I feel your pain.? Mine just never worked right out of the box.
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Very sad news, years back ?we used to corrospnd ?and exchange ideas. He will be missed a lot in homebrew circles. Heartfelt condolences to the bereaved family members of Rahul.
Satyan vu3mes.
On Thu, 15 Sep 2022 at 21:36, Ashhar Farhan < farhanbox@...> wrote: Rahul was the guy who took the ugly built original bitx20 and laid out the first pcb for it. It opened up homebrew ssb for hundreds if not thousands of hams. Sunil's boards are his designs. He was a fabulous homebrewer who got things right in the first pass. A knack of the highest order. We spoke at least once a week and he was a great draw at the Lamakaan Amateur Radio Convention. Last convention, he gave away hundreds of PCBs of Norcal40. From the simple bitx radios, his footprint extended to setting up Apache Labs, the manufacturers of the high end ANAN radios. I spoke with him just two days ago, he was in septic shock, with poor prognosis, being transferred from one hospital to another. Incredibly, we chatted about putting up a yagi as soon as he got better. I knew I was lying, I hope he didn't. He will be missed badly. - f
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The sBitx will now be an expensive display item in the showcase.
I have changed the PA-fets twice during the last week.
?
Today the PA gave up after two and a half FT8 blocks on 20m (pskreporter gave 30 reports!). Power settings was 10W and my power meter said 15W to the antenna.
de oz9ny, niels
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Re: #sbitx Upgrades shipped
#sBitx
I also have not received mine.
James NU5E Sbitx #47
On 9/15/2022 9:52 AM, Neil Goldstein
wrote:
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Show quoted text
Ashar, and all,
I have yet to receive my upgrade kit.?
Anyone else not received theirs yet?
--Neil, W2NDG? sBITX #69
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Re: #sbitx Upgrades shipped
#sBitx
Received mine two days ago.
--
KB3LYB
sBitx #077
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Re: PTO without 3D printer
Nope, not taking the screws out.? Seriously while it works copying it would
how I torture you.? Everything is built from my not near 55++ years
accumulating junkbox.
The idea is not original.?
You have images of the screw and coil assembly and asume the screw has a hex nut.
Now if you put a deep socket with the correct hex inside shape you can rotate the screw
in or out without the socket doing same.? Imagine the socket on a shaft with a bearing
and a knob.
IF the screw only had a pin at its end we still have something we can? grab and turn,
so if a tube with a long lengthwise slot were slid over that pin we can turn the screw
but the tube does not have to go in or out.
There are several ways to vary that.? The kit described and sold uses a threaded bushing
as a fixed rotary element with the knob.? A screw threads in and out of it when it turns.?
The intermediate board with nut prevents the retained threaded screw from turning see?
the manual for how that one works.? ?
One of many ways to solve this problem.? The real trick is to do it with easily obtained
materials and limited tools (hobby saw, files, drill).? FYI the slotted tube was done using
a Dremel tool and a narrow cutoff wheel, very carefully to keep it straight.
Allison
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Please use the forum, offline and private will go to bit bucket.
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Re: #sbitx Upgrades shipped
#sBitx
toggle quoted message
Show quoted text
On Sep 15, 2022, at 12:54, Ashhar Farhan <farhanbox@...> wrote:
? Dunno, I will check this. Ashar, and all,
I have yet to receive my upgrade kit.?
Anyone else not received theirs yet?
--Neil, W2NDG? sBITX #69
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May Rahul's spirit inspire others to continue imagining? and building.
?
Allison
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Please use the forum, offline and private will go to bit bucket.
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Re: First use of LTSpice (For tests filters 45mhz)
Hello,
Yes, thank you
As with Kicad, I need time to figure out how LTspice works.
Fortunately, there are plenty of videos to explain all this.
I even saw that we can also simulate in Kicad.
So many things to do with the net.
I was wondering if anyone had done a LTspice diagram of a complete Ubitx. A school case to test. LOL
See you soon
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Very sad news.? My condolences to Rahul's friends and family.? I did not know him personally but have followed his contributions to our hobby.? We have all benefited from his work and will miss him.
--
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Ashhar:
I did not know Rahul personally, but I have followed his posts and contributions for years. There is a void in the Universe that saddens all of us.
Jack, W8TEE
On Thursday, September 15, 2022 at 01:41:00 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
On Sep 15, 2022, at 12:39, Ashhar Farhan <farhanbox@...> wrote:
? David, Thanks. Let's see what our club will do.. - f
Ashhar,
My sincere condolences. Always hard to grasp the loss of a good friend, and since he was an icon in the Amateur Radio Community, even more difficult,since his work and ideas live on.
Maybe you could dedicate the next batch of sbitxs or ubitxs in His Honor. Maybe stenciling His name and call sign on some.Maybe put out an ebook in Honor of Rahul, by compiling his build notes,schematics,and pcb art and donate the profits to his family.
Regards,
David ac9xh good thru , and FCC
On Thursday, September 15, 2022 at 12:06:27 PM EDT, Ashhar Farhan < farhanbox@...> wrote:
Rahul was the guy who took the ugly built original bitx20 and laid out the first pcb for it. It opened up homebrew ssb for hundreds if not thousands of hams. Sunil's boards are his designs. He was a fabulous homebrewer who got things right in the first pass. A knack of the highest order. We spoke at least once a week and he was a great draw at the Lamakaan Amateur Radio Convention. Last convention, he gave away hundreds of PCBs of Norcal40. From the simple bitx radios, his footprint extended to setting up Apache Labs, the manufacturers of the high end ANAN radios. I spoke with him just two days ago, he was in septic shock, with poor prognosis, being transferred from one hospital to another. Incredibly, we chatted about putting up a yagi as soon as he got better. I knew I was lying, I hope he didn't. He will be missed badly. - f
--
Jack, W8TEE
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toggle quoted message
Show quoted text
On Sep 15, 2022, at 12:39, Ashhar Farhan <farhanbox@...> wrote:
? David, Thanks. Let's see what our club will do.. - f
Ashhar,
My sincere condolences. Always hard to grasp the loss of a good friend, and since he was an icon in the Amateur Radio Community, even more difficult,since his work and ideas live on.
Maybe you could dedicate the next batch of sbitxs or ubitxs in His Honor. Maybe stenciling His name and call sign on some.Maybe put out an ebook in Honor of Rahul, by compiling his build notes,schematics,and pcb art and donate the profits to his family.
Regards,
David ac9xh good thru , and FCC
On Thursday, September 15, 2022 at 12:06:27 PM EDT, Ashhar Farhan < farhanbox@...> wrote:
Rahul was the guy who took the ugly built original bitx20 and laid out the first pcb for it. It opened up homebrew ssb for hundreds if not thousands of hams. Sunil's boards are his designs. He was a fabulous homebrewer who got things right in the first pass. A knack of the highest order. We spoke at least once a week and he was a great draw at the Lamakaan Amateur Radio Convention. Last convention, he gave away hundreds of PCBs of Norcal40. From the simple bitx radios, his footprint extended to setting up Apache Labs, the manufacturers of the high end ANAN radios. I spoke with him just two days ago, he was in septic shock, with poor prognosis, being transferred from one hospital to another. Incredibly, we chatted about putting up a yagi as soon as he got better. I knew I was lying, I hope he didn't. He will be missed badly. - f
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My sincere condolences to Rahul's family. He was one of my best friends since many years. He always encouraged me with new ideas . I just met him last week. I thought he would be ok after a liver transplant. But seems the universe wanted him for something better.? De? Sunil vu3sua
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Re: First use of LTSpice (For tests filters 45mhz)
You can try calculating the values for a simple filter or use the digikey calculator here
There are several calculators around that will give you several poles depending on the accuracy you want.
Then draw the appropriate Inductor /Capacitance in LTspice with a voltage source and a 50 ohm load.? Don't forget the ground. Right click on the voltage source and put a 1 where it says ac amplitude. Then go? to simulate, edit simulation card and select ac analysis.? Select type of sweep: Decade. Start freq 100, stop freq 1 Meg.? Be sure to type Meg because M will give you 1000.? ?Now run and it should draw a bode plot of the filter.
Andy KM4TRT
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Hi Ron;
Some software improvements have been made that should reduce or eliminate this. Be sure you have downloaded the latest, and/or try the K3NG variant. Instructions for doing both are in recent group email archives.
73; Steve, N3SB?
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-------- Original message -------- From: "W2CTX via groups.io" <w2ctx@...> Date: 9/15/22 12:13 PM (GMT-05:00) Subject: [BITX20] Odd!
I have been having trouble with getting sbitx to receive.? I tried deleting my settings file with no luck. By accident I found that by running the software, closing it, and running again a second time the receive works every time.
Just more info for the group.
Ron
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Re: PTO without 3D printer
On Tue, Sep 13, 2022 at 10:35 AM, ajparent1/kb1gmx wrote:
As to PTOs the in-out screw woks well but not from the front panel.
The solution is mount the PTO and screw assembly add a pin to the
end of the screw and slide that into a slotted tube that can rotate but
no move back and forth.? I use a 1/4" (.25" ~5.56mm) tube and the
screw is typically 8/32 brass of I thread some aluminum rod.? FYI since
the slotted tube is fixed but rotates its easy to add a linear pointer
style dial (pointer, track to ride on and dial cord with spring for tension).
Hi Allison -? VFOs and now variable inductor VFOs have become a bit of a mania for me lately!? Thanks for the description of the mechanism but if you could post a picture it would be very helpful. I'm having trouble visualizing what you describe. 73 and thanks for all you do for the hobby! Dean KK4DAS
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Re: #sbitx Upgrades shipped
#sBitx
Ashar, and all,
I have yet to receive my upgrade kit.?
Anyone else not received theirs yet?
--Neil, W2NDG? sBITX #69
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Gian, Thanks. I will pass on the group's wishes and regards.
Hi Hashhar, very terrible news about Rahul. He was a very knowledged ham and shared his knowhow.
RIP dear Rahul
Please accept my condolences and pass these tohis family.
Tnx & 73
Gian I7SWX
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Jim K5KKB Steeb
Gerard
Sunil Lakhani
Neil Goldstein