DHL just delivered?Dec 17 order date
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Re: Audio in speakers during Tx
Even my Novice 75W transmitter would light the hall light at night each time I keyed the rig. Reversing the switches at each end of the hall made it non resonate on 40M. ?
Probably saved some RF to be radiated too. ?LOL
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On Feb 7, 2018, at 9:15 AM, Michael Hagen < motdog@...> wrote:
Yes, it depends on
input Z of the amps.? I remember tube amps.?? I built a big
stereo in the 60's, they had Hi Z so low values worked.? I
have a great story....... My neighbors had a water heater
system with a big water holding solar panel on the roof.? When
I fired up the SB200 or 220, it cycled their water pump.? They
figured it out!?? They heard me Yelling on the Mic during a DX
Contest!? They put 2 and 2 together.
I had to go on the
roof and put .1uF? on all their control switches and wiring!??
It was a perfect 20 Ant. up there.
73's
Mike
?
On 2/7/2018 8:44 AM, Mvs Sarma wrote:
Mice,
?I had these experiences that old? Inveterted audio
electronic telephones instruments called secraphones
installed for VIPs? close to Radio Transmitters? used
to misbehave.
?We immediately used to have a capacitor across the Mic
module and telephone line Inop=put close to active
components to byepass RF.
?You are right that even 1000pF would do.
?But afterall the audio at Volumen control point is coupled
with 1 to 5uF capacitors.
?hence i thought even 0.1uF would not deteriorate audio.? The
induction could be internal to amplispeaker also and thro
power mine that powers the ampli speakers.
?Thu8s? I suppose that byepaasing audio at volume cotroll
stage is better.
?regards
?sarma
?vu3zmv
??
--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
Thanks for interresting.
I found a bug in version 1.0 and fixed it. Changed version to 1.01.
Click the link below to download the bug details and 1.01.
Ian KD8CEC
It’s at the very bottom of the page - latest v1.0 now?
On Feb 6, 2018, at 6:43 AM, Je < emilus@...> wrote:
?Hi, all!
A link from where to download version 0.35, please! I found only 0.33!
Regards, Emil
-- Best 73 KD8CEC / Ph.D ian lee kd8cec@...
(my blog)
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Re: Are you looking for a case for your Bitx?
You're searching wrong. Do a search sorted by lowest price + shipping first. I'm watching a box with built in power and 15 BNC connectors, is 8.7x9.4x1.7H and is less that $20 after you add in shipping. There are others in the similar price range.
Vince.
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On 02/08/2018 02:46 AM, Lawrence Galea wrote: Did you look at the shipping charges?
Some of them don't even have shipping charges stated.
Regards
Lawrence
On Thu, Feb 8, 2018 at 8:41 AM, Dr Fred Hambrecht <w4jle@...
<mailto:w4jle@...>> wrote:
extRon, I left out the R when I typed it.But at least you have found
a source of shoes :>)
v/r
Fred W4JLE
-----Original Message-----
From: [email protected] <mailto:[email protected]>
[mailto:[email protected] <mailto:[email protected]>] On Behalf Of
Vince Vielhaber
Sent: Thursday, February 8, 2018 00:55
To: [email protected] <mailto:[email protected]>
Subject: Re: [BITX20] Are you looking for a case for your Bitx?
All I got with a search for "EXTON" was shoes, some $2500 water
purification systems and strapping. Care to be more specific? Note:
the shoes didn't have a display in them :)
Vince.
On 02/07/2018 09:26 PM, Dr Fred Hambrecht wrote:
> Looking at stuff on EBay there is a ton of EXTON equipment for sale. I
> bring it up because the equipment is cheaper than cases and many
> already have 16X2 or 20X4 displays already installed. Lots of
> connectors as well. A search of "EXTON" will give you a ton of ideas.
>
> v/r
> Fred W4JLE
>
--
Michigan VHF Corp.
--
Michigan VHF Corp.
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Re: Are you looking for a case for your Bitx?
Yeah, I saw Mike's post and checked that. And it does provide a good source of shoes!
Anyone looking at these for cases, I recommend you go to their website so you can get the dimensions on the enclosure. Those distribution amps look like the perfect size (according to the ebay pic), only to find out it's only a 1.7x4x3 box! There are some that are a good size tho and the price is what you'd be paying for just a box. Some of the boxes only have a hole in the front for an LED so you have a nice front panel to work with. A couple I'd seen even came with a 12V 3A power supply!!! BONUS!
Vince.
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On 02/08/2018 02:41 AM, Dr Fred Hambrecht wrote: extRon, I left out the R when I typed it.But at least you have found a source of shoes :>)
v/r
Fred W4JLE
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Vince Vielhaber
Sent: Thursday, February 8, 2018 00:55
To: [email protected]
Subject: Re: [BITX20] Are you looking for a case for your Bitx?
All I got with a search for "EXTON" was shoes, some $2500 water purification systems and strapping. Care to be more specific? Note:
the shoes didn't have a display in them :)
Vince.
On 02/07/2018 09:26 PM, Dr Fred Hambrecht wrote:
Looking at stuff on EBay there is a ton of EXTON equipment for sale. I
bring it up because the equipment is cheaper than cases and many
already have 16X2 or 20X4 displays already installed. Lots of
connectors as well. A search of "EXTON" will give you a ton of ideas.
v/r
Fred W4JLE
--
Michigan VHF Corp.
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
It’s at the very bottom of the page - latest v1.0 now?
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On Feb 6, 2018, at 6:43 AM, Je < emilus@...> wrote:
?Hi, all!
A link from where to download version 0.35, please! I found only 0.33!
Regards, Emil
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Re: Raduino Regulator Thermal Management
Oh, wow!? Now that you mention, I forgot that I had an extra lying around and so I stuck it on there!
Never mind then.
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Re: Raduino Regulator Thermal Management
The B40 did not have a heatsink, either.? It had to be added, by the owner.
Marco - KG5PRT?
On Feb 8, 2018 8:53 AM, "Arvo KD9HLC via Groups.Io" <arvopl= [email protected]> wrote: So why did the B40 have a big heat sink on the regulator, but the ?B has none?
(Apologies if I missed a previous explanation.)
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Re: Are you looking for a case for your Bitx?
Carl: I am on your list for the last week in Feb.
Sent from my Verizon, Samsung Galaxy smartphone
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-------- Original message -------- From: Carl Beck <carl@...> Date: 2/8/18 09:31 (GMT-05:00) Subject: Re: [BITX20] Are you looking for a case for your Bitx?
I have designed a case specifically for the uBITX.? You may like it.? See attachment.
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Raduino Regulator Thermal Management
So why did the B40 have a big heat sink on the regulator, but the ?B has none?
(Apologies if I missed a previous explanation.)
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Re: Are you looking for a case for your Bitx?
I have designed a case specifically for the uBITX.? You may like it.? See attachment.
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Could be easily enough implemented... assuming you had 2 analogue inputs on the arduino.
A modification to the doTuning() function in ubitx_20.ino to handle the input of the X and Y and modify the tuning rate accordingly. This could be done is parallel with the existing encoder handling, since it is unlikely that both methods would be used simultaneously... and even if they were, you could throw away the encoder input if there was a non-zero value on jpyX or joyY.
/ Gerry
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Re: CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
Clark wrote :?
>If you can wire the LCD backlight to be turned on by a transistor controlled by the CPU then on power fail detection you can turn it off to conserve power.
And there is an added bonus of doing this. It means that you can easily implement a power saving option to turn off the backlight during normal operation.
If the option is selected and the encoder isn't touched for some nominal time period (30 seconds to 1 minute) then the display backlight turns off.?
Then when the encoder switch is depressed or the shaft turned the backlight switches back on. This could be a useful power saving feature for portable operation when operating from battery.?
Cheers
Michael VE3WMB
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Re: W0EB/W2CTX Latest uBITX software release
#ubitx
Apparently the problem was due to a bad Nano on the user's Raduino - unable to duplicate the problem on at least 5 Raduino's now so it appears the bug report was one isolated case.
Jim - W0EB
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Re: CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
I'll bet that would work!
Jack, W8TEE
From: Ian Lee <kd8cec@...>
To: [email protected]
Sent: Wednesday, February 7, 2018 11:23 PM
Subject: Re: [BITX20] CAT Support uBITX Firmware CEC Version 1.0 Release #ubitx
Jack. I think it is probably due to the big current consuming parts like LCD.
i have heard that a long time ago (20 years ago?) I used to use this method in a low power device.?
I will try to use a super capacitor and a diode later, and I have not tried it until now.
Ian -- Best 73 KD8CEC / Ph.D ian lee kd8cec@...
(my blog)
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Re: Are you looking for a case for your Bitx?
The likelihood is that since many are shipping from the UK, DX shipping would be so expensive that they don't bother listing it.
/ Gerry
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Thanks a lot for the info. I got the schematic from a link through this site. I do agree about the filter. Anyway I will give it a try and see how it works. R70 on my board is has a 100 value.
73 de Konstantinos, SV1ONW
On Feb 8, 2018 04:51, "Tim Gorman" < tgorman2@...> wrote: Where did you get the "production" schematic for the ubitx? The web site schematic is different. It shows no C78.?
Both the old schematic and the one of the web site shows R253 as being a 1K resistor.?
The 1K resistor and .1uf capacitor would for a low-pass filter with a 3db frequency of about 1500hz. I'm not sure why that is there but I can only assume it is needed to tame the audio circuit.
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uBITX Manager has been successfully run on linux (Rasbperry pi).
#ubitx
I have installed Mono and modified some of the programs to fit the Linux environment. I ran it on Linux (Raspberry pi) and it worked correctly. My Linux machine is Raspberry pi, so I run it here but it will be running elsewhere.
See the link below for instructions.
I took a step-by-step capture screen.
Please click the link below for test videos.
The test was made only in the menu that can be set only in uBITX Manager. Note that autokey works properly only when the key type is in IA or IB. -- Best 73 KD8CEC / Ph.D ian lee kd8cec@...
(my blog)
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Re: CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
A similar approach is done in the BitX40 sketch.
Also it is important to note that when you use the EEPROM.put command,
memory cells are only actually updated when the new data is different from
the current cell's content. That also reduces the number of writes.
73 Allard PE1NWL
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On Thu, February 8, 2018 03:56, Jack Purdum via Groups.Io wrote: I had a situation where I wanted to insure that, when the user restarted
their transceiver, it would show the last-used frequency. The problem is
you don't know when they are going to turn the rig off. Sure, there are
ways to do things after power is removed, but this was a QRP rig where
cost was a primary concern. What I did was use one of the Nano's timers to
try to determine what the user was doing. If the frequency is changing in
short intervals, say once every second, chances are they are tuning around
on the band. If they have not changed frequency in the past XX seconds, I
updated the EEPROM with that frequency, provided that the EEPROM frequency
is different from the current operating frequency. That way, if the user
is monitoring a net frequency for an hour or is away doing something but
the rig is still on, no EEPROM updates are done. EEPROM reads have no life
cycle, so if they are just tuning around or if they are "parked" on a
frequency, this approach can extend the lifetime of the EEPROM.
Jack, W8TEE
From: Ian Lee <kd8cec@...>
To: [email protected]
Sent: Wednesday, February 7, 2018 9:08 PM
Subject: Re: [BITX20] CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
Thanks for very important information.
The lifetime of the eeprom guaranteed by the vendor is 100,000 write
cycle. read cycle is unlimited.
One thing to note is 100,000 times per memory address.
It is not important how many eeprom addresses are used, but how much is
written to one eeprom address is important.
There is no problem with using a typical eeprom. 100,000 times more than
thought is very large.
Some people say that they have used more than 100,000 through the
experiment, but it is better to use the range that the vendor guarantees.
Experience has shown that the eeprom lifetime error is one case.
It is a periodic write to one memory address.
The most vulnerable is to use eeprom in loops like for and while, or to
use the eeprom periodically in the timer.
In case of uBITX, cyclic frequency(with mode) storage to eeprom will be a
problem to automatically display the frequency that was used previously
when the radio is turned on and off.
If you save every 5 seconds, 720 writes occur in 1 hour.??The life of the
eeprom guaranteed by the vendor is only 138 hours.??If use it for 2 hours
every day, the life time of 70 days is over.
Of course, the actual life of the eeprom is much longer than the number of
times it is guaranteed by the business. Because we are not always lucky, i
will not discuss it here.
So, I am actively agreeing with ron's important information.
I have put some of safeguards in my firmware to take into account the life
of the eeprom.
The first is virtual eeprom.??I created the same variable as eeprom that I
had to write periodically and put it in memory.
Compared to the contents of memory before writing to eeprom, I made it
write if it changed.
This avoids unnecessarily wasting the write cycle on a periodic basis and
preventing the CPU usable
Another was to identify the intent of the user.??In other words, if the
frequency is changing rapidly, the user is turning the knob.
That is, if the frequency is changing, it will skip even if the periodic
storage time is reached.
Always be careful when using eeprom in loop statements or timers.
Ian KD8CEC
2018-02-08 8:49 GMT+09:00 Ronald Pfeiffer via Groups.Io
<w2ctx@...>:
I would be careful since EEPROM has a finite write life!These nano's are
soldered in.
rOn
From: Mike Woods <mhwoods@...>
To: [email protected]
Sent: Wednesday, February 7, 2018 6:27 PM
Subject: Re: [BITX20] CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
There are 20 memory channels in the latest versions (0.35 and 1.0) and
they are stored in EEPROM.
Mike
On Thu, 8 Feb 2018 at 11:14 AM, John P <j.m.price@...> wrote:
Not familiar with your code, but maybe keep the memories in EEPROM.??
--
John - WA2FZW
--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com??(my blog)
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Re: CAT Support uBITX Firmware CEC Version 1.0 Release
#ubitx
?OK I'll take a look at both yours and the hamlib codebase, maybe I
can put together a specific ubitx backend for hamlib that supports
the non ft817 memory commands. It would be nice to have a proper
hamlib backend anyway so that it doesn't report ft817 functionality
that isn't emulated.
-Cheers Max, G7UOZ.
On 08/02/18 00:51, Ian Lee wrote:
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Max
I have not used rigctl in command mode.?
I'll
try the rigctl command if I have a chance.?
In FT-817 compliant CAT control, eeprom read / write is
rarely used.?
VFOA / VFOB conversion, get / set cw speed, get / set side
tone, and get split status.?
I have run several programs and checking which using
protocol with the logic analyzer.
and uBITX emulated only necessary protocols.?So things that
are not needed in uBITX like FT-817's output adjustment,
antenna connector position, etc. will not be controlled.
Instead I created a new protocol for just uBITX eeprom
control.
I made it so simple that it can be applied to all firmware
within 20 lines of code.
uBITX Manager uses this protocol.?
uBITX Manager does not use FT-817 protocol but uses uBITX
proprietary protocol, so it can not be controlled by general
purpose program.
I am happy to get a lot of information while starting
amateur radio again.
Ian KD8CEC
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Arvo W0VRA
Leland Lannoye
Carl Beck
Jim Sheldon
Allard PE1NWL