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Re: uBITX not T-41: Inversion of t/r signal
开云体育Hi Mark… welcome aboard.? ? No need to reinvent the wheel… there are plenty of commercial radios doing this already.? I’d just? plagiarize the circuit out of the K3… it works really well for me! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Mark Hatch
Sent: Thursday, October 19, 2023 10:25 AM To: [email protected] Subject: [AmateurRadioBuilders] uBITX not T-41: Inversion of t/r signal ? I am working on a series of new uBITX Raduino boards that support newer MCU's like Teensy, PICO, and the upper end of the Arduino nano family. As part of this I have ported the KD8CEC firmware to these new board designs. All this is on my github:https://github.com/aj6cu |
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Re: File /K9HZ 20W 1-54 MHz RF Amplifier module/20W AMP 160M-6M Troubleshooting Guide V1.00 101523.pdf uploaded
#file-notice
开云体育Thanks Lou.? I’ve had two people in the last month tell me that they had faulty connectors on the coax they used at the output of the amp (not the surface mount but the one on the coax)… and they got warm to hot from pro-longed operation.? I’ll make a future video of me WELDING sheet metal with this thing.? It really is pretty much bullet-proof. ? The troubleshooting document is short and covers some of the common mistakes and expected voltages.? I probably missed some obvious things so if there are others that want to contribute to it… please send me your updates. ? Glenn… I took your advice and added a pad for capacitors (albeit stacked) right at the output transformer (T3) center tap to ground.? Doesn’t make a difference at low frequency, but does at higher frequency. ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Lou, KI5FTY
Sent: Monday, October 16, 2023 10:21 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] File /K9HZ 20W 1-54 MHz RF Amplifier module/20W AMP 160M-6M Troubleshooting Guide V1.00 101523.pdf uploaded #file-notice ? Bill, thanks?for this, very helpful ? On Sun, Oct 15, 2023 at 1:01?PM Group Notification <[email protected]> wrote:
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Re: 20w rf amp - need help
开云体育Ok… ?well I did send you another 3 foot length Friday a week ago by Airmail.? It’s the right stuff for what you need.? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Bruce VA3BKI
Sent: Sunday, October 15, 2023 8:52 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] 20w rf amp - need help ? This is an expansion. |
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Re: 8 files uploaded
#file-notice
开云体育Yes, I use Kicad too… but the original files were and still are in DipTrace.? ? Eagle has vacillated between FREE and EXPENSIVE the entire time it’s been available.? I believe it’s been discontinued now… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of dominic via groups.io
Sent: Sunday, October 15, 2023 2:19 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] 8 files uploaded #file-notice ? A very very long time ago I used Eagle, too, until "they" decided that student/hobbyist licenses for |
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Re: 8 files uploaded
#file-notice
开云体育Yeah.? Well, it’s a really good design program for small PCBs…. Eagle is better for large designs by far. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Glenn P
Sent: Saturday, October 14, 2023 9:42 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] 8 files uploaded #file-notice ? OK Bill, thanks for that. Just wondering really, but not about to spend that sort of money. (US$700 = ~AUD$950) Glenn vk3pe ? On 15/10/2023 11:58 am, K9HZ wrote:
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Re: 8 files uploaded
#file-notice
开云体育Hi Glenn… ? Well… Its not necessarily my favorite, but Al started this by using “Diptrace”… so I bought a copy (the 1000 pin version).? It’s cheap for the low pin count but gets progressively more expensive with additional pins.? The new V012 RF board has more than 1100 pins so the version you would need to purchase is about $700 USD. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Glenn P
Sent: Saturday, October 14, 2023 7:29 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] 8 files uploaded #file-notice ? Bill, what software are you using for the Sch and PCB's? |
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Re: 20w rf amp - need help
开云体育Bruce… did you get the wire? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Bruce VA3BKI
Sent: Saturday, September 30, 2023 4:53 PM To: [email protected] Subject: [AmateurRadioBuilders] 20w rf amp - need help ? Don't know how to send this to one person as K9HZ probably has to answer this. |
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Re: [SoftwareControlledHamRadio] V010 vs V011
开云体育Ok Lou, I’ll get you in touch with the right folks.? I’m currently at a conference in Denver so this my take a couple of days… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Lou, KI5FTY
Sent: Monday, October 9, 2023 8:29 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] [SoftwareControlledHamRadio] V010 vs V011 ? Hey Bill, the?developer version of sBitx was my driver to build your amp, I have not integrated it yet but would love to find the others that did it already.? If you know of?a thread where that was discussed, that would be great.? Thanks for all your efforts and great projects. ? Lou ? On Sun, Oct 8, 2023 at 3:06?PM K9HZ <bill@...> wrote:
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K9HZ