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The replacements CAN be polarized but don't have to be. The newer versions use 1 uF ceramic caps. Either is OK Ron [email protected]> wrote:

I think they are all this way. I own 3 of them and they all look the same but work. Adding a wave step would add more cost per board. V 2.0 is shipped with firmware loaded so the port is

I will be doing another CW on the air practice session Friday Evening at 23:00 UTC / 6:00 PM EST. Anyone is welcome. This practice is intended for operators who are new to CW or they need some

I hot glued a number of my toroids and it has not had any discernable effect on performance.? I was mostly concerned about the ones standing one and to keep another from sliding horizontally into a

The key clicks are only on the side tone. The actual transmitted signal is beautiful and produces a perfect sine wave on My oscilloscope. in the version 3 board it’s 2 -10?F Polarized Caps. Should

I’m running T1.09a.

The pin-in-paste method is used for this connector instead of (selective) wave soldering. Therefore one step less is needed during the PCBA production. Due to this method less tin can be seen on the

From the operational manual: There is no way to switch off from firmware update mode by using the encoder button. If you are able to switch off by long pressing the encoder b

Bekir, You are saying that the PC is not showing the QMX+ as having a COM port? Here is my updated page for installing the driver

Damon, You previously said: " After replacement of all, I left off the PA’s and the radio powered up fine. All RX alignments were completed satisfactorily and performance is impressive. The new

Here: https://s3vi.ndc.nasa.gov/ssri-kb/static/resources/nasa-std-8739.1b.pdf A good visual guide to soldering: https://workmanship.nasa.gov/lib/insp/2%20books/links/sections/files/601.pdf 73, Don

Note also that there were firmware versions which addressed key click issues. So check the firmware version on your QCX and check the firmware revisions history to see if anything affects it. It could

Thank you for sharing the case! Would it be possible to share the folding legs and accessory platform?

Hello Charles There is no ADC involved. All transfer from the PC to the QMX is digital via the USB audio sound card emulation of QMX. So what happens if you have a sinewave at full 100.0% volume, the

Thank you Ludwig. I have already done those. Furthermore, I had also tried updating the firmware, although not necessary, to see if the PC-rig connection is working. QMX+ was connected as an external

Have you checked that the correct devices are still selected in WSJT-X? 73, Paul — AI7JR

Space just under the display is perfect. Nice woodworking?

I can’t paste a link but if you search: NASA-STD-8739.1 It will take you to a wonderful PDF that explains everything to do with staking down electronic components.

Nice work Dan!

Damon, blinking "6" only in TX mode or also in RX mode before try to TX or after try to TX? For TX mode 250 mA is much to low and the power supply will hit the limit. When the power supply is going