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FS wooden box for radio project?
Hello all,
I have an old piece of test equipment, in a nice wooden box with a removable hinged lid. It is a Beckman RC16B2 conductivity bridge from a local SK estate. Maybe someone wants to build a
Hello all,
I have an old piece of test equipment, in a nice wooden box with a removable hinged lid. It is a Beckman RC16B2 conductivity bridge from a local SK estate. Maybe someone wants to build a
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By
Paul Goemans
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#22200
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Herb,
Happy you found the problem. Assume that it was solder at R3 or at the regen and not a broken land on the board.
Almost every problem have had with a kit has been a missing or poor soldered
Herb,
Happy you found the problem. Assume that it was solder at R3 or at the regen and not a broken land on the board.
Almost every problem have had with a kit has been a missing or poor soldered
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By
Curt
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#22199
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Herb,
Wonderful! glad you have found the problem, you will have a lot of fun with the radio, I sure enjoy mine.
73, Curt KB5JO
Herb,
Wonderful! glad you have found the problem, you will have a lot of fun with the radio, I sure enjoy mine.
73, Curt KB5JO
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By
Curt
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#22198
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Upcoming Event: Wednesday Evening 40 and 80 meter Nets - Wed, 06/03/2020 20:00-21:00
#cal-reminder
Reminder: Wednesday Evening 40 and 80 meter Nets
When: Wednesday, 3 June 2020, 20:00 to 21:00, (GMT-05:00) America/Chicago
Where:40 and 80 Meters
View Event
Organizer:
Reminder: Wednesday Evening 40 and 80 meter Nets
When: Wednesday, 3 June 2020, 20:00 to 21:00, (GMT-05:00) America/Chicago
Where:40 and 80 Meters
View Event
Organizer:
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By
main@4SQRP.groups.io Calendar <main@...>
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#22197
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Hello Jim
Thanks for your excellent troubleshooting support
on this problem.
Very kind of you to jump in.
Very 73
Stay Safe
Johnny ACØBQ
--
Check out the 4SQRP website at 4sqrp.com
Hello Jim
Thanks for your excellent troubleshooting support
on this problem.
Very kind of you to jump in.
Very 73
Stay Safe
Johnny ACØBQ
--
Check out the 4SQRP website at 4sqrp.com
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By
Johnny AC0BQ
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#22196
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Congrats, Herb! Good catch.
As a fan of the British mysteries, I love a good detective story where the perpetrator is discovered by good old fashioned sleuthing. Let the evidence point the way.
BTW
Congrats, Herb! Good catch.
As a fan of the British mysteries, I love a good detective story where the perpetrator is discovered by good old fashioned sleuthing. Let the evidence point the way.
BTW
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By
Jim, N5IB
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#22195
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Hi Jerry,
I just found out that the connection between the regen pot and R3 was open. I ran a wire between them and the set came alive. Thanks so much for your help. I really appreciate it!
Herb
Hi Jerry,
I just found out that the connection between the regen pot and R3 was open. I ran a wire between them and the set came alive. Thanks so much for your help. I really appreciate it!
Herb
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By
Herb Parsons <radioherb@...>
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#22194
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Hi John,
I just found out that the connection between the regen pot and R3 was open. I ran a wire between them and the set came alive. Thanks so much for your help.
Herb
Hi John,
I just found out that the connection between the regen pot and R3 was open. I ran a wire between them and the set came alive. Thanks so much for your help.
Herb
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By
Herb Parsons <radioherb@...>
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#22193
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Hi Curt,
My problem is solved. While checking voltages on R3 and the regen pot, I found 0 volts on R3. The connection between R3 and the pot was open! I ran a wire from the pot to R3 and the set came
Hi Curt,
My problem is solved. While checking voltages on R3 and the regen pot, I found 0 volts on R3. The connection between R3 and the pot was open! I ran a wire from the pot to R3 and the set came
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By
Herb Parsons <radioherb@...>
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#22192
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Re: problem with my 4SQRP Ozark Patrol Radio (Fixed!)
Hi Jim,
Thank you for pointing me to the problem. When I got to #4 voltage check on your list, I found 0 volts on R3. I found the connection from R3 to the pot was open! As soon as I connected a wire
Hi Jim,
Thank you for pointing me to the problem. When I got to #4 voltage check on your list, I found 0 volts on R3. I found the connection from R3 to the pot was open! As soon as I connected a wire
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By
Herb Parsons <radioherb@...>
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#22191
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Re: problem with my 4SQRP Ozark Patrol Radio
Just for info, my radio (which works) has following readings
Curt KB5JO
Just for info, my radio (which works) has following readings
Curt KB5JO
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By
Curt
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#22190
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Re: 75A - Kits in the 190 Serial Number Range - Do They Need The Modification?
What about removing R47 and the first hundred kits?
What about removing R47 and the first hundred kits?
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By
ohwenzelph
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#22189
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Re: problem with my 4SQRP Ozark Patrol Radio
Hi Herb,
I'm presuming you've fixed the earlier problem of low voltage on the Q3 collector?
Before replacing any more parts, do a little voltage detective work for us. This will give some clues as
Hi Herb,
I'm presuming you've fixed the earlier problem of low voltage on the Q3 collector?
Before replacing any more parts, do a little voltage detective work for us. This will give some clues as
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By
Jim, N5IB
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#22188
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locked
#ADMIN Periodic Reminder About Group Rules
#ADMIN
PERIODIC REMINDER
The 4SQRP Mailing List exists for several purposes:
To encourage the discussion of QRP activities and techniques, especially those that relate to 4SQRP events.
To provide support
PERIODIC REMINDER
The 4SQRP Mailing List exists for several purposes:
To encourage the discussion of QRP activities and techniques, especially those that relate to 4SQRP events.
To provide support
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By
main@4SQRP.groups.io Group Moderators <main@...>
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#22187
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Re: problem with my 4SQRP Ozark Patrol Radio
Just thinking out loud here, but what if both D2 and D3 were installed backwards? I don't have an Ozark Patrol. I'm just relying on Curt's observations.
72,
John, AA0VE
Just thinking out loud here, but what if both D2 and D3 were installed backwards? I don't have an Ozark Patrol. I'm just relying on Curt's observations.
72,
John, AA0VE
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By
John Lonigro
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#22186
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Re: problem with my 4SQRP Ozark Patrol Radio
Herb
No voltage on Q1 base implies short to ground in that circuit. Absent an internal B-E short, the voltage should be at least 1/2V across D2 and D3. Since you have replaced that transistor, the
Herb
No voltage on Q1 base implies short to ground in that circuit. Absent an internal B-E short, the voltage should be at least 1/2V across D2 and D3. Since you have replaced that transistor, the
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By
Curt
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#22185
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Re: 75A - Kits in the 190 Serial Number Range - Do They Need The Modification?
Only the original N75 need the mod. All N75a include the mod. Serial number numbers 1-100 are N75. Serial number 101 and above are N75a. You are good to go. de wb0yfl
Only the original N75 need the mod. All N75a include the mod. Serial number numbers 1-100 are N75. Serial number 101 and above are N75a. You are good to go. de wb0yfl
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By
JOE CULWELL
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#22184
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Re: problem with my 4SQRP Ozark Patrol Radio
Hi Herb,
The fact that it squeals seems to indicate the audio section is at least working. Not quite sure why voltages around Q1 are not right, so for some reason the problem seems to gravitate there.
Hi Herb,
The fact that it squeals seems to indicate the audio section is at least working. Not quite sure why voltages around Q1 are not right, so for some reason the problem seems to gravitate there.
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By
Jerome Wysocki
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#22183
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Re: problem with my 4SQRP Ozark Patrol Radio
Curt,
I get nothing from the speaker except slight noise as you turn the volume control up and down. If I touch my fingers from Q1 collector to Q3 collector, I get a loud squeal from the speaker. I
Curt,
I get nothing from the speaker except slight noise as you turn the volume control up and down. If I touch my fingers from Q1 collector to Q3 collector, I get a loud squeal from the speaker. I
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By
Herb Parsons <radioherb@...>
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#22182
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Re: How much did Hilltopper kits cost?
$90 plus ship
72 - Ron - AG1P
$90 plus ship
72 - Ron - AG1P
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By
AG1P Ron
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#22181
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