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Re: Multi-function test jig idea for homebrew radios.
I think I have bad news for you William.? In the order process, when you submit the Gerbers, an engineer on the team will inspect the board.? If it does have multiple boards, separated by regions
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chuck adams
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#8897
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Re: SST-20 from Wayne Burdick, N6KR - Manhattan Circuit Construction Madness Project
Daniel Interesting. I imagine the copyright is to disallow someone from commercially selling that manual or large portions of it, likely with a kit. QRP rigs are published to encourage experimenters
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Curt
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#8896
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Re: Multi-function test jig idea for homebrew radios.
Add: Layout for 5th or 7th order LPF or BPF Chebychev or other filters? -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."
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k6whp
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#8895
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Re: Multi-function test jig idea for homebrew radios.
Great ideas. How about making a 100mm X 100mm PCB layout of these circuits, generating the Gerber files and turning on the serration flag so you can submit them to a board house offering a special 5x
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k6whp
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#8894
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Re: Multi-function test jig idea for homebrew radios.
How about a varicap diode C testing fixture...or a setup to measure the choking power of toroidal common mode chokes or the transformers used in end-fed antennas? Regards, Kirk, NT0Z My book, "Stealth
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Kirk Kleinschmidt, NT0Z
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#8893
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Re: WWV receiver
Does anyone have the schematic/information for the simple W1AW receiver? I only vaguely remember seeing it and I believe it was offered as a commercial product at one time. I always wanted one but it
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Jim WB4ILP
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#8892
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Re: Mad Hatters
The 2SC5706 5W RF Amp (FT=400) which came in the 5Watter is still available at kitsandparts. But the 2SC5551A 1W RF Amp (FT=3,500 MHz) is Out of Stock. I am no engineer, so I have no idea where to
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Daniel KK4MRN
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#8891
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Re: Mad Hatters
Daniel, The TI chip was test of a video amplifier.? It was not a drop in replacement. The point, I think, is that we have to find someone who has experimented with them to point out pros and cons.?
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chuck adams
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#8890
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Re: Mad Hatters
Chuck, About the headers - yeah, I like the idea of using an IC socket and headers than doing dead bug style.? Good idea here. And I want to build a SST-20.? Is the Video Op Amp TI TL592P a drop-in
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Daniel KK4MRN
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#8889
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WWV receiver
Here is a beginner project. You remember the VE3DNL WWV receiver standard.? Found schematic online in a search for something else a few minutes ago. I know that some one (Nick?) did an improvement
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chuck adams
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#8888
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Mad Hatters
Builders using Manhattan Construction (a.k.a Mad Hatters), 1.? I use 2.54mm male and female headers for several purposes. See ebay and sort by price+shipping and search for the number you need.?
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chuck adams
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#8887
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Re: SST-20 from Wayne Burdick, N6KR - Manhattan Circuit Construction Madness Project
Hmmmm Once I find a schematic on the internet or some publication, it's fair game for me to replicate it in whole or part.? Period.? Take a look at my QRZ page and see all those stolen designs!?
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Gerald Wolczanski
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#8886
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Re: Crystals
This is the W7ZOI article Walt mentioned showing the new emitter resistor value. I too needed to change mine to the new 3.3 kohm emitter resistor. https://w7zoi.net/filters/9megxfils.pdf 73, Steve
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Steve Ratzlaff
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#8885
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Re: Crystals
Thanks Walt. I'll give that a try and see what happens. I still have that small batch of crystals on my bench. 73 Mike M. KU4QO <wt3i14297@...> wrote:
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Michael Maiorana
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#8884
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Re: SST-20 from Wayne Burdick, N6KR - Manhattan Circuit Construction Madness Project
Jerry, Chuck wants to get permission because the SST-20 is copyrighted - the radio design - manual - schematic. So, out of respect for Wayne - both were originally part of NorCal Club. So, whatever
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Daniel KK4MRN
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#8883
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Re: SST-20 from Wayne Burdick, N6KR - Manhattan Circuit Construction Madness Project
Hard to imagine an individual needing permission to build any published circuit, with or without circuit changes. Jerry W KI4IO Warrenton, VA
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Gerald Wolczanski
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#8882
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SST-20 from Wayne Burdick, N6KR - Manhattan Circuit Construction Madness Project
Hello gang, I was talking to a mentor (Elmer) that I have been talked to many times in the past.? Well, there are many Elmers on this group because this group is a goldmine of great projects and
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Daniel KK4MRN
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#8881
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Re: 2N2/40+ Transceiver
Alan - I also built Jim's Manhattan Islander amp. I built it specifically to fit inside my Fort Tuthill 80, as that rig will only drive headphones. Unfortunately, I wasn't getting good fidelity from
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Dave AA7EE
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#8880
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Re: Sasquatch Stomp March 28
Gary, the website is https://www.pnwqrp.org/sasquatch-stomp Your Sasquatch Number is 880 Hope to work you in the Stomp. 73, Wayne
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Wayne McFee
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#8879
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Re: 2N2/40+ Transceiver
Howard - that 2N2 group is intended mainly for discussion of the Norcal 2N2/XX kit. It would be great if there was a discussion group for 2N2 scratch builds but that doesn't seem to be the case. I
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Dave AA7EE
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#8878
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