Date   
Re: QCX challenge on monday 24.2.2020

Peter GM0EUL
 

Two contacts at 1300, Erich EA8/HB9FIH for 3 points and Kreso 9A6RHJ running 100 watts to a horizontal quad.  I'll be back on 40m for the 1900 with a mix of QRP and QRO for qcx challenge and CWops practice.  Plan is to use my QCX40 and switch my amp in and out as appropriate.
73
Peter GM0EUL

CWops 1899. FISTS 18888, SKCC 16307, GQRP 15056



On Mon, 24 Feb 2020 at 14:31, Hans Summers <hans.summers@...> wrote:
Hi all

I suddenly remembered at 3:50pm local time I still had to rush to the lost office with 3-days worth of QRP Labs packages to send out! Anyway I was back and on air by about 4:10pm with my QCX-40.

A lot of noise and not a lot of signals. A few ghosts but we didn't get as far as getting each others callsigns well enough. 

Sveto YT1LS was the only station worked, but he was non-QRP non-QCX. 

See you at 1900Z... 40m

73 Hans G0UPL 

On Mon, Feb 24, 2020, 17:24 Gerald Ball via Groups.Io <gerryball2=talktalk.net@groups.io> wrote:

Hi All

Also worked EA8/HB9FIH not too sure if Erich was responding to my call or if I called over him because his signal was lost in qrn. very bad electrical noise and static here today. Will try 40m tonight.


73 Gerry G4OJF


--
gerry

Re: QCX challenge on monday 24.2.2020

N3MNT
 

Freudian slip

Loud pop in earphone when switching from transmit to receive

John Brock
 

Just powered up my 20M QCX. All looks good with alignment. I can hear signals. So it may be OK.
Have not measured RF out.
Right now using it would be irritating due to the very loud pop in the audio when switching from Xmit to Rcv.
I searched the message archive, but did not find any mention  of this there. I thik In have seen it somewhere. Maybe Ubitx group.
Any ideas?
Thanks
John
WA8US

Re: QCX challenge on monday 24.2.2020

Stephen Farthing G0XAR JO92ON97
 

Hans, 

Was that the “lost office” or did you mean the “post office” ? Which back in the days when I was sending the kits out from England sometimes amounted to the same thing! 

Greetings from a wet and windy England,

Steve G0XAR 


Re: QCX40-Can I add a second RF connector? #qcx

ajparent1/KB1GMX
 

James,

The basic idea of using coax to allow positioning the connector
as deemed convenient is the way to go.

However RG174 a material made for frustration.  ;)
The melting temp makes it easy to short center to braid
so be very careful and wary of that possibility.

I use RG316, yes it is not at all cheap but Teflon aka PTFE is
heat resistant.  Its special annoyance is being strip resistant
so you need to know the tricks for stripping it.

Allison
-------------------------------
Please reply on list so we can share.
No direct email, it goes to bit bucket due address harvesting in groups.IO

Re: QCX40-Can I add a second RF connector? #qcx

Bill NF6R
 

Greg and James,

Thanks for the replies and ideas.

73
--

Bill - NF6R
SKCC 20696 NAQCC 9984 FISTS 19479 CalQRP 78 Flying Pigs 4181

Re: Dealing with QRP Lab 12 volt Coaxial Connectors

Bill Cromwell
 

Aha! Thank you. I don't use those so I would never have guessed.

73,

Bill KU8H

On 2/24/20 9:57 AM, Roger Hill wrote:
Anderson power pole..superb connectors.
--
bark less - wag more

Re: Dealing with QRP Lab 12 volt Coaxial Connectors

SkipF, NT1G <skip.flem@...>
 

Sounds better than Auxilliary Power Plug.

Re: Dealing with QRP Lab 12 volt Coaxial Connectors

Roger Hill
 

Anderson power pole..superb connectors.

On 24 Feb 2020, at 14:56, Bill Cromwell <wrcromwell@...> wrote:
Hi Jack,

Alphabet soup time. I'll bite. I thought an APP was a program for a
smart phone. Obviously not what you have in mind. So...what is *your* APP?

73,

Bill KU8H

On 2/24/20 8:51 AM, Jack Brabham - KZ5A wrote:
I have found it difficult to plug a coaxial power plug into my QCX (with
BaMaTec case) without blowing a fuse.   So I have to unplug it's cable
from power before pluging the connector in to the QCX, then plug the APP
end to the power strip.

The next time I work on it I plan to lose the coaxial power connector
and replace it with a short APP pigtail.

73 Jack KZ5A

Re: Dealing with QRP Lab 12 volt Coaxial Connectors

Bill Cromwell
 

Hi Jack,

Alphabet soup time. I'll bite. I thought an APP was a program for a smart phone. Obviously not what you have in mind. So...what is *your* APP?

73,

Bill KU8H

On 2/24/20 8:51 AM, Jack Brabham - KZ5A wrote:
I have found it difficult to plug a coaxial power plug into my QCX (with BaMaTec case) without blowing a fuse.   So I have to unplug it's cable from power before pluging the connector in to the QCX, then plug the APP end to the power strip.
The next time I work on it I plan to lose the coaxial power connector and replace it with a short APP pigtail.
73 Jack KZ5A
--
bark less - wag more

Re: QCX challenge on monday 24.2.2020

Hans Summers
 

Hi all

I suddenly remembered at 3:50pm local time I still had to rush to the lost office with 3-days worth of QRP Labs packages to send out! Anyway I was back and on air by about 4:10pm with my QCX-40.

A lot of noise and not a lot of signals. A few ghosts but we didn't get as far as getting each others callsigns well enough. 

Sveto YT1LS was the only station worked, but he was non-QRP non-QCX. 

See you at 1900Z... 40m

73 Hans G0UPL 

On Mon, Feb 24, 2020, 17:24 Gerald Ball via Groups.Io <gerryball2=talktalk.net@groups.io> wrote:

Hi All

Also worked EA8/HB9FIH not too sure if Erich was responding to my call or if I called over him because his signal was lost in qrn. very bad electrical noise and static here today. Will try 40m tonight.


73 Gerry G4OJF


--
gerry

Re: QCX challenge on monday 24.2.2020

Gerald Ball
 

Hi All

Also worked EA8/HB9FIH not too sure if Erich was responding to my call or if I called over him because his signal was lost in qrn. very bad electrical noise and static here today. Will try 40m tonight.


73 Gerry G4OJF


--
gerry

Re: QCX challenge on monday 24.2.2020

G4GIR
 

Thanks for the QSO Martin, you were my one and only contact for the period, I unfortunately got engrossed in the Telegraph Crossword (a daily ritual with my wife!!) and forgot all about the QCX challenge!!!
Hope to see you tonight on 20 maybe.
 
Best 73
 
Ian G4GIR
 

From: Martin
Sent: Monday, February 24, 2020 2:10 PM
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] QCX challenge on monday 24.2.2020
 
on 20 quite some RBN reports even from US and I heard some US calling someone I could not hear.
Worked EA8/HB9FIH with difficulties and heard him call later but no mre QSO.

One QSO on 40 with G4GIR but not using QCX there.. Nice signal but time was over.

Try to make it for 19:00Z

72/3
Martin
DK3UW

Re: QCX challenge on monday 24.2.2020

Martin DK3UW
 

on 20 quite some RBN reports even from US and I heard some US calling someone I could not hear.
Worked EA8/HB9FIH with difficulties and heard him call later but no mre QSO.

One QSO on 40 with G4GIR but not using QCX there.. Nice signal but time was over.

Try to make it for 19:00Z

73
Martin
DK3UW

Re: Dealing with QRP Lab 12 volt Coaxial Connectors

Jack Brabham - KZ5A
 

I have found it difficult to plug a coaxial power plug into my QCX (with BaMaTec case) without blowing a fuse.   So I have to unplug it's cable from power before pluging the connector in to the QCX, then plug the APP end to the power strip.

The next time I work on it I plan to lose the coaxial power connector and replace it with a short APP pigtail.

73 Jack KZ5A



On 2/23/2020 6:11 AM, George Korper wrote:
 QRP Labs kits, the QCX metal case, and the 50 Watt PA QCX kit use 12 Volt Coaxial
sockets. As a long time user of Anderson Power Pole connectors, I have struggled with
this problem, looking for a reliable plug that is neat and simple. Many coaxial plugs are 
poor quality and give erratic connections.  These have proven good with #18 Red and Black wire. 
Read the reviews and decide for yourself. The socket can be used as a cap, and the screw terminal ,
similar to the one on the QCX, has excellent grip and does not strip. DO NOT EXCEED 5 amps. 
https://www.amazon.com/DAYKIT-Female-2-1x5-5MM-Adapter-Connector/dp/B01J1WZENK/ref=sr_1_4?keywords=12+volt+coaxial+plug&qid=1582460959&sr=8-4


Re: QCX40-Can I add a second RF connector? #qcx

James Daldry W4JED
 

Hi, Guys

I used a short length of 174 from the holes in the board to an SO-239 mounted on my home made case. I also mounted the jacks, switches, and controls off-board. My only precaution was to stick the ends of the wires down with hot glue so moving controls, jacks, or switches around wouldn't break the wires off at the control or board. Everything works fine, and no "bad solder on the volume control" problem.

73

Jim W4JED

On 2/24/20 12:07 AM, Gregg Myers wrote:
Hi Bill,

I wouldn't think you would have any negative consequences if you soldered some  50 ohm coax like RG-174 to a second connector on the other side. I don't know your exact space constraints, but a right angle BNC adapter and using the original BNC on the right as-is might take take your coax connection in a better direction and be a lot less work and cheaper. If not, you can solder a short piece of RG-174 to a second BNC and give it a test before committing to it. If the second connection does something unexpected, you won't be out much and it's always good to have a spare BNC connector for other stuff.

73,
Gregg

On Sun, Feb 23, 2020 at 9:43 PM Bill NF6R <nf6r.bill@...> wrote:
Hello,

I have a perfectly working QCX40.  I rearranged my desk and it would be better if the RF connector came out the left side of the case.  Will it mess up and of the tuned characteristics if I add a second RF connector and soldered the wires to the mount points of the existing RF connector?

Thanks,
--

Bill - NF6R
SKCC 20696 NAQCC 9984 FISTS 19479 CalQRP 78 Flying Pigs 4181

Re: QCX 40 Have I trashed it?

Ian McCarthy G3YBY F5VKT
 

Hi Andrew,

Thanks for the offer but i have already taken Dean up on his offer. Where are you by the way? Couldn't see you call to look you up?

73 Ian G3YBY

Re: QCX 40 Have I trashed it?

Andrew Lenton
 

Dear Ian,

 

Do you have a current limiting power supply, you can set to 5V or 3V3, with a current limit of 100 mA and apply to various parts of the board to help you find your fault?

 

We are not far apart, you are welcome to bring your unit around to my QTH look me up on QRZ.com, and contact me directly, I have a solder work station, so can safely remove any parts without damage.

 

BR

 

Andrew

Re: QCX 40 Have I trashed it?

Roger Hill
 

I never had one of Hans's boards bite me!

:)

Roger

---
***************************
Roger Hill
***************************


On 2020-02-24 08:15, Andrew Lenton wrote:

Dear Ian,

 

Do you have a current limiting power supply, you can set to 5V or 3V3, with a current limit of 100 mA and apply to vicious parts of the board to help your fault?

 

We are not far apart, you are welcome to bring your unit around to my QTH look me up on QRZ.com, and contact me directly, I have a solder work station, so can safely remove any parts without damage.

 

BR

 

Andrew

Re: QCX40-Can I add a second RF connector? #qcx

Gregg Myers
 

Hi Bill,

I wouldn't think you would have any negative consequences if you soldered some  50 ohm coax like RG-174 to a second connector on the other side. I don't know your exact space constraints, but a right angle BNC adapter and using the original BNC on the right as-is might take take your coax connection in a better direction and be a lot less work and cheaper. If not, you can solder a short piece of RG-174 to a second BNC and give it a test before committing to it. If the second connection does something unexpected, you won't be out much and it's always good to have a spare BNC connector for other stuff.

73,
Gregg

On Sun, Feb 23, 2020 at 9:43 PM Bill NF6R <nf6r.bill@...> wrote:
Hello,

I have a perfectly working QCX40.  I rearranged my desk and it would be better if the RF connector came out the left side of the case.  Will it mess up and of the tuned characteristics if I add a second RF connector and soldered the wires to the mount points of the existing RF connector?

Thanks,
--

Bill - NF6R
SKCC 20696 NAQCC 9984 FISTS 19479 CalQRP 78 Flying Pigs 4181