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Re: Help aligning VFO
The OP has one particular advantage. My university bought three kits for student projects, so they are effectively free. My ham radio mentees are generally not able to spend $125 for a Bayou Jumper at
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Ross Tucker (NS7F)
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#9220
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Re: Help aligning VFO
Ross Build and see what you get. My own experience with the OP is that it's an exceptional AM signal receiver. At least one builder has added medium wave broadcast band reception. I imagine the
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Curt
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#9219
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Re: Help aligning VFO (Ozark Patrol regen)
I picked a random? T50-2 toroid out of the bag and wound 20 turns #26 with about 3/16" spacing on the ends. On the DE-5000 at 100 kHz test it measures even higher than toroids.info predicts--2.175
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Steve Ratzlaff
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#9218
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Re: Solder expring
For a business, sure makes perfect sense. I agree. For us hobbyist, does not matter. Can't tell the difference between what I recently bought new or the stuff that is many decades old. You think my
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Richard AG5M
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#9217
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Re: Help aligning VFO (Ozark Patrol regen)
Hi Ross, My experience with all iron powder toroids is there are always variations from toroid batch to batch, and actual? inductance can vary quite a bit--one measures the final inductance and
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Steve Ratzlaff
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#9216
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Re: Solder expring
I think it would be for liability reasons. A company that experiences a catastrophic disaster will endure investigations and inquires on their practices. Even if there's no evidence solder is degraded
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Jon Edwards
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#9215
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Re: Help aligning VFO (Ozark Patrol regen)
Thanks for the feedback! Also, btw: the schematic says L1 is 1.5 uH but 20 turns on a T50-2 is supposed to be 1.96 uH. Any thoughts on that? [email protected]> wrote:
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Ross Tucker (NS7F)
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#9214
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Re: The end of inexpensive printed circuit boards and parts
For those who consider just about any conversation as "political" -- I wasn't giving any political views. I was keeping it politically neutral. Not that I have to ask anyone's permission, however. We
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Matthew McDevitt N3AZ
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#9213
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Re: QSL cards
Haha, that's great Hamilton! Yes, I remember that QSO. Got you in the log here. I had been wanting to work you for a while, ever since I read about the Toucans project (on the Soldersmoke blog, at
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Dave AA7EE
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#9212
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Re: Help aligning VFO (Ozark Patrol regen)
Hi Ross, On mine, the Low band tunes 3.90-5.24 MHz; High band tunes 5.46-- ~19 MHz, as you note at least the High band is very wide tuning. Your scheme would probably work but I predict it will take a
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Steve Ratzlaff
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#9211
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Re: Solder expring
Well... I have been licensed for 62 years now, and have lots of old rolls of 60/40 solder going back many decades. As far as I can tell none of it has gone bad, it all still works just fine. Just used
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Richard AG5M
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#9210
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Re: The end of inexpensive printed circuit boards and parts
I would like to add a couple of thoughts: 1. Yes, this is pretty horrible. We can't buy critical equipment, parts, tools, etc. which (let's face it) are made in China. Such is the reality in 2025. A
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Matthew McDevitt N3AZ
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#9209
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Re: QSL cards
Here's what I was talking about re the tradition of QSLing.. https://youtu.be/rYNPBiaTh2Y?feature=shared -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and
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k6whp
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#9208
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Re: QSL cards
General info... The Avery 5689 110# laser cut postcard stock is available on Amazon at $17 for 200 cards. (50 8x11 sheets.) Also, Avery has downloadable templates for Word and those are usable by
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k6whp
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#9207
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Help aligning VFO
I am building an Ozark Patrol regen. The stock tuning range is very large and I would like to limit it. By default, there is a SPDT switch that adds a parallel capacitance for a second range. My goal
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Ross Tucker (NS7F)
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#9206
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Re: QSL cards
If someone sends me a card in the post I use a postcard of the local castle and write out my details in the address part and the details of the contact in the message area. Then I put it in an
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David Ackrill
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#9205
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Re: QSL cards
Dave, I QSO'ed you from the Pony Express Trail across the Bay! I've also be working on video qsl cards just to experiment. I suppose they won't count for anything contest or logging-wise. Also, I'm
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hcarter3333
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#9204
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Re: The end of inexpensive printed circuit boards and parts
I would think that politics really should not be referenced here as it is off-topic. I have hope that the Chinese PCB fabrication businesses will find a way around this mess. They are facing a
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hwstar
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#9203
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Re: QSL cards
Chuck, I use Genaddy in Ukraine, very satisfied. UX5UO print >> Product Mix & Prices ux5uoqsl.com Dave K8WPE
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David Wilcox K8WPE
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#9202
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Re: Encyclopedia of Electronics Vols 1-6
Vanished! Get it here https://www.worldradiohistory.com/BOOKSHELF-ARH/Technology/Encyclopedia-of-Electronic-Circuits-Vol.3.pdf (
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Terry VK5TM
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#9201
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