Date   

Re: Got a fan mounted #v6

Bob Lunsford
 

As cheap as those little fans are concerned, I never-ever lubed a fan bearing. I have lubricated Oilite bearings in larger motors like in window fans, though. I must have collected a dozen of the little fans, though, and these are used where needed. Depending on the fan design, I usually put a resistor in series with them to slow them down and cause less possible noise in the shack. Not all fans will allow you to do this, however. Just like not all LED lights can be electrically dimmed.

On Thursday, June 11, 2020, 12:02:04 AM EDT, Mark - N7EKU <n7eku@...> wrote:


Or half a drop (or less),

A full drop is too much for computer fan bearings and will add noise.  You just need enough to wet the spindle and not make a puddle.  At least in my experience that's what I've found.

If you spray some WD-40 in a container and let the solvent evaporate, all you are left with is a very viscous oil type compound (thicker than gear oil).  I found this out at work where I was keeping some in a small glass bottle.  It's good for long term water repelling (like for door locks etc), but not so good for fan or electric motor bearings where you generally want a light oil.  Should be good for pot shafts and things like that though as mentioned above.

73.


Re: Got a fan mounted #v6

Bob Lunsford
 

WD-40 is composed of some lubricant  and bees' wax. After I spray some in an old paint can lid and use a tooth pick to deposit it, I usually use a #1 Philips head screwdriver, the little bit of WD-40 is discarded. I don't want it laying around waiting for Murphy to upset it and leave a puddle on the workbench. An I use it for stopping noisy pots on the wiper that contacts the paper saturated with carbon. It's to kill the electrical noise, not to lub the shaft.

Sorry I did not make that very clear.

On Thursday, June 11, 2020, 12:02:04 AM EDT, Mark - N7EKU <n7eku@...> wrote:


Or half a drop (or less),

A full drop is too much for computer fan bearings and will add noise.  You just need enough to wet the spindle and not make a puddle.  At least in my experience that's what I've found.

If you spray some WD-40 in a container and let the solvent evaporate, all you are left with is a very viscous oil type compound (thicker than gear oil).  I found this out at work where I was keeping some in a small glass bottle.  It's good for long term water repelling (like for door locks etc), but not so good for fan or electric motor bearings where you generally want a light oil.  Should be good for pot shafts and things like that though as mentioned above.

73.


Re: Got a fan mounted #v6

 

Or half a drop (or less),

A full drop is too much for computer fan bearings and will add noise.  You just need enough to wet the spindle and not make a puddle.  At least in my experience that's what I've found.

If you spray some WD-40 in a container and let the solvent evaporate, all you are left with is a very viscous oil type compound (thicker than gear oil).  I found this out at work where I was keeping some in a small glass bottle.  It's good for long term water repelling (like for door locks etc), but not so good for fan or electric motor bearings where you generally want a light oil.  Should be good for pot shafts and things like that though as mentioned above.

73.


Re: Got a fan mounted #v6

Bob Lunsford
 

I also found a drop of WD-40 works fine for fans and also to clean noisy contacts and pots. I may spray a very quick shot into a pot but for contacts and bearings, I spray a small quantity into a paint can lid and use a Q-Tip of a toothpick to transfer the oil.

I also have used 3-in-1 oil and it works fine but that was eons ago. After WD-40 came along, it's what I prefer. Everyone to his own, though. If someone prefers Doxit (sp?), fine

Bob — KK5R

On Wednesday, June 10, 2020, 7:42:57 PM EDT, Bill Cromwell <wrcromwell@...> wrote:


Hi,

A drop of light oil on the spindle helps those fans along. Look for
sewing machine oil or "3-in-1" brand. That can make a fan that won't run
at all run again. There may be a label glued over the spindle bearing
end. Peel it back or off. Apply a drop of oil and spin the fan with your
finger. Press the label back on to help keep out dirt. Plug it back in.

73,

Bill  KU8H

bark less - wag more

On 6/10/20 7:34 PM, Zac T wrote:
> So I was able to take an old 12v case fan and mount it to the back of
> the uBitX case.  After flipping some wires around on the connector I was
> able to plug into PWR_FLAG and run the fan.  Only problem I had was I
> found out after mounting the fan there is a bearing that needs some time
> to warm up.  Until then it is loud but after a bit, it runs fine. 
> Probably only added .1 amp draw from the source.  I need to expand out
> the vents in the back but it is defiantly pulling air though the case
> and away from the heat sinks on the finals.
>




Re: Got a fan mounted #v6

Zac T
 

I'll try it, thank you for the tip.


Re: Fading during receive #ubitxv6

Bob Lunsford
 

Propagation has a bearing on WWV signals. This works with time of day and some other factors. Depends on where you are located relative to WWV's transmit locations (Colorado or Hawaii).

The antenna is also a huge factor on transmit and receive. A G5RV works for some on some frequencies but while I have a G5RV, I also have an endfed dipole with 53-ft radiating element, 16-ft counterpoise and 20-ft of coax feedline fed through a 1:1 balun to decouple the feedline so RF does not get into the shack. Also, the feedline MUST be below the counterpoise angled down at 45-deg from the 9:1 unun.

If you have another radio, check to see if the signal levels are better or pretty much parallel to what you get on the V6. This way, you can get an idea if the V6 is not processing the signal as it should and indicate some problem with the RF/IF stage/s.

Let us know or your further findings.

Bob — KK5R

On Wednesday, June 10, 2020, 9:53:03 AM EDT, KB9WOO <kb9woo@...> wrote:


I think I need to be educated a little, or maybe I need a better antenna or location (ok, I know both are true).  I am noticing that when tuning in a signal, it will be ok for a moment, then seems to fade away and I have to chase it to tune it back in.  Is that just SSB and/or weak signal, or could it be something with the radio?

I thought I may have buggered my frequency alignment a bit so I don't know if maybe I have multiple things going on.  I have been using an end fed no tune kit from QRPguys, but don't have much height.  Sometimes I can get WWV and sometimes not, so maybe I'm getting ahead of myself blaming the alignment.  I do not have an antenna tuner, either.  When I do get WWV, it is very weak.

As far as a better antenna, I'm leaning strongly towards a mag loop.  I think that could better suit my operating environment/conditions.

So, is this fading to be expected/normal with my less than optimal antenna height and location, or what do I need to learn?

Just looking for ideas, pointers, education, chitchat on these things.

Thanks all.

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: Got a fan mounted #v6

Bill Cromwell
 

Hi,

A drop of light oil on the spindle helps those fans along. Look for sewing machine oil or "3-in-1" brand. That can make a fan that won't run at all run again. There may be a label glued over the spindle bearing end. Peel it back or off. Apply a drop of oil and spin the fan with your finger. Press the label back on to help keep out dirt. Plug it back in.

73,

Bill KU8H

bark less - wag more

On 6/10/20 7:34 PM, Zac T wrote:
So I was able to take an old 12v case fan and mount it to the back of the uBitX case.  After flipping some wires around on the connector I was able to plug into PWR_FLAG and run the fan.  Only problem I had was I found out after mounting the fan there is a bearing that needs some time to warm up.  Until then it is loud but after a bit, it runs fine. Probably only added .1 amp draw from the source.  I need to expand out the vents in the back but it is defiantly pulling air though the case and away from the heat sinks on the finals.


Got a fan mounted #v6

Zac T
 

So I was able to take an old 12v case fan and mount it to the back of the uBitX case.  After flipping some wires around on the connector I was able to plug into PWR_FLAG and run the fan.  Only problem I had was I found out after mounting the fan there is a bearing that needs some time to warm up.  Until then it is loud but after a bit, it runs fine.  Probably only added .1 amp draw from the source.  I need to expand out the vents in the back but it is defiantly pulling air though the case and away from the heat sinks on the finals. 


Re: Fading during receive #ubitxv6

Dale Parfitt
 

Magnetic loops (or more correctly, Small Transmitting Loops) unless very carefully designed are an  inefficient antenna. This is not an issue for receiving HF, but is a poor choice for transmitting from  a low power rig. The more efficient the loop is, for a given diameter) the narrower is the bandwidth- this then requires constant retuning of the antenna as you QSY. Mounting the STL close to the ground (despite what you might read on the internet) then also introduces ground losses into an already inefficient antenna.

I would go with Allison’s and other’s recommendations to try to improve your current antenna. QSB (fading in signal strength) is  perfectly normal on signals propagated by the ionosphere.

Try different bands at different times of the day and have fun,

 

Dale W4OP

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of ajparent1/kb1gmx
Sent: Wednesday, June 10, 2020 5:46 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Fading during receive #ubitxv6

 

On Wed, Jun 10, 2020 at 06:35 AM, KB9WOO wrote:

As far as a better antenna, I'm leaning strongly towards a mag loop.  I think that could better suit my operating environment/conditions.

Compared the wire you are using its likely not going to be a better antenna,
expensive likely but not better.

Making an effort to get what you have higher up might help depending on how high it is
and what direction its oriented.
 
Likely you have more than one issue as well.  But from what you wrote its
hard to tell where to start. 

Allison


Re: Fading during receive #ubitxv6

ajparent1/kb1gmx <kb1gmx@...>
 

On Wed, Jun 10, 2020 at 06:35 AM, KB9WOO wrote:
As far as a better antenna, I'm leaning strongly towards a mag loop.  I think that could better suit my operating environment/conditions.
Compared the wire you are using its likely not going to be a better antenna,
expensive likely but not better.

Making an effort to get what you have higher up might help depending on how high it is
and what direction its oriented.
 
Likely you have more than one issue as well.  But from what you wrote its
hard to tell where to start. 

Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO


Re: Fading during receive #ubitxv6

Jeff Debes
 

  Good luck , let us know how its working!



On Jun 10, 2020, at 4:17 PM, KB9WOO <kb9woo@...> wrote:

That makes sense and I'm glad I asked.  Thank you.

--
Mark, kb9woo
Milwaukee, WI uBITX v6

--
jeff.debes@...


Re: Fading during receive #ubitxv6

KB9WOO
 

That makes sense and I'm glad I asked.  Thank you.

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: Fading during receive #ubitxv6

Robert D. Bowers
 

That is most likely propagation conditions, unless you mean the frequency is shifting ("drift") - which would be rather unlikely with the newer rigs.  It's not unusual at all to have signals fade in and out - especially when conditions are marginal.

As far as WWV... that too is very dependent on conditions.  We're just coming off of a sunspot minimum, and most of the time WWV reception here was marginal at best (depends a lot on the time of day as well).

Bob
N4FBZ

On 6/10/20 9:35 AM, KB9WOO wrote:
I think I need to be educated a little, or maybe I need a better antenna or location (ok, I know both are true).  I am noticing that when tuning in a signal, it will be ok for a moment, then seems to fade away and I have to chase it to tune it back in.  Is that just SSB and/or weak signal, or could it be something with the radio?

I thought I may have buggered my frequency alignment a bit so I don't know if maybe I have multiple things going on.  I have been using an end fed no tune kit from QRPguys, but don't have much height.  Sometimes I can get WWV and sometimes not, so maybe I'm getting ahead of myself blaming the alignment.  I do not have an antenna tuner, either.  When I do get WWV, it is very weak.

As far as a better antenna, I'm leaning strongly towards a mag loop.  I think that could better suit my operating environment/conditions.

So, is this fading to be expected/normal with my less than optimal antenna height and location, or what do I need to learn?

Just looking for ideas, pointers, education, chitchat on these things.

Thanks all.

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: #v6 For sale, #v6

R. Tyson
 

I have the V5 and it works a treat. I am just part way through improving my antenna but even with a low dipole and not very good band conditions it has been working into Europe on 40m.

There are those who buy the rig not having properly read up about it. They are then dismayed when they find they have to do some work and find the information they want. It's all there and not difficult to access. They also expect ... who knows ? but not apparently what they get.

There are loads of people happily using their uBitX and are very happy with it. Take your time putting it together. Use a dummy load to check output and make sure you have an antenna with an acceptable SWR then.......    just enjoy the rig.

Reg                   G4NFR


Re: #ubitxv6 #ordering #ubitxv6 #ordering

mike wilsher
 

I bought mine through Gigaparts since I figured it would be a while to order directly, glad to hear they are shipping quickly. It takes mabe 20 mins. to build the radio,... instructions are on their web site. I'll be posting a review probably this weekend.

Thanks,
   Mike W.

ACTIVE - PGP/FP : B7CE DE07 489C 682A 1536 CA08 0778 C816 A80E AC94
NO NOT USE -  PGP/FP  : 282B C14D 3570 10F9 49F0 E207 9B6B FDB0 A968 2E4A


On Wed, Jun 10, 2020 at 10:45 AM Alex <abmurphy2011@...> wrote:
I just want to reflect on the ordering/shipping process for my ubitx V6.  I just received my kit last evening.  I am amazed at the shipping time. It was ONLY 3 DAYS from Hyderabad, India to my cottage on a mountain in western North Carolina USA.  I was anticipating a longer delay best case, or not getting it at all as the worse case.  But this service was really great.

Looking forward to putting the radio together and making contacts after a 20-year-long break-in being active in the hobby,

Alex,
WD2T
former WB3IRV, HL9VI, WD2T/MM


#ubitxv6 #ordering #ubitxv6 #ordering

Alex
 

I just want to reflect on the ordering/shipping process for my ubitx V6.  I just received my kit last evening.  I am amazed at the shipping time. It was ONLY 3 DAYS from Hyderabad, India to my cottage on a mountain in western North Carolina USA.  I was anticipating a longer delay best case, or not getting it at all as the worse case.  But this service was really great.

Looking forward to putting the radio together and making contacts after a 20-year-long break-in being active in the hobby,

Alex,
WD2T
former WB3IRV, HL9VI, WD2T/MM


Fading during receive #ubitxv6

KB9WOO
 

I think I need to be educated a little, or maybe I need a better antenna or location (ok, I know both are true).  I am noticing that when tuning in a signal, it will be ok for a moment, then seems to fade away and I have to chase it to tune it back in.  Is that just SSB and/or weak signal, or could it be something with the radio?

I thought I may have buggered my frequency alignment a bit so I don't know if maybe I have multiple things going on.  I have been using an end fed no tune kit from QRPguys, but don't have much height.  Sometimes I can get WWV and sometimes not, so maybe I'm getting ahead of myself blaming the alignment.  I do not have an antenna tuner, either.  When I do get WWV, it is very weak.

As far as a better antenna, I'm leaning strongly towards a mag loop.  I think that could better suit my operating environment/conditions.

So, is this fading to be expected/normal with my less than optimal antenna height and location, or what do I need to learn?

Just looking for ideas, pointers, education, chitchat on these things.

Thanks all.

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: Power mic wiring

 

Any mic its best to add a cap in the mic so it becomes interchangeable.

At 10/06/2020, you wrote:
I missed the cap question. The mic I have already had a cap in the mic output so I did not need one. I would check your mic, though I would be very surprised if it did not have a dc blocking cap on the output.

73
Evan
AC9TU


Re: Power mic wiring

Evan Hand
 

I missed the cap question.  The mic I have already had a cap in the mic output so I did not need one.  I would check your mic, though I would be very surprised if it did not have a dc blocking cap on the output.

73
Evan
AC9TU


Re: Power mic wiring

Evan Hand
 

I have mine wired with
1 - ground to the sleeve of the 3.5 mm plug
3 - PTT to the 3.5 mm ring
4 - Audio (I assume that is mic) to the 3.5 MM tip

I have a 4 pin connector on the mic, so the pin numbers are different.

73
Evan
AC9TU