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Re: Linearity eeprom setting

Bj?rn Pasteuning - PD5DJ
 

Hi, I am getting more confused now lol.

I am talking about 0B and 0D

?

0B if the inductance line has a linear pitch 01 should be entered in the cell. The

default value is 00.

?

And

?

0D if the capacitances line has a linear pitch 01 should be entered in the cell.

The default value is 00.
Re: Linearity eeprom setting

 

I think you misunderstood the manual.

Linearity is a on/off switch. It disables a software formula that tries to overcome the lack of linearity of detection diodes. That should only be used if your hardware has some sort of logarithmic amplifier, which is not the case of the standard kits laying around

Installed capacitance and inductance values should be set on their respective EEPROM addresses 0x2* and 0x3* and are not related to linearity
Re: Linearity eeprom setting

Bj?rn Pasteuning - PD5DJ
 

Sorry, but what to you mean by '2**x'?
Re: ATU-100 Stopped Charging #atu-100

Kent K9EZ
 

I have the same issue. Worked for a couple of hours then the screen went blank.? It charges for about 10 minutes but nothing happens.

?

K9EZ
Re: Linearity eeprom setting

 

Hi. Any 2**x row. Exact values are difinited in other cells .?
Re: Hello and Schottky Diodes (D1, D2) Question

Bj?rn Pasteuning - PD5DJ
 

What about the IN34A diode used in the LDG AT100 ProII?

This one has even lower junction capacitance. 1pF @ 1mhz
Linearity eeprom setting

Bj?rn Pasteuning - PD5DJ
 

There are 2 linearity settings for L and C.

?

?

?

How do I interpret this?

?

Linear is:

?

10pf, 20pf, 30pf, 40pf?

?

Or

?

10pf, 20pf, 40pf, 80pf?

?

How must I interpret this?

?

73

Bjorn de PD5DJ

www.pd5dj.nl
Re: Max SWR

 

It depends upon your operating frequency and what type of load you're trying to tune. It's probably not the answer you're looking for.

Al, K2ZN

On Wed, Jun 22, 2022, 13:17 David M0TGC <davidn@...> wrote:
Can anyone tell me what is the max VSWR that the AT100 (3.2 firmware) can generally tune?

Thanks

Max SWR

 

Can anyone tell me what is the max VSWR that the AT100 (3.2 firmware) can generally tune?

Thanks
Re: ATU-1000 SWR Bridge adjustment question

Bj?rn Pasteuning - PD5DJ
 

I have performed a "calibration" but I think it is harder then suggested.

There are some factors playing in the ATU-1000 Situation.

1. When setting eeprom address 30 to 01, to activate highpower readout.

The tuner wont tune in Tune mode.

Settings this back to 00, low power readout,, tune works.

?

2. Eeprom address 31,How do I interpret the 20winding tandem bridge?

?

I have wound the bridge like I always do, inductor CCW, and the other CW.

Calibrating Power, I can follow?Vince - K8ZW procedure.. although when swapping the connectors, I have no power readout.

?

For SWR when having a 50ohm load.. reflected voltage is "zero", the ratio of voltage output of the 2 potentio meters have to be very very acurate.

?

I gues I have to calibrate the SWR bridget with 75/100/150ohm loads too.

?

Any advice on this?
Re: Programming & compiling from github source code

 

Kaz

You must be using an early version of the firmware, the internal reference is set in version 3.2 with:

? ADCON1.B0 = 1;? ?// ADC with the internal reference
? ADCON1.B1 = 1;
?
Re: Programming & compiling from github source code

Katsuhiko
 

Hi,

The ATU-100's power measurement issues have been resolved and are now tuned correctly.
There was a problem on line 63 of pic_init.c.

ADCON1 = 0xA0;

This will supply the ADC reference externally, so I changed it as follows.

ADCON1 = 0xA3;? ? ? ?// Internal reference
?
Kaz
JA7UIO
Re: Programming the PIC16F1938 with a MiniPro TL866-II Plus

 

It sounds like you've done your homework about the differences in the devices!

There's an open source program to control the minipro boxes. You can probably add the changes you've discovered for the PIC16F1938?to it easily and do yourself and everyone else a favor!



I use this program on Macintosh and linux all the time and it works very well for what's supported (currently roughly the same things as the programmer's official software).

I found that the original programming that came in my ATU-100 kit (the locked one from Malahit) actually did what I wanted with my 5W QRP rigs with no changes - I stopped trying to find a way to reprogram mine for now.

just a few thoughts....

M
AE0GL
Re: Programming the PIC16F1938 with a MiniPro TL866-II Plus

HB9FZL
 

Yes, I was hoping that would be possible. Unfortunately it seems there is only a DLL file that contains all chips information. I've had a peek into it by disassembling it, and the infoIC2Plus.dll indeed contains routines that returns the list of supported ICs, and for each IC another function that returns the data. So it's really not convenient to patch the DLL...
ATU-10 kit or built source? #ATU-10

Bryan Nehl
 

I'd like to obtain an ATU-10.? Preferably a kit option.
I'd appreciate a pointer to either a group by / kit option or?to a known good vendor of a built ATU-10.

72 de Bryan, k0emt
Re: ATU-1000 SWR Bridge adjustment question

Bj?rn Pasteuning - PD5DJ
 

Thanks, I figured this should be the way.

Will have a go today :-)
Re: ATU-10 #poll-notice

 

¿ªÔÆÌåÓý

Ok thanks Tony



Sent from my Samsung Galaxy S7 smartphone.


-------- Original message --------
From: "ZAO via groups.io" <zao@...>
Date: 15/6/22 8:13 pm (GMT+10:00)
Subject: Re: [ATU100] ATU-10 #poll-notice

Dear Glenn,

The longest keypress brings it into a power-down mode, the unit does not react on anything but the next longest keypress.
No RF-power will wake it up from there.
It is only the 30-minutes iddling time, when just the OLED is off, that the unit keeps monitoring the RF-power and may re-tune if necessary. Any keypress or RF-conditions change resets this 30-minutes timer anew.

Warm regards,
Tony

Re: ATU-1000 SWR Bridge adjustment question

 

Get a wattmeter and dummy load. Feed power thru the tuner in the FWD direction and set the pot to give you the same power the wattmeter says it is. Now switch the in and out of the tuner and do the same except this time you're adjusting the reflected power pot. All done.

Depending on the kit, you may find the two diodes aren't worth beans and you'll want to replace them with good ones.

Vince - K8ZW.

On 06/15/2022 07:48 AM, Bj?rn Pasteuning - PD5DJ wrote:
Hi all.

I Have purchased a ATU-1000 kit.
Does anyone know or have a good source where i can find instructions how
to adjust/calibrate the swr bridge with the 2 potentiometers?

73


Bj?rn de PD5DJ

Op wo 15 jun. 2022 12:13 schreef ZAO via groups.io <>
<zao@... <mailto:[email protected]>>:

Dear Glenn,

The longest keypress brings it into a power-down mode, the unit does
not react on anything but the next longest keypress.
No RF-power will wake it up from there.
It is only the 30-minutes iddling time, when just the OLED is off,
that the unit keeps monitoring the RF-power and may re-tune if
necessary. Any keypress or RF-conditions change resets this
30-minutes timer anew.

Warm regards,
Tony

--
Michigan VHF Corporation -- nobucks dot net

K8ZW -

Re: #ATU-10 not tuning on all bands #ATU-10

 

I went through all the bands to document it against my 80M EFHW prior to attempting to repair it.
1850 - 3.71:1
3550 - 1.22:1
5405 - 1.75:1
7050 - 1.93:1
10110 - 1.95:1
14.050 - 2.82:1
18080 - 1.25:1
21050 - 2.25:1
24910 - 2.02:1
28050 - 1.38:1
50090 - 4.70:1

My KX3 will get all of those bands to 1.3:1 or less. Yes, I know this isn't a KX3 tuner! I looked at the soldering using a loupe and some of the toriod soldering work looks suspect. The relays all look okay, but the leads are so short that most of them are merely solder blobs. I'll re-flow the enameled solder joints first in hopes of an easy win. This tuner is slated to go outside with a solar panel to charge it. Fingers crossed...
Re: #ATU-10 not tuning on all bands #ATU-10

 

I'm also having tune problems with my ATU-10. I found a few workmanship issues, the main ones being excess solder on several of the shunt capacitors and tiny balls of solder lodged between a few of the PIC pins.

I'm now at the point where I can use the test SW to manually tune a non-inductive 200 ohm resistor to nearly 1:1 on 40m, but no luck with using auto-tune. I have no problems auto-tuning this same resistor with my QRP-modified ATU-100. I also verified that the final network solutions were pretty much the same for each tuner.

I haven't had a chance to revisit the ATU-10, but I suspect that the PIC may be defective. Unfortunately, since this device doesn't appear to be available due to global supply chain issues, it's not a simple matter of replacing the part. It makes me wonder if the PIC in my tuner is either a factory reject or counterfeit.

Al, K2ZN

On Wed, Jun 15, 2022, 10:24 HA3HZ <gyula@...> wrote:
I experienced something similar during the construction of an SDR tcvr. Soldering small relays can be critical.
In the case of the BPF circuit, I found that one of the relays in the 40M band was not switched on at times. I determined and replaced it with an ohm measurement, it's been fine ever since.
I removed the plastic cover of the relay with a fine saw and found that a little deformation could already be an obstacle to good contact. As Glenn writes, you need to find the wrong piece with an Ohm gauge. I had another one, but it might be tensioning in one direction, making the contact not close well. If you have the opportunity to heat all the feet together (hot air) then you can eliminate the soldering stress. But be careful not to overheat, because the legs in the plastic will make the relay easy to trash.
I wish you a successful fix.
--
Gyula HA3HZ

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