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First Msg
羲堁极郤This MSG starts the Amateur Radio Builders group. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? |
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T41 Boards
羲堁极郤As you probably saw, I placed the group-buy order for 400 of the 8-board sets for the T41.? They should arrive in the next two weeks.? In the interim you will start to see build notes for the project, along with some new innovations from myself and other builders here.? I＊m in the process of ordering my final prototype boards for my new 20W module, 100W module, and LPF for both.? These are innovative in that they are commercial quality products at dirt-cheap prices that you can build.? I will only be selling the boards＃ not kits or finished products. ? The amps are 1 mw input for full power of 20W or 100W out continuously＃ frequency band of 1.8-54 MHZ and +0/-0.8 dB over that range for amazing linearity at 12V (13.5VDC).? The 20W module is about $35 to build (if you source all new parts), and the $100W module is more like $80.? I also have a LPF design that goes with the Amps that you can build to replace the one in the T41 or use with these amp modules that has 5 pole filters for each band, a PIN diode TR switch, and a built-in SWR bridge.? Later in the year I＊ll also offer a tuner board to work with these.? These modules are perfect for the T41, but can be used for the uBITx or QRP-Labs gear＃ or any QRP radio (since the amps have input pads for adjusting the power input level). ? Let＊s have some fun building !!! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? |
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Re: Your New Group
羲堁极郤A good place for the T41 and a lot of other projects.? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Dale Hardin KS4NS
Sent: Wednesday, July 13, 2022 5:55 PM To: [email protected] Subject: [AmateurRadioBuilders] Your New Group ? Hi Bill, I' m happy I landed safely!? I hope this site becomes a great builder's hangout for the T41 and all the mods and hacks to follow.? Regards, Dale |
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Re: Hello Everyone
羲堁极郤Over the years I＊ve designed and build 100＊s of projects and kept them to myself. ?You would be amazed＃ tower-end switches, rotor controller (8 on a board), remote watt meters＃.that were all fiber linked to the shack (yep, no lightning issues).? Built micro-watt meters, and remote (internet) watt meters.? My friends would come over＃ see the stuff＃ and say I should sell it.? I＊m not into selling stuff＃ I＊m into building stuff.? Lots of stuff that we can discuss. ? Lately I designed a small field strength receiver that you put onto a drone＃ sweep and take data on command in the field on antennas to generate patterns for comparison to design programs＃? I＊ll bet there would be interest in that here. ? There are two other projects I want to work on too＃ Revamp the 5B4AGN filter box＃ make it smarter for today＊s radios and use surface mount RF capacitors to make it more stable.? A friend designed a filter box for FD so that two transmitters can be operating in the same band easily.? I also want to have a look at updating the old triode and tetrode boards. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Andy (G6LBQ)
Sent: Thursday, July 14, 2022 3:26 PM To: [email protected] Subject: [AmateurRadioBuilders] Hello Everyone ? Happy to have joined the group and looking forward to future projects and interesting messages. |
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Latest on the T41 boards...
羲堁极郤Latest T41 project board group buy: ? I placed the full order for 400 board-sets on 07-12-22. They are in manufacture and should be delivered to me within 2 weeks. Board sets delivered to me (3,200 boards total at 75kg!!!) are $6.15 per set of 8 boards PLUS SHIPPING. Once I receive them you can determine how you want them shipped to you, PayPal me, and they will be shipped immediately. Check the file for latest announcements and orders. Group buy board sets will be shipped anywhere in the world when you pay the shipping. You can now get MIC29310-3.3WT regulators with your board order for $2.20 each. ? From the tracking file on the SoftwareControlledHamRadio group: ? The only way to contact me is via email: bill@... or thru the AmateurRadioBuilders group. Note that I have opened a new group for builders: [email protected] Please join for latest news! The updated Gerbers basis the comments from the QC Group were completed 07-12-22. 400 board sets (a set contains 8 boards＃ total ordered was 3,200 boards!!!) were on 07-13-22, are in production, and I expect them to be Delivered within the next two weeks. AFTER THEY ARRIVE, I'll ask for you to PayPal me (check in advance is fine too), your order will then be sent out. So far it looks like the board sets will be $6.15 (plus shipping cost, whatever u select). Please be patient. For shipping, a full board set in a Tyvek bubble envelope weighs 8 ounces. ?Basis QC board sets just shipped, shipping cost in the USA is $2.76 via USPS. Additional shipping costs with more board sets/ with regulators, etc. I ship anything everywhere in the world as long as you are willing to pay the shipping cost. ? With the T41 boards is complete, I will be offering boards for 20W, 100W, HP LPF, and tuner add-on module for the T41. These modules are extremely linear from 1-54+ MHz, and can be driven to full power with 1 mW. LPF has PIN diode switching. Prototype boards were ordered with the T41 sets. They will arrive next week. ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? |
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Re: Hello Everyone
羲堁极郤Welcome aboard! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Doug W
Sent: Friday, July 15, 2022 1:21 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] Hello Everyone ? On Thu, Jul 14, 2022 at 04:05 PM, K9HZ wrote:
That does sound fascinating.? It was my interest in longer range telemetry that finally pushed me into getting my ticket.? I then stopped playing with flying things as radio took up more of my attention.? I just started looking at drones again and am amazed at how far things have come in a few years.? Although it looks like less choices for builders vs buyers now. |
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New Audio Board
羲堁极郤My hands cannot remain idle.? While waiting for my new 10W (its really 20W) amplifier prototype boards to arrive (Thursday I hear), I cooked up a new little board that plugs into the spot on the T41 where the audio chip is＃ you either put pins in where the TDA7266 chip is (and the speaker pins) or ＃ if you have already built/ soldered the TDA7266 in＃ remove it and replace it with tall IDC sockets like what＊s on the Teensy.? You then just build this thing and plug it into the board.? What it offers is good audio, but also the speaker output/leads not tied to B+ like the speaker leads are with the existing TDA7266!? That＊s very problematic when you try to use some outboard gear with your radio＃ like FT8 modes where you need to plug the radio into the computer.? If you do that without using a transformer you will SHORT the 12V line to ground! ? Anyhow＃ there is a little extra room on the board and I can add a headphones amp (with separate volume control) or treble/ bass control?? What do you think? Gimme some feedback and I＊ll make and distribute a few of these boards to you builders for feedback. ? ? A Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? |
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Re: New Audio Board
I plan to use my T41 for digital modes.? I was not aware of the 12v problem.? I think the audio board with a headphone amp would be a good add.? Would one be able to listen to the digital modes through the headphones while connected to the computer? On Sat, Jul 16, 2022 at 4:56 PM K9HZ <bill@...> wrote:
Dale Hardin Elberta, AL? --
Dale Hardin, KS4NS Elberta, AL |
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Re: New Audio Board
羲堁极郤Yeah that＊s the idea＃ listen while its connected to the computer＃ ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Dale Hardin KS4NS
Sent: Saturday, July 16, 2022 6:06 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] New Audio Board ? I plan to use my T41 for digital modes.? I was not aware of the 12v problem.? I think the audio board with a headphone amp would be a good add.? Would one be able to listen to the digital modes through the headphones while connected to the computer? ? On Sat, Jul 16, 2022 at 4:56 PM K9HZ <bill@...> wrote:
? -- Dale Hardin Elberta, AL?
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Re: New Audio Board
羲堁极郤Like a ※line out§ with level control plus the normal speaker/phones with its own volume control. ? Yeah look at the schematic＃ I think a lot of people are gonna be sorry when they plug the speaker wires into anything but a speaker!? Its gonna blow up a lot of stuff. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of K9HZ
Sent: Saturday, July 16, 2022 6:13 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] New Audio Board ? Yeah that＊s the idea＃ listen while its connected to the computer＃ ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Dale Hardin KS4NS ? I plan to use my T41 for digital modes.? I was not aware of the 12v problem.? I think the audio board with a headphone amp would be a good add.? Would one be able to listen to the digital modes through the headphones while connected to the computer? ? On Sat, Jul 16, 2022 at 4:56 PM K9HZ <bill@...> wrote:
? -- Dale Hardin Elberta, AL?
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Re: New Audio Board
Bill, I think both would be great.? A line level output as well as a headphone output, potentially with a built in amp but at least some form of volume control. Thank you. 73, Brian - N8BDB? On Sat, Jul 16, 2022 at 7:16 PM K9HZ <bill@...> wrote:
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Re: New Audio Board
Bill, If I understand correctly, would this board connect on its edge or flat like the audio hat?? I'm not seetin where the connectors would go. 73, Brian - N8BDB? On Sat, Jul 16, 2022 at 8:21 PM B Bowling <bowlingb@...> wrote:
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Re: New Audio Board
羲堁极郤No it goes on to the main board flat＃ like plugging in the Teensy.? Right now there are no connectors for it to sit on＃. BUT if you replace the TDA7266 chip pins with IDS sockets (like for the Teensy)＃ now you have a socket to plug this daughter board into.? There are two additional pins for the speaker that Al and I added to this version of the board that this daughter board will sit on.? It＊s ingenious really＃ very simple. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Brian Bowling
Sent: Saturday, July 16, 2022 7:24 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] New Audio Board ? Bill, ? If I understand correctly, would this board connect on its edge or flat like the audio hat?? I'm not seetin where the connectors would go. ? 73, Brian - N8BDB? ? On Sat, Jul 16, 2022 at 8:21 PM B Bowling <bowlingb@...> wrote:
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Gearing up for Distribution of T41 Board Sets
羲堁极郤I feel like ※Lewis§ in the movie ※Trading Places§＃ I＊ve cornered the ※regulator Market§＃? That would be 250 MIC29310-3.3WTs to go with the T41 board sets for those who ordered them. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch 每 K9ZC Staunton, Illinois ? Owner 每 Operator Villa Grand Piton 每 J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? Moderator 每 North American QRO Group at Groups.IO. ? email:? bill@... ? ? |
K9HZ
Len, KD0RC
Dale Hardin KS4NS
g6lbq
Brian Bowling
