Date   

Re: Bayou Jumper?

Bob Parr
 

Where are JP 2 and 3? I only see JP1 on the manual. I know mine is a rev A but I am not sure if it is an A(c).

Bob

The Soup'er does NOT provide any DC isolation on the speaker lines.
So you still need to make sure that neither audio output lead has a
DC path to ground, as you saw in the Appendix of the manual.

If you have one of the newest, rev A(c), circuit boards, there
are some extra pads provided (JP2 and JP3) where the appropriate
blocking capacitor(s) can be mounted. Then you cut the exposed
trace(s) between the pad(s) on the bottom side of the board to put
the cap(s) into the circuit.

A powered speaker with a self-contained battery supply can be used
without needing a DC block. But if either of the external speaker
connections has a DC path to the same ground as the BJ (like back
through a wall wart power supply) it would short out and damage
the audio chip.

N5IB


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Re: BJ build - TX Xtal doesn't swing

Jeff Fein
 

I am sure some of us like me just assumed we blew it and replaced it on our own. They are not expensive and in my case I could get them much faster locally.
Cheers Jeff
Vk3GMO

-----Original Message-----
From: main@4SQRP.groups.io [mailto:main@4SQRP.groups.io] On Behalf Of Raimund Reh
Sent: Tuesday, May 1, 2018 11:42 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] BJ build - TX Xtal doesn't swing

Hi Dave -no it's not your brain...
and I did it my way... not like Franky but take a look at the fotos I add...
I also think we are not alone with this expereance of none oscillating Q4 and we wonder why none is asking...
... cheers to you all guys - Ray


Re: Wednesday Evening 40 and 80 meter Nets - Wed, 5/2/18 8:00pm-9:00pm #cal-reminder

ussv dharma
 

I will be there...boob tube be dammed


If you don't change direction you WILL arrive exactly where you're headed!!
 
MSGT. Susan Meckley, USA (Ret.)
W7KFI-5  & AFZ4SM
 

--------------------------------------------

On Tue, 5/1/18, Michael McEwen <michael.t.mcewen@gmail.com> wrote:

Subject: Re: [4SQRP] Wednesday Evening 40 and 80 meter Nets - Wed, 5/2/18 8:00pm-9:00pm #cal-reminder
To: main@4sqrp.groups.io
Date: Tuesday, May 1, 2018, 1:36 PM

I'm trying guys...
can't get my antenna up  due to physical issues. Have
40 EF wire... what is the best height for an inverted V
?On Mon, Apr
30, 2018, 8:00 PM main@4SQRP.groups.io
Calendar <main@4sqrp.groups.io>
wrote:Reminder:
Wednesday Evening 40 and 80 meter Nets

When:

Wednesday, 2 May 2018
8:00pm to 9:00pm

(GMT-05:00) America/Chicago




Where:
40 and 80 Meters



Description:
The 40 Meter Net will be at 8:00 pm central or 0100 UTC on
7.122 +-.NCS will be Bill KV6Z.Wednesday
evening 80 Meter CW Net. will be at 0130 UTC Thursday
(8:30PM Central Time Wednesday).  The net will be
called on 3.564 MHz +/- QRM. Net control
operators are Johnny AC0BQ or Paul N0NBD.



View
Event.


Re: Wednesday Evening 40 and 80 meter Nets - Wed, 5/2/18 8:00pm-9:00pm #cal-reminder

Mlike McEwen
 

I'm trying guys... can't get my antenna up  due to physical issues. Have 40 EF wire... what is the best height for an inverted V ?


On Mon, Apr 30, 2018, 8:00 PM main@4SQRP.groups.io Calendar <main@4sqrp.groups.io> wrote:

Reminder:
Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 2 May 2018
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Description:
The 40 Meter Net will be at 8:00 pm central or 0100 UTC on 7.122 +-.
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at 0130 UTC Thursday (8:30PM Central Time Wednesday). 
The net will be called on 3.564 MHz +/- QRM.



Net control operators are Johnny AC0BQ or Paul N0NBD.

View Event.


Re: BJ build - TX Xtal doesn't swing

Jess Gypin
 

It has been brought up in the group in the last week or so.

On May 1, 2018, at 7:41 AM, Raimund Reh <raimund.reh@web.de> wrote:

Hi Dave -no it's not your brain...
and I did it my way... not like Franky but take a look at the fotos I add...
I also think we are not alone with this expereance of none oscillating Q4 and we wonder why none is asking...
... cheers to you all guys - Ray



<IMG_20180501_WA0001.jpg>
<IMG_20180501_WA0009.jpg>


Re: BJ build - TX Xtal doesn't swing

Jess None
 

Send an email to the person that kitted the BJ. They will send you a replacement. Email address is on the website.

On May 1, 2018, at 12:14 AM, Raimund Reh <raimund.reh@web.de> wrote:

" #16937
..
I'm pretty sure that IRF-510 transistors that are marked ""Y64K AP" work reasonably well at Q4, but those marked "618 P 77 WS" would kill the oscillator."

So my IRF-510 is(!) marked "618 P 77 WS" - I cut him out and Q4 oscillates. Wow!
Unfortunately I haven't an subst. IRF-510 e.g. Mouser #844-IRF510PBF factory marked "N77K BJ") on hand.
so how?

Thank you all for kind assistance
cheers - Ray



Re: BJ build - TX Xtal doesn't swing

Raimund Reh
 

Hi Dave -no it's not your brain...
and I did it my way... not like Franky but take a look at the fotos I add...
I also think we are not alone with this expereance of none oscillating Q4 and we wonder why none is asking...
... cheers to you all guys - Ray


Re: BJ build - TX Xtal doesn't swing

David Wilcox
 

Guys,

This is just another instance of the wrong part (either in the kit or from your junque box).  I know it takes longer but with the low cost of those Chinese part testers I am now testing each part before installing.  Also it slows me down enough to rethink each part (why and what for) as I install it.

It is surprising how reading the same instructions over and over again, and on different days, how much the meaning changes.  Maybe is is just my old brain but going slow makes for a better build.

Dave K8WPE

On Apr 30, 2018, at 3:58 PM, Richard Dickerson <richard.dickerson@...> wrote:

Check tank capacitor. I had wrong value and mine wouldn't oscillate 


Re: BJ build - TX Xtal doesn't swing

Raimund Reh
 

" #16937
..
I'm pretty sure that IRF-510 transistors that are marked ""Y64K AP" work reasonably well at Q4, but those marked "618 P 77 WS" would kill the oscillator."

So my IRF-510 is(!) marked "618 P 77 WS" - I cut him out and Q4 oscillates. Wow!
Unfortunately I haven't an subst. IRF-510 e.g. Mouser #844-IRF510PBF factory marked "N77K BJ") on hand.
so how?

Thank you all for kind assistance
cheers - Ray


Re: Bayou Jumper?

Jim, N5IB
 

That'll be the 22 pF cap for use at C31 if needed.
The "220" means 22 x (10 to the power zero) = 22 x 1 = 22 pF

Much to small a capacitance to use for the DC block at the audio output. That will have to be a few micro farads, at least.

N5IB


Re: Bayou Jumper?

Bob Parr
 

Yes the back side was 220 A1K.

Can these be used for the DC blocking?

Bob
KG5GTE

The cap marked "10" is most likely the 10 pF cap included in the
Bayou Jumper kit in case you needed to use it at C20a to lower the
receive tuning range.

There would have also been a 22 pF cap to be used if needed at C31.

The "719" doesn't seem like a standard capacitor marking. Anything
on the other side of it?

N5IB


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Wednesday Evening 40 and 80 meter Nets - Wed, 5/2/18 8:00pm-9:00pm #cal-reminder

main@4SQRP.groups.io Calendar <main@...>
 

Reminder:
Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 2 May 2018
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Description:
The 40 Meter Net will be at 8:00 pm central or 0100 UTC on 7.122 +-.
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at 0130 UTC Thursday (8:30PM Central Time Wednesday). 
The net will be called on 3.564 MHz +/- QRM.



Net control operators are Johnny AC0BQ or Paul N0NBD.

View Event.


Re: Bayou Jumper?

Jim, N5IB
 

The cap marked "10" is most likely the 10 pF cap included in the Bayou Jumper kit in case you needed to use it at C20a to lower the receive tuning range.

There would have also been a 22 pF cap to be used if needed at C31.

The "719" doesn't seem like a standard capacitor marking. Anything on the other side of it?

N5IB


Re: Bayou Jumper?

Bob Parr
 

You guys are so awesome. I love this kit more and more every day. Okay I have two caps that were leftover or found from another project. They are both tiny brown/tan caps. One says 719 then under that RMJ (may be AMJ) The other 10. Can either or both of these be used?

Bob
KG5GTE

The Soup'er does NOT provide any DC isolation on the speaker lines.
So you still need to make sure that neither audio output lead has a
DC path to ground, as you saw in the Appendix of the manual.

If you have one of the newest, rev A(c), circuit boards, there
are some extra pads provided (JP2 and JP3) where the appropriate
blocking capacitor(s) can be mounted. Then you cut the exposed
trace(s) between the pad(s) on the bottom side of the board to put
the cap(s) into the circuit.

A powered speaker with a self-contained battery supply can be used
without needing a DC block. But if either of the external speaker
connections has a DC path to the same ground as the BJ (like back
through a wall wart power supply) it would short out and damage
the audio chip.

N5IB


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Topic: https://groups.io/mt/18106835/795296 New Topic:
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Re: BJ build - TX Xtal doesn't swing

Jim, N5IB
 

Check the information in message #16937 on this forum...

N5IB


Re: Cricket 30 loud buzzing

Jess Gypin
 

I’ll do some more testing. I have several other QRP radios that I run on the same antennas as well as the BJ and none of the others exhibit this symptoms.

On Apr 30, 2018, at 12:38 PM, WA0ITP <wa0itp@...> wrote:

Jess, Sri I came late to the conversation.

Does the humm/buzz occur when running on a battery? 
That 60 cycle stuff could be riding in on your antenna too.  If so it's a neighborhood problem. 

In any event, it sounds like you might be a candidate for the BuzzKill  http://www.4sqrp.com/buzzkill.php
72 WAØITP
I love this radio stuff.
Back to the bench, Winter is too valuable to waste.
www.wa0itp.com
www.4sqrp.com
On 4/30/2018 1:06 PM, Jess None via Groups.Io wrote:
Gotcha will try

On Apr 30, 2018, at 11:06 AM, Don Pitchford <donw9ebk@...> wrote:

Jess,
I would start by looking at the output of the audio stage with your scope and see if an identifiable pattern shows up. Then move your hand around the board to see if shielding a certain point on the board affects the buzz. I have a LCD TV near the shack that generates a 12kHz pulse that can mess with receivers all the up through 10 meters. I have some Crickets and Pixies that suffer issues similar to what you describe if that TV is plugged in. A well shielded and grounded case fixed part of the problem,  and unplugging the TV fixed the rest.

On Mon, Apr 30, 2018, 10:43 AM Jess Gypin <ontarget1911@...> wrote:
Well,
I verified all components and placement on the board confirmed that all solder joints are good and no solder bridges or shorts.
I have confirmed that when the unit is powered up the oscillator is running. I get .9 or so Watts out. Transmit tone is clean. So having said all that, where do you all think I should start looking? I have not verified operation of the audio chain. A lot of the radios that I have built with a similar problem was a bad ground somewhere. I have a 25 KHz scope (yeah I know not enough band width) and a couple of good DVMs.

Jess AE0CW




Re: BJ build - TX Xtal doesn't swing

Richard Dickerson
 

Check tank capacitor. I had wrong value and mine wouldn't oscillate 


Re: Cricket 30 loud buzzing

WA0ITP
 

Jess, Sri I came late to the conversation.

Does the humm/buzz occur when running on a battery? 
That 60 cycle stuff could be riding in on your antenna too.  If so it's a neighborhood problem. 

In any event, it sounds like you might be a candidate for the BuzzKill  http://www.4sqrp.com/buzzkill.php
72 WAØITP
I love this radio stuff.
Back to the bench, Winter is too valuable to waste.
www.wa0itp.com
www.4sqrp.com
On 4/30/2018 1:06 PM, Jess None via Groups.Io wrote:

Gotcha will try

On Apr 30, 2018, at 11:06 AM, Don Pitchford <donw9ebk@...> wrote:

Jess,
I would start by looking at the output of the audio stage with your scope and see if an identifiable pattern shows up. Then move your hand around the board to see if shielding a certain point on the board affects the buzz. I have a LCD TV near the shack that generates a 12kHz pulse that can mess with receivers all the up through 10 meters. I have some Crickets and Pixies that suffer issues similar to what you describe if that TV is plugged in. A well shielded and grounded case fixed part of the problem,  and unplugging the TV fixed the rest.

On Mon, Apr 30, 2018, 10:43 AM Jess Gypin <ontarget1911@...> wrote:
Well,
I verified all components and placement on the board confirmed that all solder joints are good and no solder bridges or shorts.
I have confirmed that when the unit is powered up the oscillator is running. I get .9 or so Watts out. Transmit tone is clean. So having said all that, where do you all think I should start looking? I have not verified operation of the audio chain. A lot of the radios that I have built with a similar problem was a bad ground somewhere. I have a 25 KHz scope (yeah I know not enough band width) and a couple of good DVMs.

Jess AE0CW




Re: Cricket 30 loud buzzing

Jess None
 

Gotcha will try

On Apr 30, 2018, at 11:06 AM, Don Pitchford <donw9ebk@...> wrote:

Jess,
I would start by looking at the output of the audio stage with your scope and see if an identifiable pattern shows up. Then move your hand around the board to see if shielding a certain point on the board affects the buzz. I have a LCD TV near the shack that generates a 12kHz pulse that can mess with receivers all the up through 10 meters. I have some Crickets and Pixies that suffer issues similar to what you describe if that TV is plugged in. A well shielded and grounded case fixed part of the problem,  and unplugging the TV fixed the rest.

On Mon, Apr 30, 2018, 10:43 AM Jess Gypin <ontarget1911@...> wrote:
Well,
I verified all components and placement on the board confirmed that all solder joints are good and no solder bridges or shorts.
I have confirmed that when the unit is powered up the oscillator is running. I get .9 or so Watts out. Transmit tone is clean. So having said all that, where do you all think I should start looking? I have not verified operation of the audio chain. A lot of the radios that I have built with a similar problem was a bad ground somewhere. I have a 25 KHz scope (yeah I know not enough band width) and a couple of good DVMs.

Jess AE0CW



Re: Cricket 30 loud buzzing

Don, W9EBK
 

Jess,
I would start by looking at the output of the audio stage with your scope and see if an identifiable pattern shows up. Then move your hand around the board to see if shielding a certain point on the board affects the buzz. I have a LCD TV near the shack that generates a 12kHz pulse that can mess with receivers all the up through 10 meters. I have some Crickets and Pixies that suffer issues similar to what you describe if that TV is plugged in. A well shielded and grounded case fixed part of the problem,  and unplugging the TV fixed the rest.

On Mon, Apr 30, 2018, 10:43 AM Jess Gypin <ontarget1911@...> wrote:
Well,
I verified all components and placement on the board confirmed that all solder joints are good and no solder bridges or shorts.
I have confirmed that when the unit is powered up the oscillator is running. I get .9 or so Watts out. Transmit tone is clean. So having said all that, where do you all think I should start looking? I have not verified operation of the audio chain. A lot of the radios that I have built with a similar problem was a bad ground somewhere. I have a 25 KHz scope (yeah I know not enough band width) and a couple of good DVMs.

Jess AE0CW


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