Date   
Re: My uBitx shipped today

Gary Shriver
 

Be sure to let us know when you receive it Tom.  I was wondering how long via DHL to the states.

 

Gary

 

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Tom Christian
Sent: Monday, February 19, 2018 5:06 AM
To: BITX20@groups.io
Subject: Re: [BITX20] My uBitx shipped today

 

Just got PayPal delivery status "Sent" today for my uBitX .  My order since 23-Dec-2017
It's coming DHL to Oregon.  Yay!
Tom
AB7WT

Re: uBitx Shipping question

Gary Shriver
 

I have a question for the group.  For those of you in the USA.  What has been the average time to receive your uBitx once you have been notified that it has been shipped via DHL.  I was just wondering if we have a long customs delay here in the states.  

 

Thanks

73-Gary

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Jim Sheldon
Sent: Monday, February 19, 2018 6:37 AM
To: BITX20@groups.io
Subject: Re: [BITX20] My uBitx shipped today

 

I had managed to get one of the first batch and decided to order a 2nd one.  2nd uBITX ordered on 23 December and I just got shipping notification this morning (Central US time) DHL tracking says it has been picked up in Hyderabad and expected delivery date is Wednesday, the 21st (I'll bet it takes at least 1 or 2 days longer as it will have to clear custom. The first one took 4 days from shipping to my receiving it. so I'm expecting it more like this coming Friday.  DHL sure beats India Post though.  I'm waiting on a case for it coming by India Post that was shipped earlier this month.  No telling when that one will get here - LOL.

Jim - W0EB

Re: Case desined for uBITX #3d_printing #ubitx

Jerry Gaffke
 

My Bitx is still open face on a piece of plywood, works fine..
Many are using unshielded plastic boxes as enclosures.
But if you are receiving interfering signals, a shielded enclosure can help,
If you think you might need shielding, here's a few things to consider:

Interfering signals can come from gear like a faulty wall wart power supply, or a digital clock on the stove.
The microphone and speaker and power cables may need filtering to avoid RFI entering.
You might also want a common mode choke in the coax out to the antenna to prevent
signals (perhaps RFI) from getting picked up by the coax instead of only from the somewhat remote antenna.
Such shielding can also prevent the Bitx's  BFO, VFO, etc from interfering with other gear in the area.

Try the Bitx out in an RF quiet location with a portable antenna, see if that does away with any interfering signals.
 
A quick and dirty wrap around the outside of the rig with aluminum foil will determine if shielding helps.
I'd include a battery and speaker inside that wrap job, try it first without any antenna connected,
some interfering signals (birdies) will still be present due to harmonics of the local oscillators mixing.
Then connect an antenna into the wrap job, making sure the foil connects well with the shell
of the antenna coax connector

Jerry, KE7ER


On Mon, Feb 19, 2018 at 09:10 am, Tim Young wrote:

Carl did a nice job. I lined mine with copper foil to reduce interference. Others may be in a better position to comment on whether it is necessary or not.

https://www.ebay.com/itm/Tapes-Master-2-x-10ft-Copper-Foil-Tape-EMI-Shielding-Conductive-Adhesive-2/282438503301?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Re: HFsignals no longer selling just vfo

Michael Shreeve
 

They are putting up a shopping cart and are waiting for it to be ready to offer it and probably a lot more.

On Mon, Feb 19, 2018 at 6:58 AM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
These are incredibly useful when experimenting (i.e., messing around) with the Nano. Get a handful of Dupont connectors and have at it!

Jack, W8TEE



From: LKNDAVE via Groups.Io <novatronix=aol.com@groups.io>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 9:27 AM
Subject: Re: [BITX20] HFsignals no longer selling just vfo



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--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley



Re: Maximum safe input voltage to ubitx?

Vince Vielhaber
 

What kind of 18650 batteries are you using? E-Cig batteries are designed for an intermittant high current drain while keeping their voltage up.

Vince.

On 02/19/2018 06:49 AM, Mvs Sarma wrote:
during Tx time the battery drops . Yes, You said you wont diacharge
below 3.3V. I observe here that the 18650 cells show 3V while on 1 or 2
amps of discharge. That is what mde me feel the regulator trouble.
However , perhaps using a LDO regulator at 12V you could overcome this
issue.

Thanks for the reply, John.

regards
sarma
vu3zmv


Regards
MVS Sarma


On Mon, Feb 19, 2018 at 4:52 PM, John <passionfruit88@...
<mailto:passionfruit88@...>> wrote:

Hello Sarma,

Regarding the voltage drop, I do not discharge my lithium batteries
below 3.3V per cell.

So a 4S battery pack would need to stop being used at 13.2V. With a
regulators' drop around 1.5V (we only pull 0.4-0.5A from the main
board on Tx, and the finals go strait to the battery), the final
voltage to the main board is around 11.7V. Quite a decent supply
voltage.

Regards,

John (VK2ETA)


Re: Recommendations for learning coding for Bitx and/or arduino

Jack, W8TEE
 

Amazon.com carries it. Make sure you get the 2nd edition...it's a better book and has a chapter on C++ so you can "understand" most library code.

Jack, W8TEE



From: Joe Puma <kd2nfc@...>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 12:30 PM
Subject: Re: [BITX20] Recommendations for learning coding for Bitx and/or arduino

Where can we get this book Jack?



On Feb 19, 2018, at 3:16 AM, Paul Schumacher via Groups.Io <wnpauls@...> wrote:

Yes!  Jack's book

"Beginning C for Arduino " 

is great!

Paul K0ZYV



From: Jack Purdum via Groups.Io <jjpurdum@...>
To: BITX20@groups.io
Sent: Sunday, February 18, 2018 9:52 PM
Subject: Re: [BITX20] Recommendations for learning coding for Bitx and/or arduino

Can I get someone else to say it for me...


Jack, W8TEE



From: Mike Lichtman via Groups.Io <tchrme@...>
To: BITX20@groups.io
Sent: Sunday, February 18, 2018 10:32 PM
Subject: [BITX20] Recommendations for learning coding for Bitx and/or arduino

Okay, I have played with boatanchors and know how to work on tube type radios. Time
to learn some coding for the BitX and/or Arduino. I have a Mac computer. Where should I 
start? Which books are best? I am open to all recommendations? 73 Mike KF6KXG



Virus-free. www.avast.com




Re: Recommendations for learning coding for Bitx and/or arduino

DaveC <murzim@...>
 

Be warned very addictive, got at least two of Jacks books and am well and truly hooked In only a couple of months.

Great people on this forum and very helpful.

Re: [SPAM] Re: [BITX20] RD16HHF1 in the uBITX #ubitx

Lawrence Galea
 

Hi,
I just unpacked my μbitx to check what was supplied and no time yet to hook it up.
Just a thought on the output power drop.
Can you try simulating reducing C93 and C94 so that with the corresponding higher reactance at lower frequencies less drive will be available at lower frequencies.
A value could be found to more or less even out the drive across the frequency range since the gate capacitance higher reactance at lower frequencies will compensate for the increased capacitive reactance of C93 and C94 while on the higher frequencies the opposite will be true.
Regards
Lawrence

On Mon, Feb 19, 2018 at 4:35 PM, K9HZ <bill@...> wrote:

> I did find the following in my simulations though... if you change R85 from 100 to 470 ohms (pre-driver stage bias), change R261 and R262 from 100 to 1K ohm, run RV1 wide open (full drive) and then use a compensating capacitor (your 33pf at 14 MHz) across T11 primary with a 1:4 transformer:

> 

> 6M - 48pf

> 10M - 110pf

> 20M - 320pf

> 40M - 680pf

> 80M - 1,500pf

> 160M - 4,700pf

> 

> It shows at least 20 watts out on each band except for 6 meters... where it peaks at 12 watts.

> 

> 

 

 

 

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

 

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

 

Owner – Operator

Villa Grand Piton – J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com

Like us on Facebook! facebook icon

 

 

email:  bill@...

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Gordon Gibby
Sent: Saturday, February 17, 2018 6:54 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 in the uBITX #ubitx

 

​Dr. Schmidt -- no way to put some feedback into the circuit in some manner to stabilize the gain?    1000 pf across the 22 ohm emitter resistors to have a 3db break at 7 MHz?

 

 



Re: Videos for how to wire Ubitx

Michael Monteith
 

 Excellent job Neo.  Sometimes an explanation helps clarify things.  Especially for someone new to kit building, etc.  I love to see all the community work around this.  Everyone bringing their expertise to help out.   Thanks again.

73, Michael
KM4OLT

Re: Recommendations for learning coding for Bitx and/or arduino

Joe Puma
 

Where can we get this book Jack?



On Feb 19, 2018, at 3:16 AM, Paul Schumacher via Groups.Io <wnpauls@...> wrote:

Yes!  Jack's book

"Beginning C for Arduino " 

is great!

Paul K0ZYV



From: Jack Purdum via Groups.Io <jjpurdum@...>
To: BITX20@groups.io
Sent: Sunday, February 18, 2018 9:52 PM
Subject: Re: [BITX20] Recommendations for learning coding for Bitx and/or arduino

Can I get someone else to say it for me...


Jack, W8TEE



From: Mike Lichtman via Groups.Io <tchrme@...>
To: BITX20@groups.io
Sent: Sunday, February 18, 2018 10:32 PM
Subject: [BITX20] Recommendations for learning coding for Bitx and/or arduino

Okay, I have played with boatanchors and know how to work on tube type radios. Time
to learn some coding for the BitX and/or Arduino. I have a Mac computer. Where should I 
start? Which books are best? I am open to all recommendations? 73 Mike KF6KXG



Virus-free. www.avast.com


Re: Case desined for uBITX #3d_printing #ubitx

Tim Young
 

Carl did a nice job. I lined mine with copper foil to reduce interference. Others may be in a better position to comment on whether it is necessary or not.

https://www.ebay.com/itm/Tapes-Master-2-x-10ft-Copper-Foil-Tape-EMI-Shielding-Conductive-Adhesive-2/282438503301?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Tim

WB7UVH



On 2018-02-19 09:32, Carl Beck wrote:

I have updated my PDF File as a result of questions in assembling the uBITX in my Case.  After I post my PDF File on the forum: for a couple of days I get request fir the case and questions.  It seems the it falls off the radar until I post again.  I am getting good reviews from those who ordered my case so take a look: you may want one.


Re: Recommendations for learning coding for Bitx and/or arduino

Tom Christian
 

Jack's book is great!  Got it for my birthday last month.....:)
Tom
AB7WT

Re: Maximum safe input voltage to ubitx?

Jack, W8TEE
 

Max current 0.8A??

Jack, W8TEE



From: Mvs Sarma <mvssarma@...>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 11:37 AM
Subject: Re: [BITX20] Maximum safe input voltage to ubitx?


Re: Contacts with completed BITX transceivers

Patrick G
 

I'd up for a test. I know my 40 meters works and I'm sure I can test at 30 as well. Email me to coordinate KC9RGE@...

On Feb 17, 2018 09:07, "Ken Brown" <n4so.ken@...> wrote:
Anyone with a completed BITX radio?  QRV on the 30 meter
band. 

 A 40 meter antenna is in the works.

No response from the first request. Anyone???


Ken N4SO


Re: Maximum safe input voltage to ubitx?

MVS Sarma
 

On Mon, Feb 19, 2018 at 8:40 PM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
It says "No longer available"

Jack, W8TEE



From: VE7WQ <v@...>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 1:52 AM
Subject: Re: [BITX20] Maximum safe input voltage to ubitx?

Better yet, a SEPIC (non-inverting) PM-6009DU Buck-Boost 4A converter:

http://tinyurl.com/y9ysz6k5



Virus-free. www.avast.com


Case desined for uBITX #3d_printing #ubitx

Carl Beck
 

I have updated my PDF File as a result of questions in assembling the uBITX in my Case.  After I post my PDF File on the forum: for a couple of days I get request fir the case and questions.  It seems the it falls off the radar until I post again.  I am getting good reviews from those who ordered my case so take a look: you may want one.

Re: Contacts with completed BITX transceivers

Don, ND6T
 

Ken,
I'd sure be up for a sked. Either 30 or 40 in the mornings would be best. Probably 30 would have the best propagation. Email me a nd6t@....
73, Don

Re: Second batch of uBITX shipping? #ubitx

Nigel G4ZAL
 

For us Europeans, 'snail mail' seems to be the best way (and often fastest by not using DHL) as DHL seems to always incur customs inspection and charges etc.

Nigel - G4ZAL

Re: Maximum safe input voltage to ubitx?

Paul Schumacher
 

I have a few on hand already Jack.
I will try that, hopefully they are not too noisy.

thanks,

Paul K0ZYV



From: Jack Purdum via Groups.Io <jjpurdum@...>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 9:11 AM
Subject: Re: [BITX20] Maximum safe input voltage to ubitx?

It says "No longer available"

Jack, W8TEE



From: VE7WQ <v@...>
To: BITX20@groups.io
Sent: Monday, February 19, 2018 1:52 AM
Subject: Re: [BITX20] Maximum safe input voltage to ubitx?

Better yet, a SEPIC (non-inverting) PM-6009DU Buck-Boost 4A converter:

http://tinyurl.com/y9ysz6k5



Virus-free. www.avast.com


Re: Micron? long, logical and hopefully both educational and amusing ...

Arvo W0VRA
 

Here's my 2¢, but maybe I'm ½ crazy, or even crazy³. ¿Come se dice en Español?  ¡Ay caramba! Are you paying in $, €, ¥, or £?  Is that knob Ø25.4mm?  All hail the µB®!  Or its little brother the B40™!  Which is better, a 40% discount, or 40‰?  All this fussing is like a † or worse, ‡, in my heart.  Maybe it's the weather; we haven't seen 70°F for a while, three months ±a few days anyway.

Typed using the codes from http://ascii-table.com/ansi-codes.php which are of the form ALT+0xxx.

But ohm and pi you gotta copy and paste.