the critical specs for the 5 MHz crystals? Capacitance, etc? How critical? Thanks & 73....?????? Mark???? AA7TA

In my development version you can drag the center of the display in the frequency area below the spectrum display. To try it: cd /home/pi git clone https://github.com/k3ng/sbitx-k3ng.git cd sbitx-k3ng

here’s a photo of the DISPLAY variable after I defined it. —keep in mind a week ago I used putty without any trouble and sbitx ran perfectly when started either by clicking on a sbitx icon, cmd

It might.? Worth a try. Allison ------------------ Please use the forum, offline and private will go to bit bucket.