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Re: raduino v1.27 released (improved suppression of spurious burst)
On Sun, Nov 5, 2017 at 06:57 pm, Dexter N Muir wrote:
Would that be a different series/'branch' of code?Yes it would. One of?my most important design criteria for the Raduino code is that it shall always work, even on a standard unmodified BitX40 (which uses?Ashhar Farhan's?tuning concept based on a potentiometer). Theoretically we could?create code supporting both concepts (tuning pot as well as encoder), allowing the user to choose. However, given the limited program space in the Arduino Nano, this?seems practically impossible. 73 Allard PE1NWL |
Re: Modular BiTX40
Dimitar Pavlov
Hi, I think, You need to solder and test pcb's for transceivers, before publish them.
73!LZ1DPN
On Saturday, November 4, 2017, 2:34:42 AM GMT+2, Juan Carlos Berberena Glez <cubanqrp@...> wrote:
It is my idea to conforming a modular rig. My design requirement: Main board have to be < 100 x 100 mm to use a PCb manufacturer discount as a prototype. All the module have to be the same size interchangeable over the main board for experimenter or for teaching uses. The main board would be assembly as a regular rig or will be assembly separate with each module. The relay and the Qrp PA will be in other module with the option to snap in to the main board. At this time the main board is empty, but It will be completed with all the modules for the regular use as a Qrp exciter. Please any comment will be appreciate to improve the design idea. Qrv's, 73's Mr.Juan Carlos Berberena Glez BSc. WJ6C ex/CO6BG ¡°If you have a penny and I have a penny and we exchange pennies, you still have one cent and I still have one cent.? But if you have an idea and I have an idea and we exchange ideas, you now have two ideas and I now have two ideas.¡±? |
Re: RX and TX LED
just for indication. ?at 12V you better use 4K7regards Sarma ? On Mon, Nov 6, 2017 at 1:42 PM, Michael Hagen <motdog@...> wrote:
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Re: RX and TX LED
¿ªÔÆÌåÓýUsing 680 ohms will really make the LED bright.? I = (12V - 3.3V ) / 680.? Most work real nice on just a few ma.? 2.2K should give nearly 5 ma.? What folks are saying is an LED is not "operated" or "biased" with voltage.? You put a current thru them, and the voltage is just a result.? You get what you get! The current limit
resistor is picked for how bight you desire it to be.?? The
3.3V spec will be the approximate voltage drop at a given
current. If you were running on
a battery, you might try only 1 or 2 ma. Just a thought, most
take 20 ma. OK.? For an experiment, try 10K and then 1K?? Mike, WA6ISP
On 11/5/2017 9:52 PM, Prathap Naidu
wrote:
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
Re: RX and TX LED
Complete basic electrics, Ben. An LED is a *current-driven* device. You can use *any* Voltage to feed it, so long as you limit the *Current*. You do this with a resistor. Here you use basic arithmetic and Ohm's law. Calculate the required resistance:? = Voltage / Current. Voltage is that supplied minus the LED's natural 'forward' (conducting / 'lit') voltage (typically that's around 1.3 Volts). So, given 12V supply and current around 10 milliAmps (a good starting point, most will give light at 2 or 3 mA and start burning out around 50mA - High-insensity types vary of course - look up the data sheets), then R = (12-1.3 / .010) which ends up around 1 or 1.2k (1000 or 1200) ohms. If only one is to be lit at a time, (RX or TX) they can share the resistor (the 'bi-color' type, or two devices). If they are to be individually lit and can be both lit, (PWR and TX) then each needs its own resistor. 73... |
Re: RX and TX LED
So I can tap the wires from K1 and then use a voltage divider circuit to drop it to 3.3volts right? Ben Kd2nou? On Mon, Nov 6, 2017 at 12:52 AM Prathap Naidu <vu2pop@...> wrote:
-- Ben KD2NOU |
Re: RX and TX LED
Prathap Naidu
¿ªÔÆÌåÓýYou can use a dual color LED with 3 leads, centre is common gnd. I have used a standard 3mm LED , you can also use 5 mm if you need, but the 3 mm is quite Ok The 680 ohms is the dropping and current limit resistor, I have tapped the 2 wires from the K1 relay which alternates the +12V between Rx and Tx 73 Pop VU2POP ? From: [email protected] [mailto:[email protected]] On Behalf Of Ben Piecora ? Thank you VU2POP. Is the yellow wire for RX and the green wire for TX and then the 680 ohm resistor goes to ground? Is the LED 12 volts? I was planning on using a Red 3.3 volt LED to indicate TX and a green 3.3 volt LED to indicate RX ? 73 Ben Kd2nou? ? On Mon, Nov 6, 2017 at 12:37 AM Prathap Naidu <vu2pop@...> wrote:
-- Ben KD2NOU |
Re: RX and TX LED
Thank you VU2POP. Is the yellow wire for RX and the green wire for TX and then the 680 ohm resistor goes to ground? Is the LED 12 volts? I was planning on using a Red 3.3 volt LED to indicate TX and a green 3.3 volt LED to indicate RX 73 Ben Kd2nou? On Mon, Nov 6, 2017 at 12:37 AM Prathap Naidu <vu2pop@...> wrote:
-- Ben KD2NOU |
Re: RX and TX LED
Prathap Naidu
¿ªÔÆÌåÓýHi ben See attached pics, solder 2 wires below the K1 relay as shown, then to the Dual color LED , the centre of the LED goes to ground thru a 680 Ohms restistor. Have fun happy Bitxing 73 Pop VU2POP ? From: [email protected] [mailto:[email protected]] On Behalf Of Ben Piecora ? Hi Everyone, ? Could anybody tell me a way I can pull voltage from the board for an LED on RX and then pull voltage from the board for a TX LED and turn off the RX LED? ? Thanks Ben KD2NOU -- Ben KD2NOU |
Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
Vince Vielhaber
I tuned in late, but there was too much noise. I was using the FT-101 and the noise floor was about an S7 or S8.
toggle quoted message
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Vince. On 11/05/2017 10:54 PM, KN4AAG Kevin Estep wrote:
Only made one contact. NX2U, Michael, in TN. --
Michigan VHF Corp. |
Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
¿ªÔÆÌåÓýTom, of all nights, tonight is the first night I got your call sign, when W1LY and you signed off. ?Shouted out to you with a 100 watts and a wire, but nothing getting out from here. Craig KM4YEC
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Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
Ok Dex...I hear you but you're never too old to try something new, eh?
It's now 0313 Z and managed to work VE3RRD AL about 3 miles, VE6RAC about 1,600 miles and W1LY Wily about 787 miles. Heard WI1B but did not confirm qso. Can't say I heard anybody else in 3 hrs. The band is a changin for sure. 73 all |
Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
¿ªÔÆÌåÓýW1LY,? Your 600 watts like you are sitting next to me. at 10:07 and earlier about 15 minutes ago. ?I dialed up 90 watts and you didn¡¯t answer. Craig KM4YEC in east TN
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Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
¿ªÔÆÌåÓýI heard W1LY calling CQ on both BitX40 and IC718, but no one hearing me tonight. I can hear W1LY and hear other side a few times with out getting call sign. Time to raise the antenna. Craig? KM4YEC
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Re: raduino v1.27 released (improved suppression of spurious burst)
I'd second that for the full Raduino - with A7 (and A6) free/d, it ought to be possible with a bit of assignment juggle ... :) especially not needing/wanting CW or 'touch keyer.' Would that be a different series/'branch' of code? 73 de ZL2DEX |
Re: RX and TX LED
I put a resistor and a 12v LED into the TX line to my 30mm x 30mm fan which blows directly on the final heatsink. I wanted to drop the voltage to the LED and now I can see when I am in TX and that the fan is running. 73 Willy On Sun, Nov 5, 2017 at 6:35 PM, Michael Hagen <motdog@...> wrote:
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Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
radiomanjwt: we're 3 hours ahead of you (daylight saving adds 1), so that's 8-9pm here. Let's see, eh? This BITX is my first foray into HF, so even this 67-year-old is a "tenderfoot", and I have nothing more powerful.
73... |
Re: BITX QSO Night, Sunday, November 5, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
¿ªÔÆÌåÓýI worked Mike VE6RAC on 7178 too. I called and called on 7277 nothing heard. Nobody heardon the usual frequencies. My dx was Russ KG0BK and Gordy AA5TN both about 3 miles away. Ed W0OIC On 11/5/2017 8:25 PM, Brent Seres
wrote:
Listened on 7277 tonight but didn't hear anyone...got clobbered by the BC station? on 7275. |