Date   
Re: Ubitx audio debug question

WA9GQT@...
 

Thanks Jerry,
It was a WX TDA2822.  I found that Gateway Electronics here in St. Louis has the TDA2822M chips in stock. I put 3 chips on hold
and was able to cancel my Amazon.com order in time. Hopefully that will give me a better chance of getting a good IC.

73, Rod

USB interface cable installation uBITX

Dave Bottom <ars.kd6az@...>
 

Re: Ubitx audio debug question

Jerry Gaffke
 

I'm curious what maker's mark you find on those new chips from Gateway,
and how well they work for you.
Seems to be a half dozen different flavors out there.
Some of the clones are kind of sour, as you have noticed.


On Wed, Mar 14, 2018 at 11:52 am, <WA9GQT@...> wrote:
Thanks Jerry,
It was a WX TDA2822.  I found that Gateway Electronics here in St. Louis has the TDA2822M chips in stock. I put 3 chips on hold
and was able to cancel my Amazon.com order in time. Hopefully that will give me a better chance of getting a good IC.

RD transistors, unobtanium?

Ashhar Farhan
 

Does anyone have news of this? RF Parts is no longer stocking RD16HHF1 and they have marked RD15HVF1 as EOL. where does that leave us all?

- f

Re: 13.8 v power supplies safe for bitx?

Walter
 

This is all good and important information.  My solar power system will bring my batteries up to 14.6VDC for about an hour every day.  My system normally runs art 13.4 VDC.  Usually the battery conditioning occurs while I am at work.  However when I am off work I may actually be operating when this battery conditioning is taking place.  I may need to think about putting a regulator in the case to manage this. 

I think I will use a regulator similar to a boost regulator (link below) that I use in my ham station to charge my laptop.  These produce no RF noise, at least in my use they haven't, and provide a stable regulated voltage.  This model is only about $6.00.  A little more expensive model put out by droke even has a current limiting feature.  I have some of those too.  This will likely be my solution to limiting the DC power to my UBITX on my solar power system.

https://www.ebay.com/itm/150W-DC-DC-Boost-Converter-10-32V-In-to-12-35V-Out-6A-Step-Up-Voltage-Charger-US/192032921916?epid=2074479052&hash=item2cb60dd93c:g:62IAAOSwImRYMgDy:sc:USPSFirstClass!47885!US!-

Thanks for the great information
--
73, W9KJO
Walter

Re: USB interface cable installation uBITX

adelolly07@...
 

Nice, I was going to do similar, however the raduino usb socket is damaged and won’t take a plug :(

Re: 13.8 v power supplies safe for bitx?

Don Meyerhoff
 

I use one myself. Works great. Piece of mind for a couple of bucks.

73

Don Meyerhoff
WA2SWX

On Mar 14, 2018 3:47 PM, "Walter" <W9KJO@...> wrote:
This is all good and important information.  My solar power system will bring my batteries up to 14.6VDC for about an hour every day.  My system normally runs art 13.4 VDC.  Usually the battery conditioning occurs while I am at work.  However when I am off work I may actually be operating when this battery conditioning is taking place.  I may need to think about putting a regulator in the case to manage this. 

I think I will use a regulator similar to a boost regulator (link below) that I use in my ham station to charge my laptop.  These produce no RF noise, at least in my use they haven't, and provide a stable regulated voltage.  This model is only about $6.00.  A little more expensive model put out by droke even has a current limiting feature.  I have some of those too.  This will likely be my solution to limiting the DC power to my UBITX on my solar power system.

https://www.ebay.com/itm/150W-DC-DC-Boost-Converter-10-32V-In-to-12-35V-Out-6A-Step-Up-Voltage-Charger-US/192032921916?epid=2074479052&hash=item2cb60dd93c:g:62IAAOSwImRYMgDy:sc:USPSFirstClass!47885!US!-

Thanks for the great information
--
73, W9KJO
Walter

Re: RD transistors, unobtanium?

Ryan Flowers
 

Re: 13.8 v power supplies safe for bitx?

Jerry Gaffke
 

Had never heard of Drok, they have lots of stuff up on Amazon.
Does your Drok allow you to set the max current anywhere from 0 Amps to say 5 Amps?
Sorely needed.

Lots of cheap switchers out there now, but none of them seem to deal properly with current limiting.
Should be able to set both the regulated voltage and the max current.
If the load sucks too much current, the voltage drops until the current comes within the set limit.

Any of those switchers could do this for the price of an op-amp and a pot, maybe an extra $1.

Jerry, KE7ER
 


On Wed, Mar 14, 2018 at 12:47 pm, Walter wrote:
A little more expensive model put out by droke even has a current limiting feature.

Re: RD transistors, unobtanium?

M Garza <mgarza896@...>
 

I am confused.  Looking at this page:  https://www.rfparts.com/rd16hhf1.html
RF Parts still lists this as available.

Marco - Kg5PRT

On Wed, Mar 14, 2018 at 2:45 PM, Ashhar Farhan <farhanbox@...> wrote:
Does anyone have news of this? RF Parts is no longer stocking RD16HHF1 and they have marked RD15HVF1 as EOL. where does that leave us all?

- f


Re: 13.8 v power supplies safe for bitx?

Jack, W8TEE
 

I have a solar system that tracks the sun using a NEMA 17 stepper motor and an Arduino. A small 10W panel works through a controller to supply juice to a battery:

Inline image

In this case, the battery is a small motorcycle battery. I have since trade it out for a small lipo pack.

Jack, W8TEE




From: Don Meyerhoff <wa2swxdm@...>
To: BITX20@groups.io
Sent: Wednesday, March 14, 2018 3:50 PM
Subject: Re: [BITX20] 13.8 v power supplies safe for bitx?

I use one myself. Works great. Piece of mind for a couple of bucks.

73

Don Meyerhoff
WA2SWX

On Mar 14, 2018 3:47 PM, "Walter" <W9KJO@...> wrote:
This is all good and important information.  My solar power system will bring my batteries up to 14.6VDC for about an hour every day.  My system normally runs art 13.4 VDC.  Usually the battery conditioning occurs while I am at work.  However when I am off work I may actually be operating when this battery conditioning is taking place.  I may need to think about putting a regulator in the case to manage this. 

I think I will use a regulator similar to a boost regulator (link below) that I use in my ham station to charge my laptop.  These produce no RF noise, at least in my use they haven't, and provide a stable regulated voltage.  This model is only about $6.00.  A little more expensive model put out by droke even has a current limiting feature.  I have some of those too.  This will likely be my solution to limiting the DC power to my UBITX on my solar power system.

https://www.ebay.com/itm/150W- DC-DC-Boost-Converter-10-32V- In-to-12-35V-Out-6A-Step-Up- Voltage-Charger-US/ 192032921916?epid=2074479052& hash=item2cb60dd93c:g: 62IAAOSwImRYMgDy:sc: USPSFirstClass!47885!US!-

Thanks for the great information
--
73, W9KJO
Walter


New for pi-day, the Rasberry Pi 3 B+

Jerry Gaffke
 

Many of us feel tau-day is the more significant:  https://tauday.com/
but pi-day is worth celebrating.
Cuz there's a new Rasberry Pi model out, an upgrade of the Rasberry Pi 3:
    https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus/#buy-now-modal
    https://www.raspberrypi.org/blog/

Of interest to Bitx'rs wishing for a fully portable rig capable of standalone digital operations. 
Perhaps use Bluetooth into your smartphone for a display:
    https://www.adafruit.com/product/1697

Though I'd still want a basic CW mode to fall back on when one of those billions of transistors goes south.

Jerry, KE7ER

Re: Officially done with my uBITX!

 

A new shot with correct spelling of Transceiver:-(

Joel
N6ALT

Re: Officially done with my uBITX!

Randy
 

How are people labeling this stuff?

Randy

Re: Officially done with my uBITX!

 

I use a DYMO LetraTag label maker with clear tape in it. I bought it at WalMart for $18.00 plus the clear tape for $6.00. I have labeled many projects with it and it's paid for itself many times over.

Joel
N6ALT

Re: TDA2822 Audio problem #ubitx #tda2822

Lawrence Macionski <am_fm_radio@...>
 

How about a low pass filter at about 5Khz? you want voice audio, not violins..

Re: New for pi-day, the Rasberry Pi 3 B+

Doug W
 

On Wed, Mar 14, 2018 at 01:43 pm, Jerry Gaffke wrote:
Many of us feel tau-day is the more significant:  https://tauday.com/
can't we all just get along...



https://xkcd.com/1292/

Re: 13.8 v power supplies safe for bitx?

Walter
 

On Wed, Mar 14, 2018 at 01:28 pm, Jerry Gaffke wrote:
Had never heard of Drok, they have lots of stuff up on Amazon.
Does your Drok allow you to set the max current anywhere from 0 Amps to say 5 Amps?
Sorely needed.

Lots of cheap switchers out there now, but none of them seem to deal properly with current limiting.
Should be able to set both the regulated voltage and the max current.
If the load sucks too much current, the voltage drops until the current comes within the set limit.

Any of those switchers could do this for the price of an op-amp and a pot, maybe an extra $1.

Jerry, KE7ER
 

On Wed, Mar 14, 2018 at 12:47 pm, Walter wrote:
A little more expensive model put out by droke even has a current limiting feature.

Well, I had not thought about the current limit.

I installed one for the PA voltage that does not have the current limit feature.  I will change it out to the current limit model and use the voltage only for the board supply.

Now I just need to figure out how to adjust the current limit.  I think a resister network to draw current while I adjust it to the desired current level.  That would be a great safety feature.

Anyone have an idea about what the max safe current for the PA buss would be? 

--
73, W9KJO
Walter

adrino

wb7dmx@att.net
 

I am wanting to learn programing, looking at a starter kit r3, is this compatible with the one in the mbitx ?

Received my uBitx!

Joe Puma
 

Ordered Jan 17th. Got shipping notice 2 days ago and it showed up today in NY.

I’m 623/3

This is my TDA chip, am I safe? Lol



Now to get a cool case. 😎😎

Joe
KD2NFC