I thought the qrp-tech group be interested in this very simple fix to a very simple direct conversion receiver PTO: https://soldersmoke.blogspot.com/2023/03/fixing-tuning-problem-in-high-school.html B

The following files and folders have been updated in the Files area of the qrp-tech@groups.io group. * /K8IQY Home Brew 15-Meter Direct Conversion Transceiver/DC-HB Rx Front-EndV1-Schematic.pdf ( http

The following files and folders have been uploaded to the Files area of the qrp-tech@groups.io group. * /K8IQY Home Brew 15-Meter Direct Conversion Transceiver/DC-RxMixer-AudioV2-Schematic.pdf ( https

Hi Alan, Here: <https://groups.io/g/qrp-tech/files/K8IQY%20Home%20Brew%2015-Meter%20Direct%20Conversion%20Transceiver> ( https://groups.io/g/qrp-tech/files/K8IQY%20Home%20Brew%2015-Meter%20Direct%20Co

Jim Kortge <jim.k8iqy@...> added folder */K8IQY Home Brew 15-Meter Direct Conversion Transceiver*

Good morning everyone, Today, we are announcing the release of a new MagicBox V2.5 design. The K8IQY/KU4QO MagicBox V2.5, is an updated version of the project designed by K8IQY in 2013 and kitted by t

All, Anyone who missed the first round of parts also missed the CA3039s; they're all gone. There's still plenty of PNP Transistors left though. Same request as before: 1. Email me your mailing address

All, I don't do paypal and don't want to, so let's try it this way: 1. Email me your mailing address and which parts you want. 2. When the envelope arrives, try the parts. They're old and haven't been

All, My employer tossed some old parts. I grabbed a box that contains several thousand each of CA3039 (6 matched diodes, low capacitance, low forward voltage) that might be useful for mixers, and MPS6

2020- wow, what a year. My Happy New Years wish is for 2021 to be much better for everyone. My special thanks to all who ordered my e-book. Prior to covid-19 I procured my breathing medicine for $10 t

All, After a lot of discussion with close associates and thinking through all of the issues with making the PCB available for the NorCal 2N2/XX rig, I've decided not to do it. Here are the main reason

Hello everyone, I have created a new group at qrptech@groups.io. Please do join. You all might not know me because I use joined, but owning groups of various types is something I've done a lot of. Tha

OK, proved my point that there is nothing left for this group to accomplish technically. Going to moderated mode and postings will be left to die after 14 days in the queue. End of this group. Take di

Gang, We are pleased to offer the QRPGuys DSB Digital Transceiver kit. It includes three easily changed FT8 band modules for 40/30/20m. The kit uses all thru hole components. Price is $40. We are also

Hello everyone, This is my inaugural post here in the QRP-Tech group. I have done a lot of hacking on the BITX40, and feel that i understand it fairly well. I also have homebrewed a DC receiver. I've

Finished the assembly and started the tuning and adjustments. Connect power -- No Smoke! Adjusted contrast -- OK Started at step 3.71 Did the "Select Band" step, OK Pressed "Left Button", OK Pressed "

This is cross-posted in a few IO groups, just FYI. I have a virgin Wilderness 40A Rev C and want to start sea trials with another 40A. Whether it is a qrp-tech 40A, a Norcal version, or a Wilderness k

Hello. I am working on an ATtiny power / SWR meter, basically a smarter replacement of the famous Tayloe SWR bridge. It will be a 1W to 5W (maybe a bit higher, up to 10W) QRP resistive bridge with 6 L

Maybe some of you have had this same problem. After about a year of non use, I fired up my Feeltech FY3200S and was greeted with a lit-up but otherwise blank LCD, and a constant howl from the on-board

This is a 117V, A.C. line powered, temperature-regulated soldering iron available from Banggood and other vendors. Positives: IMO, this is a fine tool for the price (~$9 - $20 dollars, vendor dependen