Date   
Re: new uBitx question

Jeff Karpinski (N0KAI)
 

On Mon, May 13, 2019 at 10:26 AM, Sam Tedesco wrote:
Yes...sounds like you might be way off. If you tune to 7.076 on lsb, you should hear digital mode. If you hear it at 7.074, you're way off.
Not aware of any digital mode using LSB. 7.074 USB is FT8, 7.076 USB is JT65.

Re: Dave West --PLEASE DELETE

Jerry Gaffke
 

Curious, I did see the photo in the group website.
Looks like it has since been deleted.

Jerry


On Mon, May 13, 2019 at 11:54 AM, Vince Vielhaber wrote:
Arv, I don't look at the group on the web unless I'm searching for something. The pic came as an email attachment.

Re: Dave West --PLEASE DELETE

Vince Vielhaber
 

Arv, I don't look at the group on the web unless I'm searching for something. The pic came as an email attachment.

Vince.

On 05/13/2019 11:33 AM, Arv Evans wrote:
Raj

Interesting that the photo is visible to some and not to others. I even
logged into the
BITX20 group to see if his post there showed the image but it was not
there. I am
using Firefox on Linux so maybe there is something different between
types of browser
being utilized by different people.

Arv
_._


On Sun, May 12, 2019 at 11:02 PM Raj vu2zap <@Raj
<mailto:@Raj>> wrote:

I can see the photo Arv, an old gentleman with a violin!

At 13-05-19, you wrote:
>Donald
>
>Seems that the photo did not come through. Maybe a good thing...?
>
>Arv




Re: Look at this on eBay, ubitx, budget test equipment.

Jerry Gaffke
 

It's very tough, to protect a radio installation from a direct lightning strike 
But it's well worth protecting your gear from high voltage electric fields.

Just the wind blowing on an antenna wire can build up a large static charge,
enough to blow out a radio front end.  
During an electrical storm, even though you may not get a direct hit to the antenna,
there will be high static charges floating around that can draw quite large sparks.

Here's an old thread describing some of the measures you can take.
    https://groups.io/g/BITX20/topic/18853788

Jerry, KE7ER


On Mon, May 13, 2019 at 05:02 AM, d balfour wrote:
I don't believe that any "lightning arrestor" is worth much. Just a step above deer whistles.
Lightning is going to do what it is going to do.

Re: VK4PP Ultimate uBitx Daughter Board. #ubitx #filters #parts

Cor Beijersbergen
 

Hello Nick,

I know you haven’t given the signal yet that the time window for ordering your board is opened. But I don’t want to be the one missing this opportunity because of a too late a reaction, therefor I would like to mention to you my interest in two of these boards.

 

Kind regards,

Cor – PA4Q

Re: new uBitx question

Jeff Karpinski (N0KAI)
 

On Mon, May 13, 2019 at 10:10 AM, newoldham wrote:
On several bands (20/40/80), I hear some garbled ssb, it's never very clear - but it may never be English I'm hearing.
Are you sure that's not just local AM stations? My uBitx was completely unusable at first - all bands, all frequencies, all i heard was the 50KW KOA "blowtorch". More sane AM signals will definitely sound like garbled SSB. Why the uBitx doesn't come with a BCI filter by default is a real head scratcher.

Re: new uBitx question

Curt
 

Craig

overall its a different sounding receiver - without AGC there is minimal (but enough) gain available. 

based upon your description - I wonder if the BFO adjustment is way off.  Before concluding this, tune very slowly to see if you can get the SSB signals tuned in.  When the BFO is properly adjusted SSB should sound very nice. 

note AM signals are received as one of the sidebands - so not possible that AM can sound good but not SSB. 

Curt

Re: new uBitx question

newoldham
 

Ok, back to it finally - tiny bit of new input:

Was able to tune in a local AM station - sounds decent - tuned BFO with that, for better or for worse, but in the end, it was already ALMOST ok, and now it is certainly "listenable."

The strong tones were NOT present near that particular station.

I take back what I said before, sometimes it disappears entirely if I unhook the antenna, other times, it stays.  Two different problems, I suspect.

On several bands (20/40/80), I hear some garbled ssb, it's never very clear - but it may never be English I'm hearing.  I know the bands aren't grand right now, and I'm not expecting to catch a lot of conversation - my sdr pretty much
confirms the few noises I hear.  But far too often - the annoying tone comes with the SSB - what is it that I'm hearing?

however - on 40m and less so 20m, i hear an absolute ton of CW - and it never has an interfering tone.  Clear and lots of it, I'm having fun getting back into it.  My main plan for this thing was CW anyway.  This pretty much confirms it's an artifact of the SSB decode process - no?

So to summarize...CW crystal clear - I have not transmitted yet - and SSB miserable, while broadcast AM is fine. 



Re: Look at this on eBay, ubitx, budget test equipment.

iz oos
 

My HF antennas are DC short circuited but I always unplug them when not in use. You probably can add a bleed resistor across or eventually an inductor big enough and with a high inductance, but in any case unplug it, always.


Il 13/mag/2019 18:04, "Kelly Mabry" <kmabry2007@...> ha scritto:
And no I did not unplug the antenna. I usually do unplug as a habit, however this time i did not.
73,

Kelly K5AID 

Re: Look at this on eBay, ubitx, budget test equipment.

Kelly Mabry
 

And no I did not unplug the antenna. I usually do unplug as a habit, however this time i did not.
73,

Kelly K5AID 

Re: Look at this on eBay, ubitx, budget test equipment.

KM4TRT
 

I also have a cheap (50) signal generator(feeltech 3200s dual channel).0-30 MHz  It does most everything I want for HF and was able to trace the signal on several bit x's with my scope.  The only thing Is that dual channel does not output two different frequencies, so you can do dual tone.
I'm certainly no expert, but I bought a scope for $50 at a ham fest and found it somewhat difficult to use.
I bought a digital new (Hantek) for 200 and love it .  I can run dual traces and it goes to 200 MHz.  Actually tested with an arduino generator and it was over 200 MHz before the signal detererated.

Andy kKM4TRT

Re: Look at this on eBay, ubitx, budget test equipment.

Kelly Mabry
 

Hi guys, thanks for all the recommendations and ideas. 
All of these ideas are not just food for thought, It is a meal worth savoring... thank you everyone. I am going to remove the AGC for now, restore the severed rf path and evaluate. 

73, and thank you everyone!
Kelly K5AID 

Re: Dave West --PLEASE DELETE

Arv Evans
 

Raj

Interesting that the photo is visible to some and not to others.  I even logged into the
BITX20 group to see if his post there showed the image but it was not there.  I am
using Firefox on Linux so maybe there is something different between types of browser
being utilized by different people.

Arv
_._


On Sun, May 12, 2019 at 11:02 PM Raj vu2zap <rajendrakumargg@...> wrote:
I can see the photo Arv, an old gentleman with a violin!

At 13-05-19, you wrote:
>Donald
>
>Seems that the photo did not come through.  Maybe a good thing...?
>
>Arv




Re: 3rd Party Raduino Board #radiuno

Mike Short
 

I have purchased several from them, and they are an improvement over the stock Raduino. You will not be disappointed. The boards they sell for the jacks are very nice as well. 
Mike
AI4NS 

Re: How to stop worrying and love the uBitx #ft8 #cat #antennas #ubitx

Vince Loschiavo
 

Gerry
which kit is that in the tin??
vince

Re: How to stop worrying and love the uBitx #ft8 #cat #antennas #ubitx

Gerry Kavanagh
 

Looks like a posh version of this:

3rd Party Raduino Board #radiuno

Ted
 

I've seen the TSW board kit and it looks nice enough. What else do folks here choose from when they're sure their Raduino is toast?  Which is the "preferred" sourcing for these ?

Please don't recommend simply asking other users for their excess stock, as that's obvious (and risky, unless the Nano is socketed apart from the Raduino).



73,
Ted
K3RTA


Re: Look at this on eBay, ubitx, budget test equipment.

iz oos
 

Hi, do you know the chip inside? AD9851 maybe? How many dbm is it rated?


Il 13/mag/2019 14:11, "Richard Seguin" <richard.seguin@...> ha scritto:
I have a signal generator like the one that you posted.  It's working
well for me so far.  I suggest building a 6dB attenuator and hooking
the sig gen to that when you want to measure RF signals though.

Richard (VE1X0R)



Re: Look at this on eBay, ubitx, budget test equipment.

Curt
 

Kelly

first, best to unplug rig from antennas even when you have lightning arrrestors.  or be blessed by a switch that grounds antennas not in use. 

second, I am still thinking storm may not have taken out your ubitx.  yes try soldering something across that RF attenuator to effectively move it out of the circuit - let's hope it is this simple!  If this AGC is installed similar to the VK3YE - there are no ubitx connections changed - so I am doubting it is in the act.  I really think it may be something simple that has opened up. 

17 wpm - I would not fret your CW capability - this is nearly top end for straight key use.  plenty of QSOs can happen at that speed. 

73 Curt

Re: Look at this on eBay, ubitx, budget test equipment.

Richard Seguin
 

I have a signal generator like the one that you posted. It's working
well for me so far. I suggest building a 6dB attenuator and hooking
the sig gen to that when you want to measure RF signals though.

Richard (VE1X0R)