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Re: lpf control
开云体育More words… ? ? The resistors do not chance, although you can do that if you originally wind the transformer for 20W and now want to use that same transformer for 100W.? The directions are designed to pick the transformer for what you expect to measure in the final format… so either 20W or 100W by the number of turns. ? ? 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 ron mcmurray via groups.io
Sent: Tuesday, April 22, 2025 11:12 AM To: [email protected] Subject: [AmateurRadioBuilders] lpf control ? what value resistor do you uuse for r 17 and 22 for 100w option. ron, kc0tdj |
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Re: lpf control
开云体育Here is what you need to know (Its on the schematic): ? ? ? 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 ron mcmurray via groups.io
Sent: Tuesday, April 22, 2025 11:12 AM To: [email protected] Subject: [AmateurRadioBuilders] lpf control ? what value resistor do you uuse for r 17 and 22 for 100w option. ron, kc0tdj |
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More boards and kits info...
开云体育For those of you that ordered T41 board sets with the MAIN board in the set (A Full set of V12 boards, or an Upgrade set of $1 V12 boards), You got a pre-programmed ATTiny85 just like usual with the set purchase.? HOWEVER, ?I may have put the part(s) in one of your other packages due to room constraints.? Don’t just throw the packing away without doing an inventory! ? If you ordered a 20W PA kit… remember to carefully remove the inner package from the pink bubble-wrap envelope… and the CAREFULLY slit the two recipe cards apart at the edge (slit the tape, don’t cut the cards!).? When you open the two cards… the parts are facing each other… and you can cut the cards apart then to keep the part numbers with the parts… easier to ID!.? Do NOT remove the parts from the cards before you are ready to use them… and the do so individually.? The FET and the Transistor look alike! ? I have only 3 more packages to wrap up and send.? One is a large order in the USA and I’ll get that one done tonight.? One is for an RF board that I promised to mount the PE4302 parts for him (this is NOT a usual service at the moment).? The last one is an invoice I sent out and have not been paid. ? Please note that I will cease taking orders as of the end of next week to allow time for some traveling and then attending FDIM and Hamvention.? ? ? 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@... ? ? |
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Update
开云体育Just a note on boards and kits… ? I’m a little behind on getting the latest round of boards and kits out.? The response in the last few weeks was so overwhelming that I needed to stop shipping on multiple occasions and put together more kits.? Just yesterday I put together another 25 20W PA kits that took me the majority of the day.? Most of the orders that did not include the PA kit have been shipped and you should be able to track it with the number that got sent to you.? Those orders with the 20W PA I’m working on today and I should have them all sent.? I have two larger orders… one for over-seas and one USA that I will need to get boxes from the postal service to ship.? That will happen Monday.? My goal is to get everything out the door by Monday. ? I’m also gearing up for FDIM and Hamvention so I’ll see a lot of you there… we are inside this year… Building#4 (where you drop off your ticket stubs for the prizes) in spot #4111.?? More on this later and what I will be bringing.? I’ve talked to Al and he will be at our booth on a couple of days with a T41 operating and able to sign books and answer questions. ? ? 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@... ? ? |
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Re: New book
No problem...thanks for buying it!! Jack, W8TEE
On Wednesday, April 16, 2025 at 03:23:20 PM EDT, thomas via groups.io <trmongold@...> wrote:
Yes Chapter 20 is included. My mistake. Tom Mongold W8DLR On 4/16/2025 3:18 PM, Jack, W8TEE via
groups.io wrote:
Did you mean Chapter 20? If
so, good!
Thanks!
Jack, W8TEE
On Wednesday, April 16, 2025 at 03:15:52 PM EDT,
thomas via groups.io <trmongold@...>
wrote:
Jack: I ordered the book on April 12 and received it on April 14. It has the black T41 on the front plus chapter 12. So I am good. Tom Mongold W8DLR On
4/16/2025 1:03 PM, Jack, W8TEE via groups.io
wrote:
ALL:
Has anyone received a copy of the
new T41 book? The new version supposedly became
available after April 4th and has a black T41 on
the cover and Appendix C on Calibration has been
expanded to a new chapter (#20). If so, please
let me know, as I have ordered review copies for
Al and myself twice now, and they have sent the
old pre-April 4th version.
Thanks!
Jack, W8TEE
-- Jack, W8TEE -- Jack, W8TEE -- Jack, W8TEE |
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Re: New book
Did you mean Chapter 20? If so, good! Thanks! Jack, W8TEE
On Wednesday, April 16, 2025 at 03:15:52 PM EDT, thomas via groups.io <trmongold@...> wrote:
Jack: I ordered the book on April 12 and received it on April 14. It has the black T41 on the front plus chapter 12. So I am good. Tom Mongold W8DLR On 4/16/2025 1:03 PM, Jack, W8TEE via
groups.io wrote:
ALL:
Has anyone received a copy of
the new T41 book? The new version supposedly became available
after April 4th and has a black T41 on the cover and Appendix
C on Calibration has been expanded to a new chapter (#20). If
so, please let me know, as I have ordered review copies for Al
and myself twice now, and they have sent the old pre-April 4th
version.
Thanks!
Jack, W8TEE
-- Jack, W8TEE -- Jack, W8TEE |
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New book
ALL: Has anyone received a copy of the new T41 book? The new version supposedly became available after April 4th and has a black T41 on the cover and Appendix C on Calibration has been expanded to a new chapter (#20). If so, please let me know, as I have ordered review copies for Al and myself twice now, and they have sent the old pre-April 4th version. Thanks! Jack, W8TEE -- Jack, W8TEE |
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Re: [SoftwareControlledHamRadio] The T41 from 4SQRP and V11 boards.
开云体育Hi Harry, Thanks for the note. ? I just checked my records and I sold a total of 218 full sets of V10/V11 boards (plus odds and ends of full sets).? But that was two plus years ago.? I may still have sets of V10/V11 bare boards in the recycle box… I’ll dig around to see if I can find some for you because the demand for the V10/V11 sets has dried up as of the V12 release.? In any case, the GERBERS for the V10 and V11 boards are all available at no cost on my GITHUB.? The 4SQRP boards (+GERBERS) are not available to me so I can’t support them as of now. ? Beyond that, I’ve sold 1,200+ sets of V12, and 150+ in stock that I will sell at Hamvention in about a month.? Last year I sold 200 sets at FDIM and HamVention alone in just 4 days, and I expect to do that and more this year, since I now have an inside booth (4111 for those who will attend). ?I will take paper orders if I run out (I expect that will happen because I only have so much space in my luggage).? I will also be selling the latest T41 book (signed copies) from Jack and Al at Hamvention in my booth (NOT at FDIM where Jack and Al will be selling the book). ? I won’t be able to support older versions of the T41 past free GERBERS and documentation.? The cost of doing so is prohibitive.? I have thousands of US dollars tied up in parts and boards… and can only support so much.? I don’t know if Greg supplies boards for your V10/V11 projects or not… I don’t really follow what he does (and hence can’t/ don’t/ won’t comment on it). ?I do see some new directions on the horizon for the T41 after V12.? The RF performance is outstanding… now to supercharge the user interfaces and the I/Q processing parts. ? ? 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 Harry Brash via groups.io
Sent: Wednesday, April 16, 2025 1:11 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] The T41 from 4SQRP and V11 boards. ? Bill Thanks for the long list of specs of the T41-V12. I suppose that Andy G8HCK passed on my inquiry to him for a couple of V10/V11 QSE PCBs and you may be wondering why I’m looking for such old technology.? I’ve been using my original V10 QSE board so much for hardware development that it is starting to fall apart with all the cut traces, solder jumpers and extra mounting holes.?? Fortunately, it still works in its original form. For my purposes, the V12 RF boards are too dense for much hardware experimentation, particularly with 4 layer boards.?? I feel that they don’t encourage the original “EP” concept that Jack and Al first promoted.? I see the V12 concept as almost a pre-production prototype for a commercial radio with very tight specs.? I really admire the way that your team are striving to make it all work and I wish you all every success. My T41 interests now lie in the direction which Greg KF5N is taking both for hardware and software development.? Of course it is a positive sign of an on-going healthy project like the T41-EP that it can and does evolve in several directions and long may that continue ! 73 Harry GM3RVL |
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Re: T41-EP V12 Board Connections and Development of the VHF-UHF Board
开云体育Except that modules that have not been released yet are not part of the connection sheets.? Ask though if you are interested.? The big ones will be the Tuner, the 100W module, and the VHF-UHF module. ? ? 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 Phil Taylor via groups.io
Sent: Monday, April 14, 2025 6:33 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] T41-EP V12 Board Connections and Development of the VHF-UHF Board ? JP ? On this page of Dr. Bills GitHub, you will find all of the interconnections: ? ? I just thought I would add this as there are separate Control Wiring and RF/AF wiring diagrams in that folder too. There are some of the connections on the "Full Options" diagram missing. Then then there are some power and control connections, which are only shown on the "Full Options" diagram, so you kind of have to mash all 3 diagrams together to the full picture. ? Regards? Phil VK2KKZ ? On Mon, Apr 14, 2025 at 03:17 AM, J P Watters wrote:
? ? |
K9HZ
John Owens K1JO
Jack, W8TEE
Tom - AJ8X