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Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT - Friday, 11 September 2020
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Re: Ozark Patrol Audio Transformer and Jack
Jerry, thanks for the hint. I gave the 2n2222 a try and now get signals. A big step closer to finishing. Now, I am going to rebuild the regeneration coil per Dave Cripe's suggestion. I think that may help some because the regeneration is screwy. I am listening to 80m hams at the moment. No matter where I place the regeneration control, I get no change in volume. It is as if regeneration is not needed. There is no regeneration point on the dial at all. Could it be this quiet? My only other experience is with the Ocean Hopper. You could tell when you reached "the point". Any suggestions anyone? Thanks, Dale KS4NS
On Mon, Aug 24, 2020 at 1:35 PM Jerome Wysocki <jeromewysocki48@...> wrote: I found that a generic 2N2222 worked identically well to the Q1 transistor originally in this receiver. Try that, if you have one handy. Dale Hardin Elberta, AL --
Dale Hardin, KS4NS Elberta, AL
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Updated Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Updated Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Updated Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Updated Event: K0B BRUTUS BASH SPECIAL OPERATING EVENT
#cal-invite
main@4SQRP.groups.io Calendar <main@...>
K0B BRUTUS BASH SPECIAL OPERATING EVENT When: Where: Organizer: ROBERT McCLENDON N0YJ e1dslr@... Description:
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Wednesday Evening 40 and 80 meter Nets - Wed, 08/26/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 26 August 2020, 20:00 to 21:00, (GMT-05:00) America/Chicago Where:40 and 80 Meters Organizer: jomatlock@... Description: The 40 Meter Net will be at 8:00 pm central time on 7.122 +-. QRM
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Re: Ozark Patrol Audio Transformer and Jack
I found that a generic 2N2222 worked identically well to the Q1 transistor originally in this receiver. Try that, if you have one handy.
On a slightly different related topic, has anyone ever tried substitution of an FET (such as an MPF-102, or equivalent type) for Q1 in this radio? If so, how was it wired, and how well did it work? ... Jerry Wysocki, KC8JXE
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Re: Ozark Patrol Audio Transformer and Jack
Curt
You can check if the transistor is fubar using dvm on diode.
Curt KB5JO
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Re: Ozark Patrol Audio Transformer and Jack
Curt, I checked the coil sense---ok. I even removed the coil and rechecked the tinned ends and replaced the secondary "winding". Dave Cripe suggested privately that I should just rebuild the entire coil to make sure. However, I think there is a problem with the new Q1 I installed, so I have ordered more as replacements. Q1 may be a fake Chinese transistor as it doesn't have gold leads. So, for now, this project is set aside waiting parts.
-- Dale Hardin, KS4NS Elberta, AL
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Re: Ozark Patrol Audio Transformer and Jack
Gwen, I replaced the gimmick cap with a variable cap and fixed cap in series to give me about 0-5pf.
-- Dale Hardin, KS4NS Elberta, AL
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Re: Ozark Patrol Audio Transformer and Jack
Curt
Sometimes regeneration doesn't work because the sense of the coil wilndings is wrong. Be sure the coil looks line the one in the assembly drawing. There aren't many parts in the regeneration circuit.
Curt KB5JO
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Re: My addition to Hilltopper rig
Dave Benson
Nice idea, Paul! 73- Dave, K1SWL
On Sun, Aug 23, 2020 at 4:02 PM Paul Goemans <wa9pwp@...> wrote:
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Re: Ozark Patrol Audio Transformer and Jack
One thing that might be affecting regeneration is the "gimmick" capacitor C12. You might need more twists or fewer twists. I found it really changes the regeneration level a LOT. -=-=-=-=-=-=-=-=- 73, Gwen, NG3P
On Sun, Aug 23, 2020 at 11:22 AM Dale Hardin <joe.dale.hardin@...> wrote:
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My addition to Hilltopper rig
Paul Goemans
Greetings!
I built my Hilltopper 40 way back when, and built in an additional
feature. The rig has no power switch, so I added a “power on” LED. That way I
won’t forget to disconnect power to the rig if I walk away for awhile. Useful if
you are running battery power!
See pictures. The “window” square on the top panel is a great spot for the
LED. I drilled half way through from the back side to clear the metallization.
You can drill all the way through if you wish. Use whatever color LED you want;,
I used a green one from my junk box. Mount LED on the cathode of reverse
polarity diode D1 so it just reaches the hole you drilled. Add suitable dropping
resistor to give you desired brightness/ current. I used a 3.3K 1/4 watt
resistor. The left side of the DC in jack is a convenient ground point. See
second photo.
  Paul
Goemans WA9PWP Stoughton, WI
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Re: Bayou Jumper (unbuilt)
The Bayou Jumper is SOLD and on it's way to the new owner. Thanks to everyone for the many responses. Bob Groh, WA2CKY
On Sat, Aug 22, 2020 at 2:30 PM Bob Groh <bob.groh@...> wrote:
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Re: Ozark Patrol Audio Transformer and Jack
Thanks Johnny. I think he is already following this incident. BTW, this is the rig that a previous ham gave up on in frustration. You might remember his posts. I decided to take on the troubleshooting even though I'm not very good at it. I hope to make it a good receiver for my grandkids. I got started in ham radio with an Ocean Hopper.
On Sun, Aug 23, 2020 at 9:58 AM Johnny AC0BQ <jomatlock@...> wrote:
Dale Hardin Elberta, AL --
Dale Hardin, KS4NS Elberta, AL
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Re: Ozark Patrol Audio Transformer and Jack
Gm Dale See if you can get in touch with Dave Cripe, NM0S. His email is NM0S@... He designed this little bugger, I bet he can get you kick started. It might be best to email him direct. Be patient, he is pretty busy. 73 Johnny ACØBQ
On Sun, Aug 23, 2020 at 9:52 AM Dale Hardin <joe.dale.hardin@...> wrote:
--
Check out the 4SQRP website at 4sqrp.com
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Re: Ozark Patrol Audio Transformer and Jack
I ran the troubleshooting voltages in the Assembly Manual. The battery voltage iws 8.434v. The following voltages are in list order: 0.000 0.889 7.849 0.615 3.454 2.772 4.815 Looks like the voltages on the collectors of Q1 and Q3 are high. I have gone through the soldering on the regenerative circuit and touched up each one. Still no regeneration. I replaced D1, but don't have (or can't find) 1N914 diodes. Haven't pulled and tested them yet. Any suggestions? Regards, Dlae
On Sat, Aug 22, 2020 at 8:07 PM Dale Hardin via groups.io <joe.dale.hardin=gmail.com@groups.io> wrote: OK, got the little amp installed and working. After replacing all the transistors, I hooked up my signal injector to the antenna end and got a tone out of the speaker. However, I do not have any regeneration, so I hooked it up to my antenna. Still no joy. Absolotutely no regeneration. I have the batteries out being recharged so I can get some voltage measurements. I would appreciate it if one of you more knowedgable members would give me a list of tests to carry out to see what the problem is. BTW, I removed, checked for good, and replaced the coil, so I'm comfortable it is ok. The voltage changes on the regen pot when turned, so the pot is ok. Where do I start looking now? Dale Dale Hardin Elberta, AL --
Dale Hardin, KS4NS Elberta, AL
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