开云体育

Many thanks.

Thanks a lot to everyone for your helpful tips. I've now removed the two SMPS boards and measured on the mainboard. The resistance between PWR_HOLD and GND is only 250 ohms. Between VDD and GND, it's

Hi There was a change in 1_01_003 <https://qrp-labs.com/images/qmx/ssb/firmware/1_01_003.zip> which prevented accidental VOX activation when pressing any buttons, by activating a timer that ignored

Bonjour Benjamin, Je me permets ce lien qui donne des explications assez claires et simples sur les paramètres de propag Au plaisir 73 -- Jean-Jacques - F5IJO FISTS#17008 LICW#5902

GM Ed, a Little off topic but could you point me some document about solar conditions on how to interpret this : Conditions were OK. SSN = 108, SFI = 156, A = 14, K = 5. Many Thanks 73, Ben ON5BGO

Please add me too.

I found that if I turn off the SWR Protection, it will report power in the diagnostics menu.? I then get the following values (into a 50 Ohm dummy load): Band (m) Reported W 160 5.1 80 2.5 60 9.9 40

I agree. Never use those dinky 50 ohm calibration references as a transmitter dummy load. Unless your transmitter is sending out a max of a tenth Watt or so. Hans has a nice 20W dummy load for

Search for "DIY Shell kit for XYH3606 DC buck boost converter". There's a ton of them out there. Ron K0IDT

And the bad transistors were labelled BS170.? It's probably my fault for going for the option with the quickest delivery on Amazon.

The diagnostic screen is still consistently reporting 0.0W for every band when I press T, hence my turning to the Oscilloscope to get measurements.

It is also poor lab practice to use precision calibration kit standards as adapters or dummy loads.? They are precision instruments and should be given requisite care. 10 watt 30dB attenuators are

Has anyone found a custom case for this buck/boost converter please? (Or models with the same

Richard, I'm glad you found the BS170 problem.? They probably sent you the wrong type of transistor, since all BS170s in those type of packages have the same pinout. I think the peak-to-peak voltage

Nothing beats TWO irons, one in each hand, for removing such components.? Touch each end and lift it off. I have been evaluating two of the Pinecil irons (with the shorter tips) and am pretty

Thanks for the correction, Jerry.? I mis-spoke regarding the voltages at Q508, and it does appear to be operating correctly.

ON a hunch, I ordered a new batch of BS170s from a different supplier.? It looks like I got a bad batch for my last replacements.? Testing a couple of the ones I hadn't used, it looks like the

Debugging can indeed be discouraging, but please don't give up.? We'll continue to help. If you limit your current to 250-300mA, it can't burn up the BS170s - it also won't give full power out, but

Lifting one end is a good way to lift the opposite pad. I would suggest making a tool consisting of a "U" shape of heavy-ish solid wire whose legs would closely straddle the diode contacts, tinned at

Jamie, hope all is well following your surgery!? In summary, I removed C17 and inserted a wire into the now empty PCB hole connected to R6.? That wire runs to the ring terminal of an 1/8" TRS jack