Date   
any tips for debugging RFI issue? #ubitx-help

Mike KK7ER
 

Our uBITX v3 behaves just fine when transmitting into a dummy load.  But when transmitting into an end fed wire with SWR 1:1 it misbehaves.  When transmitting CW, the uBITX gets stuck in transmit for a few seconds after I release the key.  When pushing the PTT switch, it also sticks in transmit but the menu also comes up on the display.  If the internal wiring was too long, I would expect the issue to show up with both dummy load and antenna.  I suspected the counterpoise (coax shield) was bringing RF back into the radio.  A number of sources seemed to suggest an "air choke" so I wound 20 feet of coax tightly around a plastic bottle and placed that between the antenna and feedline/coax but it made no difference.  Any tips from the antenna gurus here would be very much appreciated.

73 Mike KK7ER

Re: ubitx and case for sale

Doug W
 


If you want to use the radio plenty of us here can help you.   Unless it is not working you do not have to do a single thing to the Raduino to have a perfectly functional radio.  There are lots of modifications discussed here as many of us are enthusists and tinkerers.  Don't let that scare you away. 
--
www.bitxmap.com

Re: experience with Sunil VU3SUA's enclosures #ubitx

Eddie Esserman
 

Thanks Ian at ? for email.
Making good progress.  Don't think I will be using the digital connections on the back panel, but putting in the board.  Also switching from the panel.
Rest seems pretty well being resolved.  Need to find a good picture of the relay for the TX/RX LED connection.
And wiring the mic connector.  I'll learn Arduino on an easier board.  My first experience, and this is in place and seems to work.  That's another lesson.

Eddie

Re: any tips for debugging RFI issue? #ubitx-help

Clark Martin
 

Is your uBitX in a shielded enclosure?  It’s possible RF (normal radiation from the antenna) is getting into the circuitry.


Clark Martin
KK6ISP

On Aug 1, 2018, at 7:25 PM, Mike KK7ER <groupio@...> wrote:

Our uBITX v3 behaves just fine when transmitting into a dummy load.  But when transmitting into an end fed wire with SWR 1:1 it misbehaves.  When transmitting CW, the uBITX gets stuck in transmit for a few seconds after I release the key.  When pushing the PTT switch, it also sticks in transmit but the menu also comes up on the display.  If the internal wiring was too long, I would expect the issue to show up with both dummy load and antenna.  I suspected the counterpoise (coax shield) was bringing RF back into the radio.  A number of sources seemed to suggest an "air choke" so I wound 20 feet of coax tightly around a plastic bottle and placed that between the antenna and feedline/coax but it made no difference.  Any tips from the antenna gurus here would be very much appreciated.

Re: RFI Problem related by routing audio through K3 (uBitx)?

ohwenzelph
 

“PWB” means?

Re: any tips for debugging RFI issue? #ubitx-help

Mike KK7ER
 

It is in this aluminum bottom / steel top case from Jameco (shown here at first power on -- alligators clips working around bad encoder switch are now replaced with a toggle).  Transmit tests done with case fully closed.

Re: ND6T AGC and Click kit wiring notes

Nick VK4PP
 

Thanks Kees, I hope Don ND6T is also OK....

So far I have this. The intention is to fit it next too my HPF on the ubitx... basically the same as yours Kees, just with components face up.
and TH also, and a pot for release time...

Re: End Fed antennas w/ uBITX #ubitx

Timothy Fidler
 

all the better for TEF .. my treasure chest. 

Timothy E. Fidler : Engineer BE Mech(1) Auckland , NDT specialist AINDT UT /RT3 , MT2 CB #2885, 
Telephone Whangarei   022  691 8405
e: Engstr@...



----- Original Message -----
From:
BITX20@groups.io

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 01 Aug 2018 07:41:22 -0700
Subject:
Re: [BITX20] End Fed antennas w/ uBITX


Tim,

I did see that.  I appreciate that but I do have stock here thank you.

Allison

Re: ND6T AGC and Click kit wiring notes

Truffies
 

please send parts for 2 bds as I find 1 bd from someone

and I still will take your 2 kits wish all was from you so to work

th yu

Alan

-----Original Message-----
From: Kees T
Sent: Aug 1, 2018 9:48 PM
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC and Click kit wiring notes

Alan,

I was looking through my unbuilt uBITX kit and found two more AGC boards which I was using for "try for fit". So when your check/letter arrives, I can send you 2 AGC mini-kits. The total cost would be $5 which includes postage so I'll refund the rest. 

73 Kees K5BCQ

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

I today sent a check for 3 AGC mini kits $15 plus $5 for shipping
 
Alan Kessler WB2BQK
3222 South Dixie Hwy
Suite D
West Palm Beach, Fl 33405

Re: ND6T AGC and Click kit wiring notes

Timothy Fidler
 

Bob I know these are non components boards  but I suspect they use the 7822 audio amp. THere was a bleat that some  Chino TDAs were failing. If so I know of two sources for NOS  replacements one out of Oz and one in USA. .. ad we are not talking crusty old Dan in Montana. Email  TEF if this is the case.

Timothy E. Fidler : Engineer BE Mech(1) Auckland , NDT specialist AINDT UT /RT3 , MT2 CB #2885, 
Telephone Whangarei   022  691 8405
e: Engstr@...



----- Original Message -----
From:
BITX20@groups.io

To:
<BITX20@groups.io>
Cc:

Sent:
Wed, 01 Aug 2018 18:35:40 -0700
Subject:
Re: [BITX20] ND6T AGC and Click kit wiring notes


I have 5 of the (VA3NOI)   ND6T AGC boards .  These are Through the Hole boards.

These are Free ---I  only ask that you e-mail me first as there are only five. Just need a self dressed stamped envelope after that.Stateside please.

Small amount so it's a single board only per request.

E-mail is----(W2HK) @arrl.net 

Also wanted to add how much I have enjoyed the Ubitx and the forum.

73's

-- Bob

Re: Off Topic: Gap Antennas

DaveC <murzim@...>
 

Thanks guys, Don't think it has anything to do with the EU privacy issues also cleared out all cookies etc and no change.
It looks like a DNS issue and somewhere in the chain from the masters an update error is occurring.

73 Dave G8PGO

Re: Volume with switch

Ian Reeve
 

Hi Eddie,

 

I just am waiting for my phone to charge up and I will send you a pic of the led wiring and the volume pot wiring.

 

73

 

Ian

Ian.radioworkshop@...

 

 

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Eddie Esserman <ee@...>
Sent: Thursday, August 2, 2018 3:22:32 AM
To: BITX20@groups.io
Subject: [BITX20] Volume with switch
 
Anyone got a drawing or picture of the switch on the pot?
thanks.
Eddie

Re: hacking bitx40 for 20 metre #bitx40

terry hughes
 

just a bit more about my hacking requirements
what i would really like is a general coverage receiver (like the ubitx) but leave the tx to 40 m only
presumably this means a hack to the rx input filter and a hack to the sketch

any ideas

Re: Volume with switch

Ian Reeve
 

Dear Eddie,

 

Here are some pics to help you:

 

Wiring of tx/rx led connections to board

Wiring of USB rear connector- a mini usb plug is inserted into the socket on the Arduino and then wired as shown to the USB socket on the rear panel.

Alternatively a USB mini to standard USB lead could be used and left loose out of the back of the case.

 

Re the switched pot, please see pictures on my separate email to you

 

73

 

Ian M0IDR

 

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Ian Reeve <ian.radioworkshop@...>
Sent: Thursday, August 2, 2018 9:07:50 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Volume with switch
 

Hi Eddie,

 

I just am waiting for my phone to charge up and I will send you a pic of the led wiring and the volume pot wiring.

 

73

 

Ian

Ian.radioworkshop@...

 

 

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Eddie Esserman <ee@...>
Sent: Thursday, August 2, 2018 3:22:32 AM
To: BITX20@groups.io
Subject: [BITX20] Volume with switch
 
Anyone got a drawing or picture of the switch on the pot?
thanks.
Eddie

Re: hacking bitx40 for 20 metre #bitx40

Allard PE1NWL
 

Terry,
The latest Raduino sketch v1.28 provides this feature:

Prevention of out-of-band transmissions

The software restricts transmission to the 40m ham band allocation. By default this is ITU region 2 (Americas: 7000-7300 kHz). If you are located in a different ITU region, uncomment ONE of the lines 44-47 depending on your location, and recompile.

If the PTTsense-mod is installed, out-of-band TX will be disabled, but RX is still possible outside the band. If the PTTsense-mod is NOT installed, both TX as well as RX will be disabled outside the band.


Download it from https://github.com/amunters/bitx40

73 Allard PE1NWL

Re: Volume with switch

Ian Reeve
 

Hi Eddie,

 

Pics of led wiring and switched pot

I did not use the supplied one as the knob did not fit the spindle but have shown the one as supplied being held.

Wiring looking at the back of the pot:

 

Top three terminals  Left   green (earth)  Middle orange (feed to audio amp) Right yellow audio in to audio section.

These are the colours used as shown on the instruction wiring sheets.On mine,the connections come from the small pcb supplied and so might confuse.

The two terminals at the back on theblack moulding are the switch and on mine I wired them across the push button on the rear panel which remains in the OFF position,the switch on the pot now switches the rig.

 

On mine you will see on the switched pot:  left screen (bare) earth

Centre (red) feed to audio amp

Right (white) audio in from receiver section for audio amp.

 

The two thicker wires wrapped   (red and orange) are the ON/OFF switch terminals on my pot.

 

The LED connecting three wires as shown in the earlier email,are connected to the led as follows:

 

In my case white,blue and red

 

White goes to centre pin of led (earth)

The other two go to the remaining pins via current limiting resistors

On mine I used 1.6K ohms but that value might need increasing as the led is rather bright.

 

Temporarily wire in the led and when the rig is switched on to receive you want the led green to be on ( in my case the led flat side is the red wire,the round side is the blue wire) to be on in receive.

So if you use my colours and wire as described,it should be green (rx) and red(tx)

 

Any problems,contact me directly if you wish on ian.radioworkshop@...

 

73

 

Ian M0IDR

 

Sent from Mail for Windows 10

 

From: Ian Reeve
Sent: 02 August 2018 10:03
To: BITX20@groups.io; ee@...
Subject: Re: [BITX20] Volume with switch

 

Dear Eddie,

 

Here are some pics to help you:

 

Wiring of tx/rx led connections to board

Wiring of USB rear connector- a mini usb plug is inserted into the socket on the Arduino and then wired as shown to the USB socket on the rear panel.

Alternatively a USB mini to standard USB lead could be used and left loose out of the back of the case.

 

Re the switched pot, please see pictures on my separate email to you

 

73

 

Ian M0IDR

 

 

Sent from Mail for Windows 10

 

From: BITX20@groups.io <BITX20@groups.io> on behalf of Ian Reeve <ian.radioworkshop@...>
Sent: Thursday, August 2, 2018 9:07:50 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Volume with switch

 

Hi Eddie,

 

I just am waiting for my phone to charge up and I will send you a pic of the led wiring and the volume pot wiring.

 

73

 

Ian

Ian.radioworkshop@...

 

 

 

Sent from Mail for Windows 10

 

From: BITX20@groups.io <BITX20@groups.io> on behalf of Eddie Esserman <ee@...>
Sent: Thursday, August 2, 2018 3:22:32 AM
To: BITX20@groups.io
Subject: [BITX20] Volume with switch

 

Anyone got a drawing or picture of the switch on the pot?
thanks.
Eddie

 

Re: hacking bitx40 for 20 metre #bitx40

terry hughes
 

hi

do i need to hack the receiver input filter

terry

Re: Off Topic: Gap Antennas

Karl Heinz Kremer, K5KHK
 

One thing you can try is to change your DNS server configuration. You are very likely using your orovider’s DNS servers. You can change that to e.g. OpenDNS or Google:

http://opendns.com
https://developers.google.com/speed/public-dns/
--
Karl Heinz - K5KHK

Re: ND6T AGC and Click kit wiring notes

Don, ND6T
 

Go for it, Nick! It seems that there are quite a few looking for some through-hole kits.
Don't forget, this circuit also works the same on BITX40s as well.
GL, - Don

Re: Off Topic: Gap Antennas

Alan de G1FXB
 

There are reports from 3 different EU countries that the site doesn't resolve there.
Using a VPN to provide a point of presence within the US does.....
This would indicate it's the source site not the destination(s) that is experiencing difficulties, else there are EU DNS sanctions being applied  :-P

Who wants to try the site from elsewhere, Australasia?

Alan

On 02/08/2018 11:32, Karl Heinz Kremer, K5KHK wrote:
One thing you can try is to change your DNS server configuration. You are very likely using your orovider’s DNS servers. You can change that to e.g. OpenDNS or Google:

http://opendns.com
https://developers.google.com/speed/public-dns/
--
Karl Heinz - K5KHK