Date   
Re: Help to point me into right direction

Tommaso Ravaglioli
 

Hi Robert,
for ISS the Baofeng is a good start, and it is great even starting to
receive SSTV images. If you want to just receive, an handheld scanner
or an SDR stick will give you the taste of space ops.
But ISS is not a satellite, is more similar to a QSO with a fellow
ham. Pretty much any handheld will do, with a cell phone or a computer
to decode SSTV and get the hang of things like orbital mechanics.
The choke point is astronauts availability, which is quite scarce
commodity, nowadays. So the biggest chance is to connect with
automatic systems, mostly the APRS digipeater or the SSTV downlink.

Cheers,
Tommaso

Il giorno mer 27 nov 2019 alle ore 08:29 <forest.roby@...> ha scritto:

Dear All,

This dual band bussiness was new to me... farher google seaches convinced me that "cough*Baofeng*cough" is a good start. Might be a good project to build an amplifier for it, if possible.
Thanks for the help.

Sorry for the off topic!

Robert

Re: Antuino Can it measure the RF Output Watts

iz oos
 

I believe we could that rather easily adding a directional coupler and an attenuator to bring down the full power at say - 20 or - 30dbm and using PWR mode. I would be interested too.


Il 26/nov/2019 20:53, "Alex Kelly IWUK via Groups.Io" <iwuk=btinternet.com@groups.io> ha scritto:
Hi

Ive bought the Antuino and im extremely pleased with it. What this little beauty does is amazing and makes me wonder how I managed with out it? I have one question though please. Can it measure the RF Output Watts from a radio without damaging it and if so up to how many or is it just milliwatts of RF input power? Ive watched the YouTube video of the guy using it for RF power reading through a small aerial but not the result Id like to use it for?

Many thanks

Alex Kelly

Re: #ubitx-help µBitx wiring - one stupid question #ubitx-help

MVS Sarma
 

On Wed, Nov 27, 2019 at 12:49 PM Przemek <przemek.naganski@...> wrote:
Hi Folks!
I have one stupid question about mic, speaker and key socket. That's exactly what I mean by pin numbering, just like the picture below or otherwise?

Re: Antuino Can it measure the RF Output Watts

 

The Antuino measures max -20dbm. i.e 1/100 of a milliwatt.
You will need 50db attenuator for 1W or 60db for 10W and so on.
The initial attenuator that connects to the transmitter MUST be
able to handle the watts!

Raj


At 27/11/2019, you wrote:
Hi

Ive bought the Antuino and im extremely pleased with it. What this little beauty does is amazing and makes me wonder how I managed with out it? I have one question though please. Can it measure the RF Output Watts from a radio without damaging it and if so up to how many or is it just milliwatts of RF input power? Ive watched the YouTube video of the guy using it for RF power reading through a small aerial but not the result Id like to use it for?

Many thanks
[]

Alex Kelly

Re: Help to point me into right direction

forest.roby@...
 

Dear All,

This dual band bussiness was new to me... farher google seaches convinced me that  "cough*Baofeng*cough" is a good start. Might be a good project to build an amplifier for it, if possible. 
Thanks for the help.

Sorry for the off topic!

Robert

#ubitx #ubitx-help How to recognize the PCB/hardware version #ubitx #ubitx-help

Przemek
 

Question as in topic. I recently bought uBitx and I would like to specify which version I have, unfortunately there are no markings on the PCB 
I haven't connected the radio yet.

#ubitx-help µBitx wiring - one stupid question #ubitx-help

Przemek
 

Hi Folks!
I have one stupid question about mic, speaker and key socket. That's exactly what I mean by pin numbering, just like the picture below or otherwise?

Cec v1.2 software question

barry halterman
 

I have a question with the CEC v1.2 firmware that I am running in my V4 ubitx. Can someone explain to me how or what happens when the ATT (attenuator) is enabled in software? What would cause receiver sensitivity to be better with the ATT on and adjusting the slider half way to the right, then when the ATT is turned off?
Thanks
K3BO

Re: Newbie Support Pages?

Curt
 

Stephen

the information overload can be vast.  if you want to enjoy your stock build - just use the supplied instructions and web content at HF signals. 

there is one pertinent detail to think about - what type of display to you plan to end up with?  I am thrilled with the stock LCD (okay boring but it does the function for many of us around the globe, with low electricity) - but if you plan to upgrade that will influence your case (many options here - mine is in a amateurradiokits case from India.  BTW he has nice building info at ubitx.com last I knew). 

please note the v5 being sold now is said to require no mods.  many additions are rather simple - just AGC and a S-meter-like movement, my CW filter is still external until I build another one to integrate. 

enjoy your build and operation of the rig - yes turn off the info overload until you are ready.

73 Curt

Re: Gordon Gibby Digital Interface Blank boards

Curt
 

My thanks to both of you for your contributions to melt-solder ham radio.  The relay board works and its installed.  I have the nice digital interface kit available for building this winter. 

Okay the Thanksgiving holiday on Thursday is unique to the US -- but happy thanksgiving to all in the world-wide BITX community. 

73 Curt wb8yyy

Re: Gordon Gibby Digital Interface Blank boards

Gordon Gibby
 

Thanks for all you did on this!!!


On Tue, Nov 26, 2019 at 6:08 PM N8DAH <Dherron@...> wrote:

I have discontinued the kit and have posted the last 25 boards.

The relay kit only has a few left as well.

Digi Boards: https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=122

Relay kits: https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=119

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Gordon Gibby Digital Interface Blank boards

 

I have discontinued the kit and have posted the last 25 boards.

The relay kit only has a few left as well.

Digi Boards: https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=122

Relay kits: https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=119

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

locked eBay scope find #off_topic

Doug W
 

This is off topic but I want to show off my new to me toy.  $87 ($71 + shipping) on eBay 100MHz  - 2 channel.  Pic is with cell phone audio function generator app and $15 Amazon probes.  Sure a new DSO would be nice but I dig the green glow. 



--
www.bitxmap.com

Antuino Can it measure the RF Output Watts

Alex Kelly IWUK
 

Hi

Ive bought the Antuino and im extremely pleased with it. What this little beauty does is amazing and makes me wonder how I managed with out it? I have one question though please. Can it measure the RF Output Watts from a radio without damaging it and if so up to how many or is it just milliwatts of RF input power? Ive watched the YouTube video of the guy using it for RF power reading through a small aerial but not the result Id like to use it for?

Many thanks

Alex Kelly

Re: Newbie Support Pages?

Arv Evans
 

There are some URL,s at the end of each message posting.  These give some pointers to BITX and uBITX basics.  There are other sites, but this is a good place to start.  

Arv. K7hkl
_-_


On Tue, Nov 26, 2019, 12:09 PM Stephen Wandling <swandling@...> wrote:
I am still planning to get a uBITX, just as soon as my 'projects' list is a bit shorter. Are there web pages that would be useful to a BITX newbie. I scan the posts here from time to time, but cannot seem to find the lower rungs on the ladder you folks have been climbing. 

I am definitely not new to ham radio, and I have built a lot of gear, from scratch and from kits. 

Any pointers to useful pages will be appreciated.

VE7NSD
Stephen

Re: Newbie Support Pages?

Jack, W8TEE
 

Try ubitx.net

Jack, W8TEE

On Tuesday, November 26, 2019, 2:09:03 PM EST, Stephen Wandling <swandling@...> wrote:


I am still planning to get a uBITX, just as soon as my 'projects' list is a bit shorter. Are there web pages that would be useful to a BITX newbie. I scan the posts here from time to time, but cannot seem to find the lower rungs on the ladder you folks have been climbing. 

I am definitely not new to ham radio, and I have built a lot of gear, from scratch and from kits. 

Any pointers to useful pages will be appreciated.

VE7NSD
Stephen

--
Jack, W8TEE

Newbie Support Pages?

Stephen Wandling
 

I am still planning to get a uBITX, just as soon as my 'projects' list is a bit shorter. Are there web pages that would be useful to a BITX newbie. I scan the posts here from time to time, but cannot seem to find the lower rungs on the ladder you folks have been climbing. 

I am definitely not new to ham radio, and I have built a lot of gear, from scratch and from kits. 

Any pointers to useful pages will be appreciated.

VE7NSD
Stephen

Re: Help to point me into right direction

Gwen Patton
 

Robert,
The important thing to know about amateur satellites is that nearly all of the still-functioning birds use a dual-band mode. The uplink frequency (what you talk on) is on 2m FM, and the downlink (what the satellite replies on) is usually 70cm FM. So your radio needs to operate on both bands, and be able to transmit on one while listening on the other at the same time. You'll also need some sort of dual-band beam antenna for both frequencies. There's a LOT of tutorials on how to make such antennas from common materials, but a pre-made example is an Arrow antenna, a portable, dual-band hand-aimed Yagi. The company was named "Arrow" because the original antennas were made from the aluminum shafts of target arrows, cut to the appropriate length.

The BitX and uBitX are great radios, but they're not the right bands to do this. They are HF radios, in bands from 80m to 10m, and they don't have FM modulation. You'll need some sort of 2m/70cm dual-VFO transceiver, probably a handheld. I've done this with a Yaesu VX-5r, back when mine still worked years ago. You can probably make a decent stab at it with a Baofeng or other cheap dual-band handheld, but you'd probably have better results with a radio that's a bit better made; those Chinese handhelds are made to be cheap, not to necessarily be good. It's possible to do it with one, but an Icom, Yaesu, or Kenwood -- or an Alinco, or some other international brand that ISN'T a cheap Chinese brand -- will probably serve you better.

Check the AMSAT.ORG website for more information, and search on Youtube for amateur satellite videos. I know that K6UDA just did one in the last week.

Now, since this is off topic, I'm going to back on out of here. 

73 and good luck,
Gwen, NG3P

Better photos of Amateur Radio kits AGC kit

KN4SMO <dtb2greenville@...>
 

Hi Since can't determine the layout from schematics could someone post a couple detailed photos of this kits layout please.

I see them in photos but not good enough.

Thanks Scott

Re: Help to point me into right direction

forest.roby@...
 

Dear All,

Thank you for the answers. All of them are really helpful.

Well I did a lot of research on the internet in the last couple of days. Not being a radio guru I might not have used the right words. 

If there is no DIY solution than I have to fined a suitable transceiver to buy ( on a budget ). Than again even the shipping cost can be a problem. Buying something heavy from the US can be expensive. I live in Hungary. But that is my problem. :) 
That "weekends project" looks promising, I already emailed them about the shipping.
That handheld radio is not really what I am looking for. I'd rather like something I can operate from my workshop.

About the antenna, I am hopeful that I can solve that. Maybe I am only wishful. :)

I am in progress to fire up my SDR console. Goal is to listen to weather satellites and ISS if possible. I have an antenna already but planning to build a V-shape -one as well. A transceiver would be a fine addition to this setup. 

Thank you again!

Robert