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There will be no MI QRP Chat on May 8. It is reserved for the Club’s Annual Meeting. We had thirteen folks join the MI QRP Zoom Chat on 1 May. Please join us Thursday May 15 (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the main topics will be QRP and other ham interests. New hams are encouraged to participate and ask questions. It's fun, it's easy, and it's free. You only need a computer, a smart phone, or a tablet that can connect to the Internet. OR if you can't be close to any of those you can join by audio with any standard phone. Just follow the directions below. No software needs to be loaded or installed. Anyone can join and non members are welcome. Details are here: https://www.miqrp.net/zoom Zoom ID: 811 0835 6229 Pete WK8S Ed AB8DF Ernie NE3TE Stan WB8QJZ Casey KC9IH Dave N8SBE Stuart M0SGV Yvon AE7YD Jerry KI4O Bill N5IM Harry K9DXA Robert G0RYL John KC1VPP Bill from TX showed up for the second week in a row. Stan has not been doing much with satellites recently. Not that many passes right now that are capable of doing slow scan TV. New Yaesu QRP rig coming out? Will we see it at Hamvention? There was a leak that there is a companion 100 watt amp. Dave had an old 817 and now has 818. The Elecraft KPA100 amp works well with it. Others use a Hard Rock amp. He has been watching the Rat Pack videos and they have a lot of interesting stuff https://www.ratpac.us. The most recent one was all about packing for POTA. This was Roberts first time in the chart. He is a homebrew builder. Currently playing with a one tube (valve) regenerative receiver. Stuart has his Michigan Mighty Mite working and will try to get it on the air soon. John is new to the chat. His QTH is in Connecticut. He needs CW practice. He has a QRP Labs rig. Yvon is playing with his new ZBitx. So far he is not impressed. Bill did a POTA this week. The mosquitoes were bad. Used a QMX rig and Ham Sticks which is modified to use a telescopic whip. Ernie suggested trying a performer vertical set up to help get better resonance. Harry just finished a QMX+ and it is not working. Others have been able to get SSB to work on their QMX+. He likes using his Ham Sticks for his POTA operations. He also uses the magic carpet approach. https://www.jpole-antenna.com/2024/01/13/this-is-the-new-magic-carpet-faraday-cloth-ground-network/#google_vignette Ed uses one of these adapters https://www.cometantenna.com/product/comet-ad-35m/ with a mag mount. He puts the mag mount on the roof of his car and the adapter allows radials to be attached. Much better than just using the capacitive coupling of the mount for a ground plane. There will be no MI QRP Chat on May 8. The topic for Thursday, 15 May will be TBD. The agenda for the 15 Mayl QRP Chat: Ernie to do a short introduction and acknowledge any new folks to the Zoom chat. The topic for next May 15 will be an open forum. During the open forum anyone can take the floor. We will go one by one until all have had a chance to have the floor. Files, pictures and presentations can be shared if you have any. Please try to stay muted when someone has the floor. Thanks Ed AB8DF

Gotta replace the PAs. To socket them, good or bad? See numrous sockets on ebay and online, but which to order, oh me oh my, what spacing or whatever. What do you say? -- 73 ChuckR

A new chat has been created: Hi, I recently finished building my qmx but when I connect it to the psu it immediately draws 200mA of current and voltage drops to 3,7V (from initially 7V). The device boots up fine and I can connect to it via the serial console. I get the following output from it: Supply Voltage: 3.7 V 5V SMPS Status: Error Voltage: 3.34 V Duty max: 85 % Duty cycle: 85 % Bias is off. I can't find a short between any of the voltage rails and when testing the buck converters they seem to be fine too. Any ideas where I can start looking? Cheers Lieven DF1CN By: df1cn@... View/Join This Chat Do not reply to this message to post to the chat. You can participate in chats only through the group's website.

The following report is for the latest (SSB-)firmware 1_02_000, 80-20m band version and SSB-mode. When transmitting in dummyload or resonant antenna, the same occurs: At the beginning of the transmit the SWR-meter of the QMX overshoots to maximum level for a very short time (about half a second) and then goes down to the real SWR. Generally not a big problem. But on 80m band the SWR protection kicks in every third or so TX-cycle. I think it is because of the overshoot(?). The other 4 bands do not have that problem Has anybody experienced the same?

Well I have done it again. My QMX mounted. I deleted the old firmware and copied the new SSB version. I did notice there was another file that started with e. I emptied the trash and checked the contents of the mounted QMX volume. It was empty. I started to recopy the firmware and the QMX unmounted. It will not mount, nor will the unit turn on. What have I done and how can I fix it? Jim

?I am having trouble uploading the newest firmware to my QMX+. In "Upload Firmware" window on the QNX+, I click the tune button when "Click Tune" appears, and the QMX screen goes blank, as the manual says it would. But No QMX memory stick symbol appears on my MacBook screen.The radio stays shut off. Nothing seems to be happening, My QMX+ has been running just fine with the older version and my USB cable is in good shape (I have used it for many other things such as uploading Arduino software without any problem). What am I doing wrong? Any advice would be appreciated. Hiroki AH6CY Sent from the all new AOL app for iOS

I just hooked my scope up to the drain of one of the PA transistors in my QMX+ and kicked off a 160M Phase cal (O button). I am seeing 120 volt spikes during the cal. Here is a link to a screen shot from my scope: 160PhaseCalGlitch.jpg This is going to fry some BS170s for sure. Tony ADoVC

Hi Hans, Is there a maintained Feature Request list available somewhere where we can check if what we’d like to see has already been asked for, and perhaps add a vote? I know posts can get lost in the volume, and I expect that is why there was no answer on my question on having variable TX power available as a setting (/g/QRPLabs/message/143397), but I don’t want to bug anyone, so if there was a tracker we could look at, it might save you getting duplicate requests or being bugged by people like me :-) Love the pre-built QMX, am going to get a QMX+ kit to have a go at… 73, Stefan MI0PYN

Hi, I have released a version 1.2 of the solution. Please refer to the readme front page file at the git repository with details: https://github.com/AC8L/QMX_Plus_Autotuner_Internal_Battery_Speaker/ While I am writing this note - a group buy with 35+ participants is happening for this same version 1.2 - organized by Cal (AD8Q) and Stan (KC7XE). -- 73, Sardar (AC8L, 4K6SA, VA3DUA).

Attached is a basic python script I am playing with to poll the QMX LCD. Some example uses: python ./Poll_QMX_LCD_v1.1.py --table --add-raw python ./Poll_QMX_LCD_v1.1.py --stream-cw python ./Poll_QMX_LCD_v1.1.py --json >> ./log.json

I have an odd situation here with my 12V QMX+. I could transmit normally on all bands with a 9V power supply. But at 12V when I transmitted on 12m (24.910 MHz) the current draw was quite a bit higher than on the other bands. My power supply's current limit was set at 1.0A and it hit that. All other bands drew less than an amp. After transmitting at that frequency the receive current had jumped to 300 mA (previously about 100 mA) and all the other bands transmitted about half the output power they had before. I replaced the finals and it happened again. Transmitting on 12m at 12V caused a failure in the finals. (Possibly Q507 as well. I get no RF output at all on any band now.) Any ideas on what might cause that one band to zap the finals? I've looked over its lowpass filter and don't see any visible shorts, and the inductors have the correct cores and number of turns. I was able to transmit on 10m before trying 12m and it seemed to work, although with less power out than the other bands.

Hi all, Long press of Select enters the Menu system, displaying "Audio" (or whatever). But while still pressing Select, turning the Tune knob could exit the Audio menu and instead, select another band, up or down depending on the turn direction. This would be handy, especially using the QMX+ which requires 11 Vol button double presses to go down to the next lower band. -- 73 Matti OH6BEX

Hi all Yesterday we had a total of 7 visitors to QRP Labs from Mugla Deniyap (technology workshop) and Mugla university. Only one (Necati TA7MNA) is a radio amateur. We had a great time with hours of discussion about QRP Labs products and amateur radio in general. Then we arranged a workshop activity to prepare and launch two U4B tracker balloons, which we have called Deniyap-1 and Deniyap-2; these fly with callsigns G0UPL and TA7MNA respectively. By the time we were ready, and had driven to put helium in the balloons, it was evening and already completely dark. We launched from a nearby football field by the light of car headlamps and mobile phones. Of course as it was dark we had no telemetry from the balloons and no idea of success or failure until the following morning. But surprisingly both Deniyap-1 and Deniyap-2 showed up near Suez, Egypt having crossed the Mediterranean overnight. Deniyap-1 (callsign G0UPL) suffers a broken antenna (the wire snapped during launch) so far fewer reception reports. Deniyap-2 has crossed the Northern part of Saudi Arabia today and is almost at the Iraqi border. I prepared a web page which includes lots of photos of our activities, construction and launch: https://qrp-labs.com/u4b/deniyap.html 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl