Bruce VE9QR[P]
ve9qrp@mastodon.hams.social
<p>From tubes and crystals to gnuradio, with lots of solder and python code along the way.</p>
Posts
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Post #2609215
Peaking the IF on this GR-10 yields acceptable sensitivity on 10m: https://youtube.com/shorts/v3wtld8pNBA
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Post #1963285
First QSO with the GR-10 was Jim, @VE1KM. We hold an open weekly QRS sked at 3566 kHz on Wed. at 20:30 AST.
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Post #1963284
Building a 40m trap to add a lower band to my 30m/40m vertical. 80m or 60m?
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Post #1963283
Great fun in the ARRL DX CW contest this weekend: over 300 QRP QSOs. Here&#39;s a short video on a really helpful trick with modern radios during CW contests: https://youtube.com/shorts/j_Klch4Pp0E?si=ENbLJ2py3W9qhLYs
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Post #1963282
Got Pat Winlink / ARDOP working with my IC-705 and Digipi today. We have a monthly emergency exercise in this area, and I&#39;d set a goal to be able to check into it by Winlink.
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Post #1963281
Using a NanoVNA to test the centre frequency of the filter on this 1940s GR-10 receiver, I found it is 445 kHz, not the 455 indicated in the manual. Because this was maintained by the Canadian airforce at least into the 60&#39;s, someone retuned the local oscillator to around a 445 kHz offset, too, which is why the filter sounds so good.
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Post #1963280
Finally, a 12v USB-PD battery and trigger cable arrangement for QRP rigs. This demos it with a 4w QRP xceiver, but it later even sourced enough current for my IC-705 to do 10w. Take note, all you QMX builders.
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Post #1963279
Stitched up a holder for my Nextool mini sailor multi tool to keep the pocket lint out.
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Post #1963278
It seems that FreeDV contacts should count as &#39;Phone&#39; with respect to ARRL awards such as DXCC. As I&#39;m trying to get these with 5w or less (900 mW on the digital modes), this is an interesting development.
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Post #1963277
We&#39;ve harvested about a cup of syrup from this grand maple in our forest so far this winter. This is about the two pails full. All has gone on breakfast pancakes, HopelessDemigod@mstdn.social
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Post #1963276
With VU2NXG freshly confirmed, I&#39;m two more away from DXCC QRP CW. And CX1SI and I just had a 2xQRP contact on 10m.
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Post #1963275
Just one more CW confirmation to go for QRP CW DXCC. C&#39;mon Austral Islands!
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Post #1963274
Using an ESP32 microcontroller to post my boatanchor receiver&#39;s frequency on a web page and sync my modern transmitter. Project repository: https://codeberg.org/VE9QRP/Tug-Boat