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Jim Not all have this issue. I have QDX v1 built for 12V and running FW 1.04. The 5V regulator was chgd to 7805 When I run this closed case I detect some warming. ie: WSPR, 30M, 5.5W, SWR1.2:1 At the

Plenty of reasons for having more than on Pi. * Longevity of a project or service provided for hams to hams. * Failure of a unit. * Projects requiring services that require audio sharing that can't be

Apologies for the dupes. For some odd replies to existing thread where not getting through. - 73 de Andy -

Ignore. -- - 73 de Andy -

*If* I remember correctly from reading on the official Pi forum, that retailers / RPF are supposed also enforcing a 1 unit per address too. So maybe it's worth enrolling your friends / sisters (think

Probably the best WSPR appliance from QRP Labs is the U3S. It very modular in its approach. *The best part is it's VERY forgiving of load matching problems!* The Si5351 synth. module can fit the TCXO

The Secret Mistresses part has an unmistakable element of mortal peril, if in plural.................. Lee KX4TT

I know the comment was just a joke, but who needs to have right now more RaspPis purchased by family, sisters and secret mistresses. Don’t try to die with the most toys. Philip L. Graitcer St Simons

Hi Alan You never know. I compared the size of the T1 core to the size of the input transformer cores on a few old CB (11 meter) amps I have, which nominally take 5 watts. T1 is substantially smaller.

Jim, A couple. My impression is that this is not common, not many replied worrying about it. But perhaps your post will prompt more? 73 Alan G4ZFQ

I run a QCX on 40m. It was one of your early batches bought at the covention.? I never checked the drift, but I get? lots of spots. QCX modified after PA went US. I fitted zener diode, about 37V

Voltage drop rule of thumb(s): * Si: 0.6 to 0.7 * Schottky: 0.4V * Ge: 0.3 V * MOSFET: 0.3 V? For QRPLabs products, err on the conservative with a 1N540x (3A Si rectifier) or three in series with Vcc,

Just worked NN9X on 40m FT8 on the QDX, powered only by the smaller backup battery ( 8V, 3.2 aH ) ---? have a much larger battery on order for long-term power outages and such. This battery is a

Too lazy to look, what is the voltage drop on the polarity safety diode that comes with the QCX+?

Hi all A couple of recent posts suggested that T1 got really hot, and it was a contributor to a lot of the heat issues in the QDX. Is this true, or did I misread it? 73 Jim N6OTQ

I am standing in the shadow of giants in this venue, but always put on a dummy load and save yourself from self disgust and anger. Qrp guys sells a kit for a reasonable price or grab one off

Thank to everyone answering so far. I am definitely glad I asked first. Thinking that I will just install the AGC and call it a day.

Wayne, it is very easy to lift the tiny traces between the crystal and IC1 when pulling crystals ... even when pulling one lead at a time. Be very careful with that part of the procedure. I lifted one

4SQRP has a kit for $12 plus shipping designed and by nm0s. Has LEDs to indicate approximate power levels. They may not be able to ship international. Jim w0nkn

Rob, From reading the WSJT-X group I see that Hamlib is incorporated in the latest WSJT-X as a DLL. libhamlib-4.dll Mike, W9MDB asks people to try a modified version to solve Hamlib problems. From