Date   

Re: Newbie Issues

N7RKC, Mike
 

Hi,  I replaced the MPF102 with a Fairchild NOS unit I had in my junk drawer.
I then replaced the C-20 Cap with a 0612 COG microwave grade cap.
The size of the cap in proximity to the other components has a large effect on sensitivity & the tuning range.
Receiver now works like a dream.  Minimum detectable signal is measured at 3uV with a HP 8648 Signal Gen.
Hopes that helps
//Michael Taylor - N7RKC  (Agent 076)


On Thursday, May 20, 2021, 12:52:53 PM MDT, Ed Gable <egable@...> wrote:


Hello.  New to group.  Just built a Blue Jumper and the TX took right off with 5W into 50 ohms. From reading past emails I too had trouble with Q2 oscillating.  I had a 40 year old NOS MPF102 in stock but that also brought no joy with tight feedback turns and  22 pf added.  Tried a U310 and it took right off and oscillated but I think it's too weak.  I hear a very weak hiss even though audio amplifier chain is working OK.  I have my TEK scope on TP1 and see a nice clean 7 Mhz signal at 0.25Vp-p signal that is smoothly controlled by REGEN.  Seems to me that might be too low.  I can hear FT8 signals.  Using a HP-8640 sig gen my minimal discernable is -70 dBm, kinda deaf!  The RX current draw is only 10 Ma, not the 23 Ma. as suggested.  Is that because there is no audio signal (hiss) in output stage?  The ATTEN control seems to work properly.  Is a U310 a good enough substitute for what seems to be a successful J310?  (I had a U310 in my junk box)  Any ideas from you experienced Jumpers out there?  73,  Ed Gable  K2MP


Newbie Issues

Ed Gable
 

Hello.  New to group.  Just built a Blue Jumper and the TX took right off with 5W into 50 ohms. From reading past emails I too had trouble with Q2 oscillating.  I had a 40 year old NOS MPF102 in stock but that also brought no joy with tight feedback turns and  22 pf added.  Tried a U310 and it took right off and oscillated but I think it's too weak.  I hear a very weak hiss even though audio amplifier chain is working OK.  I have my TEK scope on TP1 and see a nice clean 7 Mhz signal at 0.25Vp-p signal that is smoothly controlled by REGEN.  Seems to me that might be too low.  I can hear FT8 signals.  Using a HP-8640 sig gen my minimal discernable is -70 dBm, kinda deaf!  The RX current draw is only 10 Ma, not the 23 Ma. as suggested.  Is that because there is no audio signal (hiss) in output stage?  The ATTEN control seems to work properly.  Is a U310 a good enough substitute for what seems to be a successful J310?  (I had a U310 in my junk box)  Any ideas from you experienced Jumpers out there?  73,  Ed Gable  K2MP


Re: 40 and 80 Meter Net report

Johnny AC0BQ
 

Thanks Jim
I was trying to pull you out of heavy noise.
Thanks for the check in.
72 

On Thu, May 20, 2021 at 5:16 AM Jim Linsenbardt <jim.linsenbardt@...> wrote:
Hi Johnny,

Correction on my call. It's KD0WF. (As you said, lots of QRN plus I was using a side-swiper key and still getting used to it.  ;)

72's
Jim
KD0WF
Missouri
======

On Wednesday, May 19, 2021, Johnny AC0BQ <jomatlock@...> wrote:
> Good Eveing group 
> The condx were a little tough tonight. 
> lots of QRN on the bands. 
> Check in's were: 
> 40 Meters 
> NK8O CHARLES
> N4ELM DAVE 
> AA0B ROY 
> KD0WFD? JIM LOTS OF QRN 
> K8DDB MIKE 
> N5IB JIM /P 
> AC5WT BILL TX 
>
> 80 METERS 
> NK8O CHARLES DOUBLE 
> AA0B ROY 
> NOYJ BERT 
> Thanks everyone for the net and trying!! 
>
> --
> <https://ci6.googleusercontent.com/proxy/-rRrIB5yYaw8NmlCMGHKKGvDt_VlAIrx8MycqOcBZxgsxCHqK3H_2icZWnHBuI5b_PVeKTBExe5gr0i2nQR8y1exnj0toy04_s1RBB_3lHYUiU94z2jS5E7IgYxR59EgNaogKIzOzYIrzmAmzeMvh8TNzw=s0-d-e1-ft#https://drive.google.com/uc?id=0ByRdLpOVDcgZNmtPQTQwM0FROFI1WEZQSEVqakljcXM4aUgw&export=download>
> 72
> JOHNNY AC0BQ  ..
>
>

--
Check out the 4SQRP website at 4sqrp.com


Re: 40 and 80 Meter Net report

Jim Linsenbardt
 

Hi Johnny,

Correction on my call. It's KD0WF. (As you said, lots of QRN plus I was using a side-swiper key and still getting used to it.  ;)

72's
Jim
KD0WF
Missouri
======


On Wednesday, May 19, 2021, Johnny AC0BQ <jomatlock@...> wrote:
> Good Eveing group 
> The condx were a little tough tonight. 
> lots of QRN on the bands. 
> Check in's were: 
> 40 Meters 
> NK8O CHARLES
> N4ELM DAVE 
> AA0B ROY 
> KD0WFD? JIM LOTS OF QRN 
> K8DDB MIKE 
> N5IB JIM /P 
> AC5WT BILL TX 
>
> 80 METERS 
> NK8O CHARLES DOUBLE 
> AA0B ROY 
> NOYJ BERT 
> Thanks everyone for the net and trying!! 
>
> --
> <https://ci6.googleusercontent.com/proxy/-rRrIB5yYaw8NmlCMGHKKGvDt_VlAIrx8MycqOcBZxgsxCHqK3H_2icZWnHBuI5b_PVeKTBExe5gr0i2nQR8y1exnj0toy04_s1RBB_3lHYUiU94z2jS5E7IgYxR59EgNaogKIzOzYIrzmAmzeMvh8TNzw=s0-d-e1-ft#https://drive.google.com/uc?id=0ByRdLpOVDcgZNmtPQTQwM0FROFI1WEZQSEVqakljcXM4aUgw&export=download>
> 72
> JOHNNY AC0BQ  ..
>
>
> _._,_._,_
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Re: 40 and 80 Meter Net report

Johnny AC0BQ
 

Well 
I must eat crow!
I missed N4MJ GLENN.
Sorry about that Glenn
Johnny ACØBQ 

On Wed, May 19, 2021 at 9:06 PM Johnny AC0BQ via groups.io <jomatlock=gmail.com@groups.io> wrote:
Good Eveing group 
The condx were a little tough tonight. 
lots of QRN on the bands. 

Check in's were: 
40 Meters 
NK8O CHARLES
N4ELM DAVE 
AA0B ROY 
KD0WFD? JIM LOTS OF QRN 
K8DDB MIKE 
N5IB JIM /P 
AC5WT BILL TX 

80 METERS 
NK8O CHARLES DOUBLE 
AA0B ROY 
NOYJ BERT 

Thanks everyone for the net and trying!! 


--

72
JOHNNY AC0BQ  ..


--
Check out the 4SQRP website at 4sqrp.com


Re: 40 and 80 Meter Net report

Johnny AC0BQ
 

Thanks Charles
Good to hear you again.
72
Johnny ACØBQ 

On Wed, May 19, 2021 at 9:50 PM Charles W. Powell via groups.io <doctorcwp=yahoo.com@groups.io> wrote:

Your signal was great on 40m for a change, Johnny.  80m was a little more challenging.  I had the RF gain way down to put the signal above the noise level.  It worked well.

72,

Chas

On 5/19/21 9:05 PM, Johnny AC0BQ wrote:
Good Eveing group 
The condx were a little tough tonight. 
lots of QRN on the bands. 

Check in's were: 
40 Meters 
NK8O CHARLES
N4ELM DAVE 
AA0B ROY 
KD0WFD? JIM LOTS OF QRN 
K8DDB MIKE 
N5IB JIM /P 
AC5WT BILL TX 

80 METERS 
NK8O CHARLES DOUBLE 
AA0B ROY 
NOYJ BERT 

Thanks everyone for the net and trying!! 


--

72
JOHNNY AC0BQ  ..


--
Check out the 4SQRP website at 4sqrp.com


Delta Mike Romeo Net

Robert
 

Note to self: Don't leave the hotspot powered up in your vehicle that you use for mobile ops if the car is close enough to the house to connect to your wi-fi.

In spite of my operator error

N0RSR ROGER
WG5F ED
AC0BQ JOHNNY
N0MII JEFF
K0EMT BRYAN
WA9BNZ BILL
K0BOG CHUCK

73'S
BERT
N0YJ


Re: 40 and 80 Meter Net report

Charles W. Powell
 

Your signal was great on 40m for a change, Johnny.  80m was a little more challenging.  I had the RF gain way down to put the signal above the noise level.  It worked well.

72,

Chas

On 5/19/21 9:05 PM, Johnny AC0BQ wrote:
Good Eveing group 
The condx were a little tough tonight. 
lots of QRN on the bands. 

Check in's were: 
40 Meters 
NK8O CHARLES
N4ELM DAVE 
AA0B ROY 
KD0WFD? JIM LOTS OF QRN 
K8DDB MIKE 
N5IB JIM /P 
AC5WT BILL TX 

80 METERS 
NK8O CHARLES DOUBLE 
AA0B ROY 
NOYJ BERT 

Thanks everyone for the net and trying!! 


--

72
JOHNNY AC0BQ  ..



Re: 40 and 80 Meter Net report

John - KK4ITX
 

I heard Dave (ELM) 599 here in FL but nada on the NC.  After 20 mins went back to NAQCC Sprint.

May try from Maine next week.

John
KK4ITX



Click Here for Zephyrhills Area Amateur Radio Club
Many of life's failures are people who
did not realize how close they were to
success when they gave up.
       Thomas A. Edison     


On Wednesday, May 19, 2021, 10:06:22 PM EDT, Johnny AC0BQ <jomatlock@...> wrote:


Good Eveing group 
The condx were a little tough tonight. 
lots of QRN on the bands. 

Check in's were: 
40 Meters 
NK8O CHARLES
N4ELM DAVE 
AA0B ROY 
KD0WFD? JIM LOTS OF QRN 
K8DDB MIKE 
N5IB JIM /P 
AC5WT BILL TX 

80 METERS 
NK8O CHARLES DOUBLE 
AA0B ROY 
NOYJ BERT 

Thanks everyone for the net and trying!! 


--

72
JOHNNY AC0BQ  ..



40 and 80 Meter Net report

Johnny AC0BQ
 

Good Eveing group 
The condx were a little tough tonight. 
lots of QRN on the bands. 

Check in's were: 
40 Meters 
NK8O CHARLES
N4ELM DAVE 
AA0B ROY 
KD0WFD? JIM LOTS OF QRN 
K8DDB MIKE 
N5IB JIM /P 
AC5WT BILL TX 

80 METERS 
NK8O CHARLES DOUBLE 
AA0B ROY 
NOYJ BERT 

Thanks everyone for the net and trying!! 


--

72
JOHNNY AC0BQ  ..



Wednesday Evening 40 and 80 meter Nets - Wed, 05/19/2021 #cal-notice

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

Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 19 May 2021
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 (DST)  on 7.122 +-. QRM
NCS is WQ5RP/ACØBQ 

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday (DST). 



The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operator is Johnny ACØBQ 

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 02:00 UTC (9:00PM Central dst Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: Wednesday Evening 40 and 80 meter Nets - Wed, 05/19/2021 20:00-21:00 #cal-reminder

Johnny AC0BQ
 

Will do Jim!
I will be split and rock back and forth on RX after the first rush slows down.

We’re having lots of rain but I don’t think the lighting will be too bad?

Cu all there soon.
72
Johnny ACØBQ 

On Wed, May 19, 2021 at 5:23 PM Jim, N5IB <n5ib@...> wrote:
I'll be at the cabin in the woods in north Georgia and will try to check in with the prototype Bayou Jumper and a vertical dipole. My crystal puts me around 7121.7, so keep those filters WIDE  -  hi

Jim, N5IB





--
Check out the 4SQRP website at 4sqrp.com


Re: Wednesday Evening 40 and 80 meter Nets - Wed, 05/19/2021 20:00-21:00 #cal-reminder

Jim, N5IB
 

I'll be at the cabin in the woods in north Georgia and will try to check in with the prototype Bayou Jumper and a vertical dipole. My crystal puts me around 7121.7, so keep those filters WIDE - hi

Jim, N5IB


Wednesday Evening 40 and 80 meter Nets - Wed, 05/19/2021 20:00-21:00 #cal-reminder

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

Reminder: Wednesday Evening 40 and 80 meter Nets

When: Wednesday, 19 May 2021, 20:00 to 21:00, (GMT-05:00) America/Chicago

Where:40 and 80 Meters

View Event

Organizer: jomatlock@...

Description: The 40 Meter Net will be at 8:00 pm central time (DST)  on 7.122 +-. QRM
NCS is WQ5RP/ACØBQ 

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday (DST). 



The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operator is Johnny ACØBQ 

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 02:00 UTC (9:00PM Central dst Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: Problem with Tuner Kit but no help here

WA0ITP
 

GM Bryan and John,
You might try a resistor as the load rather than an antenna. Some antennas are difficult to match, but a dummy load resistor of 50 to 200 ohms or so should match up nicely.

GL and let us know how it goes,  WA0ITP

On Tue, May 18, 2021 at 8:01 PM Jg <jgoodsell@...> wrote:
My experience having finished this kit a week or so back.  

The tuning seems quite finicky (or precise).  The initial dimming of the red LED can be very slight and easy to miss. Of course, working between the two capacitors then brings the brightness way down. 

I was using dits to tune with and had trouble finding the dips. I Switched to a solid tuning tone and find that it’s much easier.  No blown finals so far, which I would not think to be a problem with the tuner’s 2:1 SWR limiting.  

John K6WS

On May 18, 2021, at 9:34 AM, Bryan, KJ7PRS via groups.io <martinfab=mac.com@groups.io> wrote:





--


Re: Problem with Tuner Kit but no help here

Jg
 

My experience having finished this kit a week or so back.  

The tuning seems quite finicky (or precise).  The initial dimming of the red LED can be very slight and easy to miss. Of course, working between the two capacitors then brings the brightness way down. 

I was using dits to tune with and had trouble finding the dips. I Switched to a solid tuning tone and find that it’s much easier.  No blown finals so far, which I would not think to be a problem with the tuner’s 2:1 SWR limiting.  

John K6WS

On May 18, 2021, at 9:34 AM, Bryan, KJ7PRS via groups.io <martinfab@...> wrote:


_._,_._,_


Wednesday Evening 40 and 80 meter Nets - Wed, 05/19/2021 20:00-21:00 #cal-reminder

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

Reminder: Wednesday Evening 40 and 80 meter Nets

When: Wednesday, 19 May 2021, 20:00 to 21:00, (GMT-05:00) America/Chicago

Where:40 and 80 Meters

View Event

Organizer: jomatlock@...

Description: The 40 Meter Net will be at 8:00 pm central time (DST)  on 7.122 +-. QRM
NCS is WQ5RP/ACØBQ 

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday (DST). 



The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operator is Johnny ACØBQ 

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 02:00 UTC (9:00PM Central dst Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: Bayou Jumper test schedule

Robert Pritchard
 

Kid


Re: Problem with Tuner Kit but no help here

Bryan, KJ7PRS
 

I found that the red light is considerably brighter then the green in day light.  When I got everything perfect on the match and looked at them in the dark, they were fine.  So I just live with it.  Tuner works great!

Bryan Kj7prs 

On May 17, 2021, at 21:21, PeteWK8S via groups.io <pmeier@...> wrote:

Would like to make this kit work. RED LED stays lit during tuning process and never goes out even with 1:1 load such as dummy load.

Can anyone offer some help here?

Pete WK8S


Re: Problem with Tuner Kit but no help here

Bob Parr
 

Here is what I found:

THe following was reported by W3BNO.  I plan to do this, but have not gotten around to trying yet.

" I solved by connecting a 5k trim pot across the red led. With the tuner feeding a 50 ohm dummy load and adjusted for maximum dimming of the red led, I adjusted the pot until the led just extinguished."

Good luck and let us know if it works for you.

Bob
KG5GTE

------ Original Message ------
From: "PeteWK8S via groups.io" <pmeier@...>
Sent: 5/17/2021 11:21:41 PM
Subject: [4SQRP] Problem with Tuner Kit but no help here

Would like to make this kit work. RED LED stays lit during tuning process and never goes out even with 1:1 load such as dummy load.

Can anyone offer some help here?

Pete WK8S

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