|
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
|
Here is a link to the spreadsheet with all of the I2C assignments in the T41＃ ? https://github.com/DRWJSCHMIDT/T41/blob/main/T41_V012_Files_01-15-24/T41_V012_Design_Documents/T41_V12.6_I2C_Assignments.xlsx ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of jerry-KF6VB
Sent: Saturday, December 21, 2024 3:59 PM
To: [email protected]
Subject: [AmateurRadioBuilders] V12 first try? OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
|
Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
toggle quoted message
Show quoted text
On 2024-12-21 14:29, K9HZ wrote: Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: www.VillaGrandPiton.com [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
Hook the antenna right to the rf board as a sanity check. Then move back to the next connection, work towards?the antenna RF connection. I had a loose SMA cable and or chassis connection that gave me trouble in my early spin up stages.?
Larry KB3CUF?
Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote:
Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
No RF cables will do that＃..! ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of jerry-KF6VB
Sent: Saturday, December 21, 2024 4:38 PM
To: [email protected]
Cc: K9HZ <bill@...>
Subject: Re: [AmateurRadioBuilders] V12 first try? Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote: Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
What stage of building are you at Larry? ? ? As for me＃ ? I＊m spending the day running some final tests on the 100W module.? I can see I need to use a different current measurement resistor on the board.? It＊s a 3W 0.005 ohm SMD resistor and that will be a problem if the board flexes (cracks). ?I think I＊ll use a T0-220 resistor instead.? It doesn＊t get warm, but I＊m wary of the physical characteristics of the SMD resistor.? That modification is an easy one.? I also have a hole in the middle of the board that is too small to get at the screw that holds the temperature the bias compensation junction (a Darlington junction) to the heatsink near the two output transistors.? I also am using two 1N4148 diodes in the bias circuit where Oliver used a size I can barely see＃ so I think I＊m gonna have him change those to regular through-hole diodes.? Otherwise the amp is working extremely well (and has been for about 8 months).? I＊ll publish performance plots shortly. ? ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: Larry Acklin <acklin@...>
Sent: Saturday, December 21, 2024 4:54 PM
To: [email protected]
Cc: K9HZ <bill@...>
Subject: Re: [AmateurRadioBuilders] V12 first try? Hook the antenna right to the rf board as a sanity check. Then move back to the next connection, work towards?the antenna RF connection. I had a loose SMA cable and or chassis connection that gave me trouble in my early spin up stages.? ? Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote: Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
I have a complete V11 rig running?Greg's code. Rock solid. Runs 24/7. If there is a sand pit I fell in it.? Debugging the display was the hardest- that's why I jump into the threads about that.?
And after 40+ years (retired) in IT services of all?aspects I think like a computer geek.?
Larry KB3CUF?
What stage of building are you at Larry? ? ? As for me＃ ? I＊m spending the day running some final tests on the 100W module.? I can see I need to use a different current measurement resistor on the board.? It＊s a 3W 0.005 ohm SMD resistor and that will be a problem if the board flexes (cracks).? I think I＊ll use a T0-220 resistor instead.? It doesn＊t get warm, but I＊m wary of the physical characteristics of the SMD resistor.? That modification is an easy one.? I also have a hole in the middle of the board that is too small to get at the screw that holds the temperature the bias compensation junction (a Darlington junction) to the heatsink near the two output transistors.? I also am using two 1N4148 diodes in the bias circuit where Oliver used a size I can barely see＃ so I think I＊m gonna have him change those to regular through-hole diodes.? Otherwise the amp is working extremely well (and has been for about 8 months).? I＊ll publish performance plots shortly. ? ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? ? Hook the antenna right to the rf board as a sanity check. Then move back to the next connection, work towards?the antenna RF connection. I had a loose SMA cable and or chassis connection that gave me trouble in my early spin up stages.? ? Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote: Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
OK, I have receive. I patched around the BPF.
- Jerry, KF6VB
toggle quoted message
Show quoted text
On 2024-12-21 14:53, Larry Acklin via groups.io wrote: Hook the antenna right to the rf board as a sanity check. Then move
back to the next connection, work towards the antenna RF connection. I
had a loose SMA cable and or chassis connection that gave me trouble
in my early spin up stages.
Larry
KB3CUF
On Sat, Dec 21, 2024 at 5:37?PM jerry-KF6VB via groups.io [2]
<jerry@...> wrote:
Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote:
Here is a link to the spreadsheet with all of the I2C assignments
in
the T41＃
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: www.VillaGrandPiton.com [1] [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main -
BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not
found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
------
[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
Links:
------
[1]
[2]
[3] /g/AmateurRadioBuilders/message/5620
[4] /mt/110236199/243852
[5] /g/AmateurRadioBuilders/post
[6] /g/AmateurRadioBuilders/editsub/243852
[7]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
|
Love it! ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Larry Acklin via groups.io
Sent: Saturday, December 21, 2024 5:13 PM
To: [email protected]
Subject: Re: [AmateurRadioBuilders] V12 first try? I have a complete V11 rig running?Greg's code. Rock solid. Runs 24/7. If there is a sand pit I fell in it.? Debugging the display was the hardest- that's why I jump into the threads about that.? And after 40+ years (retired) in IT services of all?aspects I think like a computer geek.? ? What stage of building are you at Larry? ? ? As for me＃ ? I＊m spending the day running some final tests on the 100W module.? I can see I need to use a different current measurement resistor on the board.? It＊s a 3W 0.005 ohm SMD resistor and that will be a problem if the board flexes (cracks).? I think I＊ll use a T0-220 resistor instead.? It doesn＊t get warm, but I＊m wary of the physical characteristics of the SMD resistor.? That modification is an easy one.? I also have a hole in the middle of the board that is too small to get at the screw that holds the temperature the bias compensation junction (a Darlington junction) to the heatsink near the two output transistors.? I also am using two 1N4148 diodes in the bias circuit where Oliver used a size I can barely see＃ so I think I＊m gonna have him change those to regular through-hole diodes.? Otherwise the amp is working extremely well (and has been for about 8 months).? I＊ll publish performance plots shortly. ? ? ? 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: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? ? Hook the antenna right to the rf board as a sanity check. Then move back to the next connection, work towards?the antenna RF connection. I had a loose SMA cable and or chassis connection that gave me trouble in my early spin up stages.? ? Continuing...
I soldered JP2 on the LPF controller card, and fabricated a
daisy-chain
cable for the "BANDS" connectors - mainboard->BPF->LPF. Now the BIT
test
passes. Yay!
The screen displays a normal T41 page, and relays click satisfyingly
when
I change bands.
But there is no receive yet. Just noise from the video card.
- Jerry, KF6VB
On 2024-12-21 14:29, K9HZ wrote: Here is a link to the spreadsheet with all of the I2C assignments in
the T41＃
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: [1]
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 jerry-KF6VB
SENT: Saturday, December 21, 2024 3:59 PM
TO: [email protected]
SUBJECT: [AmateurRadioBuilders] V12 first try
OK,
I got all the boards in place. Order left to right: RF - Main - BPF
- LPF - LPFControl.
Haven't fabricated quite all the cables yet. The LPF control board
really needs
straight SMA connectors, and I just ordered a bunch of right-angle
ones.
Straight ones are on order to arrive tomorrow.
In the meantime, I powered it up. No smoke came out. The display
displays normally. The BIT test complains that the BPF was not found,
and also the
I/O expander on the LPF.
The BPF - that's simple - no ribbon cable there yet. Does it daisy
chain mainboard - BPF - LPF? The missing expander on the LPF - I
believe I need to solder one or more jumpers on the LPF controller
card.
I'm guessing just JP2, yielding 101 or "5".
- Jerry, KF6VB
Links:
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[1]
[2] /g/AmateurRadioBuilders/message/5618
[3] /mt/110236199/243852
[4] /g/AmateurRadioBuilders/post
[5] /g/AmateurRadioBuilders/editsub/243852
[6]
/g/AmateurRadioBuilders/leave/11522011/243852/920863695/xyzzy
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K9HZ