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Re: LT Spice Alternatives
Karl,
Thanks for sharing you video. I looked at Spice many years ago and found it too confusing. Your video inspired me to take another look, so I downloaded the LT to my Mac.
When I started and
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Newt N4EWT
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#9447
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Re: LT Spice Alternatives
Nick,
The problems I was having were, as I mentioned, getting LT Spice to "properly" display/plotting of a filter. Ironically,? the video that Karl made directly addressed the LPF I was working on.
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k6whp
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#9446
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f_T fixture and cheap transistors [long]
Gang,
1.? First of all you are going to need something like the
following RF probe to measure the output of the f_T
tester we have been discussing in previous posts.
There are a lot of RF probes
By
chuck adams
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#9445
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QRPBuilder at FDIM
Gang,
The QRPBuilder magnetically attached Iambic and Single lever Paddles are now back in stock. Also, this will be our fifth year at the Dayton FDIM vendor night on Thursday May 15, with all our
By
Ken wa4mnt
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#9444
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Digi-key
Nice piece this morning on NPR regarding Digi-Key.
https://www.npr.org/2025/04/24/nx-s1-5332209/digikey-tariff-small-minnesota-town-big-company
I didn't know it was started by a ham
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Gerald Wolczanski
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#9443
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Re: cheap aliexpress LC100a = $13 paperweight?
Thanks Stephen.? Doug posting that article yesterday is what got me leaning toward fix it and keep it.? Seeing it again has pushed me 99% over the fence.
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Doug W
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#9442
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Re: cheap aliexpress LC100a = $13 paperweight?
Thanks Mike.? Do you remember what you replaced L1 with?? The more I read it looks like the less the value matters.? I now have a folder full of different cal routines and will probably try them
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Doug W
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#9441
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Re: cheap aliexpress LC100a = $13 paperweight?
Here is an article on how to improve the LC100A.
https://ludens.cl/Electron/LC100A/LC100A.html
[email protected]> wrote:
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Stephen Tremblay
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#9440
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Re: cheap aliexpress LC100a = $13 paperweight?
Doug,
I bought one of these about 5 years ago. I replaced the L1 toroid
immediately and got reasonable results. I can tell you that a big
improvement came by using a rather convoluted calibration
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Michael Maiorana
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#9439
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Re: LT Spice Alternatives
Hi William,
I am glad my video helped a bit. I am no expert in LTSpice, I use it as a tool (just like I don¡¯t need to know the metallurgical ins and outs of building a hammer in order to use it ;)
By
Karl Heinz Kremer - K5KHK
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#9438
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Re: SolderSmoke DC Receiver Challenge
What a deal! That must have been fun, going through all the parts when you got home.
Dave
AA7EE
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Dave AA7EE
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#9437
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Re: LT Spice Alternatives
Karl and Nick,
It was I who dropped the original post asking about alternatives to LT Spice. Because I don't like to clutter up the threads, if someone does not respond after a day or two, I drop the
By
k6whp
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#9436
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Re: cheap aliexpress LC100a = $13 paperweight?
I am using the factory supplied 20cm(ish) leads.
--
¡ì97.313?? Transmitter power standards.
(a) An amateur station must use the minimum transmitter power necessary to carry out the desired
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Doug W
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#9435
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Re: cheap aliexpress LC100a = $13 paperweight?
Doug how long are your test leads? Really long leads can mess up the readings even if zeroed out.
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Tom - VE3PSZ
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#9434
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Re: cheap aliexpress LC100a = $13 paperweight?
Let us know how it goes. I bought one too but "maybe luckily" can't find
it. I think I only paid $10.00 with free shipping.
Jim WB4ILP
[email protected]> wrote:
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Jim WB4ILP
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#9433
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Re: Mighty Mike Transmitter
I don't see the feedback path to cause the crystal to oscillate. If
Q2 is supposed to be a Colpitts oscillator, it is not correct and
missing the feedback capacitors from base to emitter and
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Jim Kortge, K8IQY
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#9432
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Re: Mighty Mike Transmitter
Yeah, I was thinking that it needed those "Collpits" caps.
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Steve Z
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#9431
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Re: Mighty Mike Transmitter
Mike,
I think there should be 2 caps in series from the base to ground with the
midpoint tied to the emitter. Also, remove the .01uF cap from emitter to
ground. I'll research the values for the 2
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Bob Liesen
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#9430
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Re: cheap aliexpress LC100a = $13 paperweight?
Just to add to the fun, here's a picture with the screen removed.
By
Doug W
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#9429
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Mighty Mike Transmitter
I've begun building this transmitter (Manhattan style) but cannot get the oscillator to oscillate. Has anyone built this before? I also put the oscillator into LTSpice and did not see oscillation.
By
Steve Z
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#9428
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