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Re: Audio Hat Hangup
¿ªÔÆÌåÓýOn thing Tim¡ Have you been resetting the flash memory every time you load a program? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 Tim via groups.io
Sent: Wednesday, February 19, 2025 1:49 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Audio Hat Hangup ? I2C scanner found all the addresses However program(ver50.2)will not run with audio hat installed :( Tim |
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Re: Audio Hat Hangup
¿ªÔÆÌåÓýVery strange Tim¡ but we will help you figure it out! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 Tim via groups.io
Sent: Wednesday, February 19, 2025 1:49 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Audio Hat Hangup ? I2C scanner found all the addresses However program(ver50.2)will not run with audio hat installed :( Tim |
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Re: Audio Hat Hangup
¿ªÔÆÌåÓýAnd¡. If it works only sometimes, there is a bad connection somewhere.? Probably either a solder connection of one of the IDC cables. ? Pictures are worth 1,000 words! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 Tim via groups.io
Sent: Wednesday, February 19, 2025 8:24 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Audio Hat Hangup ? Dr. Bill Which I2C scanner SW do you use? Unrelated to audio hat, sometimes when I boot up it does not see LPF or BPF address? All the others are seen. after some fiddling it will work fine.? I check the Ribbon cable and headers on the filter control board and lpf board and the all look good.? Not sure if restarting program clears it up or tweaking hardware solves it.? If the other I2C address are found I am thinking it is not a Teensy issue, does that sound correct? Tim? ? |
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Re: Audio Hat Hangup
¿ªÔÆÌåÓýUse this test software: ? ? See which devices the processor finds from this list: ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 Tim via groups.io
Sent: Wednesday, February 19, 2025 8:24 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Audio Hat Hangup ? Dr. Bill Which I2C scanner SW do you use? Unrelated to audio hat, sometimes when I boot up it does not see LPF or BPF address? All the others are seen. after some fiddling it will work fine.? I check the Ribbon cable and headers on the filter control board and lpf board and the all look good.? Not sure if restarting program clears it up or tweaking hardware solves it.? If the other I2C address are found I am thinking it is not a Teensy issue, does that sound correct? Tim? ? |
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Re: T41 BPF results
¿ªÔÆÌåÓýYou can actually do either, but it will be far easier to stack them one on top of the next.? That¡¯s why it¡¯s written that way in the Assembly manual.? BUT if you can get them side-by-side¡ that works too. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 chris corcoran via groups.io
Sent: Wednesday, February 19, 2025 5:57 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? I was under the impression that if there is enough room, you are better to stack them side by side? (Something about electrickery(sic) flowing the same length through the ¡°stacked¡± components, albeit I can¡¯t see it having much effect at the HF frequencies, keeps the elephants away maybe) ? ? Chris M0YGH ? From: [email protected] <[email protected]> On Behalf Of K9HZ ? You are the one that wrote that section of the manual¡ so, yeah!? I know, we have both slept¡ ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
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Re: T41 BPF results
¿ªÔÆÌåÓýI was under the impression that if there is enough room, you are better to stack them side by side? (Something about electrickery(sic) flowing the same length through the ¡°stacked¡± components, albeit I can¡¯t see it having much effect at the HF frequencies, keeps the elephants away maybe) ? ? Chris M0YGH ? From: [email protected] <[email protected]>
On Behalf Of K9HZ
Sent: 19 February 2025 02:11 To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? You are the one that wrote that section of the manual¡ so, yeah!? I know, we have both slept¡ ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
-- 73 Chris M0YGH |
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Re: T41 BPF results
¿ªÔÆÌåÓýYou have a pretty good method for winding the coils and I don¡¯t want to overlook that¡? ?I sometimes forget I am an insider and don¡¯t always think all the angles¡ too close to the trees. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 9:56 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? I was just offering to help, if you wanted me to. But, you're right, it would be better for someone with a solid electronics background to do it. ? ? ? On Tuesday, February 18, 2025 at 10:27:12 PM EST, K9HZ <bill@...> wrote: ? ? You can do the part that is familiar to you, yes.? But I do sell it as a generic kit for other QRP radios too¡ and it has a lot of additional functionality above what we use for the T41.? I¡¯ll have to do those parts. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Do you want me to do it? ? On Tuesday, February 18, 2025 at 09:13:24 PM EST, K9HZ <bill@...> wrote: ? ? Not its time to do it for the LPF too¡ and a section on winding that line section transformer and how to make the Power and SWR measurement work. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
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Re: T41 BPF results
I was just offering to help, if you wanted me to. But, you're right, it would be better for someone with a solid electronics background to do it.
On Tuesday, February 18, 2025 at 10:27:12 PM EST, K9HZ <bill@...> wrote:
You can do the part that is familiar to you, yes.? But I do sell it as a generic kit for other QRP radios too¡ and it has a lot of additional functionality above what we use for the T41.? I¡¯ll have to do those parts. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 8:26 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? Do you want me to do it? ? On Tuesday, February 18, 2025 at 09:13:24 PM EST, K9HZ <bill@...> wrote: ? ? Not its time to do it for the LPF too¡ and a section on winding that line section transformer and how to make the Power and SWR measurement work. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
-- Jack, W8TEE |
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Re: T41 BPF results
¿ªÔÆÌåÓýYou can do the part that is familiar to you, yes.? But I do sell it as a generic kit for other QRP radios too¡ and it has a lot of additional functionality above what we use for the T41.? I¡¯ll have to do those parts. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 8:26 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? Do you want me to do it? ? On Tuesday, February 18, 2025 at 09:13:24 PM EST, K9HZ <bill@...> wrote: ? ? Not its time to do it for the LPF too¡ and a section on winding that line section transformer and how to make the Power and SWR measurement work. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
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Re: Audio Hat Hangup
¿ªÔÆÌåÓýFirst things first.? If you load the I2C scanner software, does the audio hat respond at address 0x0A on WIRE like it should¡? ?If not, concentrate your resoldering efforts around Pins 18 and 19¡ ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 Tim via groups.io
Sent: Tuesday, February 18, 2025 8:23 PM To: [email protected] Subject: [SoftwareControlledHamRadio] Audio Hat Hangup ? V12 Boards Ver 50.2 SW? All is working no freeze up or glitches since installing ferrite sleeves on ribbon cable. However if I install the audio hat it never finishes boot up before program stops with partial screen. Tried new extender, new audio hat (2) same issue each time. I reflowed the leads on Teensy female headers (may need to do this again) I can install Audio hat with a pair of long pin female headers to eliminate and doubt that extender is issue no help. Could it be SW? I will pull main board and go over all the solder pads to see if that helps. Other wise all good. I had 64 beta working at one point but after reloading a second time it hangs up. (I cleared the memory each time)? Tim W4YN? ? |
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Re: T41 BPF results
Do you want me to do it?
On Tuesday, February 18, 2025 at 09:13:24 PM EST, K9HZ <bill@...> wrote:
Not its time to do it for the LPF too¡ and a section on winding that line section transformer and how to make the Power and SWR measurement work. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 7:56 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
-- Jack, W8TEE |
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Re: T41 BPF results
You're right, I forgot! Jack, W8TEE
On Tuesday, February 18, 2025 at 09:11:04 PM EST, K9HZ <bill@...> wrote:
You are the one that wrote that section of the manual¡ so, yeah!? I know, we have both slept¡ ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 7:56 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
-- Jack, W8TEE |
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Re: T41 BPF results
¿ªÔÆÌåÓýNot its time to do it for the LPF too¡ and a section on winding that line section transformer and how to make the Power and SWR measurement work. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io
Sent: Tuesday, February 18, 2025 7:56 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 BPF results ? Nice. Very complete. Is the term "stacked" explained in the manual? ? Jack, W8TEE ? On Tuesday, February 18, 2025 at 08:35:10 PM EST, K9HZ <bill@...> wrote: ? ? I just put this together today and added it to the back of the Assembly Manual.? Makes it easier to see everything in one place.? The next thing I¡¯ll make and add is a test sheet for measured vs expected performance. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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 jjpurdum via groups.io ? Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091 calls for a T37-6 core with 25 turns. From their table: ? ? ??????? T-37 Core???????????? Length
? 25 turns on a T-37 core takes 14.5". (Simple average of the turn count.)? I would wind one core and see how that works out for the pigtail leads. Adjust as needed. ? Jack, W8TEE ?
? ? On Tuesday, February 18, 2025 at 04:37:44 PM EST, Tim via groups.io <w4yn@...> wrote: ? ? Jack Is there a similar sheet? for BPF's? LPF sheet is working out great Tim W4YN
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K9HZ
jjpurdum