Glad all good with your build. Any idea why mine will not compliie? Using
the same sketch just keep getting the error message above.

Thanks for any help you can offer Vaugh

On Sun, Apr 14, 2019, 11:00 Fast hosts <beneagles71@...> wrote:

That worked for me using the old boot loader and yes the ten turn
removed
those annoying clicks. Now I find when getting close to the end of the
tuning range the frequency gallops.. did I read that the addition of a
component to each end of the pot cured this? I have also added the push
button to enter settings menu and extended the frequency range ...
1.28.1
certainly makes it much more useful... a worthy companion of my UBITX...
now I use that whilst continuing with my Jackal conversion..

On Sun, 14 Apr 2019 at 10:41, MVS Sarma <mvssarma@...> wrote:

Try with ide 1.8.5
Define mega328p old bootloder

Regards
Sarma vu3zmv

On Sun, 14 Apr 2019, 12:47 pm Vaughn <vlkteach@... wrote:

Hi, been reading some of the topics here and yo are all very advanced
for my build. I am only just starting so need some help please, I hope
to
add some of your mods later.

I have a BITX40 and it has a ticking when I tune the frequency. I have
read that a fix is added by replacing the 1 turn pot with a 10 turn.
This
also needs changes to the sketch in the arduino.

I have downloaded the Arduino IDE and the new sketch, raduino_v1.28.1.
The problem I have is when compiling the sketch. I get the error ,

Not used: C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\libraries\Adafruit_Circuit_Playground

exit status 1
redefinition of 'struct userparameters'

I think I have added all the required libraries but this will still
not
compile. I can see the problem is possibly in the name changes of
definitions, but this is as the sketch has been modified by so many
and not
rewritten. should still work but what have I missed?

any ideas please? I know you are all way ahead of my build, but until
I
complete this and so learn from this, I cannot start your mods or mods
of
my own. Please any help given will be most welcome.

Vaughn

--
Keith Baker - Communications technician (retired)

Content-Type: text/html; charset=utf-8
X-MIME-Autoconverted: from 8bit to quoted-printable by jax4mhob18.registeredsite.com id x3E8noRV134407

Thanks Raj.?? I'll pick up some 51pF caps Monday.?? My local parts shop gets worried
if they haven't seen me in a day or two...

I'll try parts I have on hand first.?? Otherwise, it'll be time to put together another
Digikey order...?? I noticed I should have some Murata LQW2BASR33J00L unshielded
parts that I picked up for a Radioberry build.

This is the placement I'm planning, mostly because I'd already cut the trace from R27 to C10
in two places for the previous filter and this will cover the cuts.

- John




On 4/14/2019 12:28 AM, Raj vu2zap wrote:

John,

see this earlier post of mine


/g/BITX20/message/62097

Raj

At 13-04-19, you wrote:

I was about to dig into my parts bin searching for toroids and
I remembered I had those left over.

I'll probably have to order some 30 uH parts.? 27 and 33 are easy to
get locally, 30 maybe not.

Sounds like the way to go, thanks.

John


On 4/13/2019 6:28 AM, Raj vu2zap wrote:

John,

Very neat job on L5 and L7.

Make the 45MHz IF new filter with SMD parts. What seems to be the culprit
is any vertical wire leads in that area
causes trouble. Solder the SMDs directly on the board.

When I get back to town tomorrow I will try it.

Raj

John,

see this earlier post of mine

/g/BITX20/message/62097

Raj

At 13-04-19, you wrote:

I was about to dig into my parts bin searching for toroids and
I remembered I had those left over.

I'll probably have to order some 30 uH parts.  27 and 33 are easy to get locally, 30 maybe not.

Sounds like the way to go, thanks.

John


On 4/13/2019 6:28 AM, Raj vu2zap wrote:

John,

Very neat job on L5 and L7.

Make the 45MHz IF new filter with SMD parts. What seems to be the culprit is any vertical wire leads in that area
causes trouble. Solder the SMDs directly on the board.

When I get back to town tomorrow I will try it.

Raj

I was about to dig into my parts bin searching for toroids and
I remembered I had those left over.

I'll probably have to order some 30 uH parts. 27 and 33 are easy to get locally, 30 maybe not.

Sounds like the way to go, thanks.

John


On 4/13/2019 6:28 AM, Raj vu2zap wrote:

John,

Very neat job on L5 and L7.

Make the 45MHz IF new filter with SMD parts. What seems to be the culprit is any vertical wire leads in that area
causes trouble. Solder the SMDs directly on the board.

When I get back to town tomorrow I will try it.

Raj

Thanks Curt. I probably meant C212 which is 22pf. Gets a little rough remembering component numbers when youre trying to recount. :) ?

?

On Apr 13, 2019, at 8:56 PM, Curt via Groups.Io <wb8yyy@...> wrote:

Joe

C215 is part of the matching circuitry used with the 45 MHz xtal filter -- 0.1 uF is a pretty large value at 45 MHz -- and it is large enough that it resonates with the coil way above this.? it seems to be a capacitive voltage divider to aid in impedance matching the filter.? possibly what you used is just fine -- I don't fret if I have to replace a SMT with a leaded part.? at these low frequencies the physical size of the cap isn't a big deal - when it fits the space.?

John

FB on your mods - those relays are said to often to fix the harmonics, and sometimes also help with mixer spurious.? the new filter you added is intended to fix SSB spurs on 15/12/10m.?

on 12m I think I see your spurious down at - 39 dBc.? that is ever so close to the goal (much better than my - 34 dBc) that if you experiment with slightly less audio drive you may be compliant enough.?

I think what you did was adding a new LPF placing it between the 'bi-directional amplifier' and the 'final mixer on transmit' (aka first receive mixer) - juslike v5.? I am especially curious with this result - and if you think it gave you some spur reduction - great news.? Raj is doubting the vertical orientation but your results seem to be good.? check your CW output now especially on 40 and 80 meters -- hopefully at least 5w on 40m and more on 80m.? (my rig and some v4's appear to be 'haunted' on CW whenever parts are added here to fix the SSB spurs).?

possibly your rig is doing well.? nice instrument you have there.? enjoy your work.

Curt

There is a uBitx "keying" board by W0EB on QRP Guys, might be relevant to your issue.



73 Jack KZ5A

This is a V3 that has new relays and the L5/L7 fix and working on the LPF
that I believe is before the mixer, but I'm not sure.

I've been taking measurements at each step.? So far not significant drops.
I had some crazy readings which where later explained by one of the techs saying,
"don't use that one..." but at least it was consistent in relative readings.

That said, I do see power go down with frequency across all changes regardless of mods.
I think I saw a mod for that, but that one's probably not for me.? We'll see.

On 12m I saw 32, 16, and 12Mhz
<pjeijlfghkjpbbdb.jpg>

On 10m, I had 32, 16, and 12MHz and then 7.86 MHz
<cpmofleofcibhidm.jpg>


On 4/13/2019 3:22 PM, Curt via Groups.Io wrote:

John

very good - I am interested in your results on this, and which ubitx version you have.?

on 12m you might notice 2 spurs on either side of the carrier about 5 MHz apart,? the v5 comes with a LPF similar to you have drawn already installed.? I tried one using SMT inductors on my v4 -- not much change -- not surprising since the spurs are close to carrier.? I did change R26 on mine, but I still have stock 2n3904 transistors (if I were bored I might see what better old stock transistors I might have for 45 MHz - but that might be an adventure).?

on your 12 and 10m readings you are mostly focused on harmonics of the RF output.? either your close-in spurs are good -- or you didn't notice them??

you could be a little confused as this LPF is described as filtering harmonics of 45 MHz.? one of those 2 spurs I mentioned seems to be 90 MHz - the LO frequency.? the other spur I think is the PA signal leaking back to the mixer, and mixing again. ?

with any changes you make in this part of the circuit - do see if you get any reduction of CW output power -- mine does a bunch on 40 and 80 meters. ?

73 Curt
?

<cpmofleofcibhidm.jpg>