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Re: Synchronized QRSS program for the original QRP Labs beacon
"Stephen"
Hi Yannick,
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This is very interesting. Does the Launchpad have to have the 32KHz clock crystal soldered in place? I am still waiting for my Stellaris boards to come from Ti, at the moment they are with the courier. 73s Steve G0XAR --- In QRPLabs@..., "Yannick" <yannick.devos@...> wrote:
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Synchronized QRSS program for the original QRP Labs beacon
"Yannick"
Hi,
This is some code the owner of the original beacon could be interested by : Programing a LaunchPad with this you can modify the beacon to transmit in 2 minutes interval (or more), allowing grabber multiple picture averaging. If you are not at ease with programing micro-controler, I offer a kit on my shop that can also give WSPR ability to the original G0UPL/G0XAR kit. 73, Yan. --- Yannick DEVOS - XV4Y |
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Re: Ultimate QRSS Kit
Gordon Kennedy
Agreed that this is a brilliant kit! We liked the kit so much we built 30 of them as a club project build-a-thon.
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Pictures in the photo section - Peel Amateur Radio Club Buildathon #19
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Service was excellant (despite the postal/customs) and hardly a hiccup?with the kits.
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Great stuff!
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73, Gord
From: "andyfoad@..." <andyfoad@...>
To: QRPLabs@... Sent: Wednesday, December 19, 2012 12:00:06 PM Subject: [QRPLabs] Re: Ultimate QRSS Kit ?
> I think the majority of your UQRSS builders do realise and > appreciate the amount of time and effort both you and Hans have > put into this kit, it can not have been easy for you both doing > all this work in your freetime. Yep, utterly brilliant little kit. When I popped my ATMEGA I was gutted. Those few days waiting for a replacement seemed to last forever ;-) I like mine so much that I boxed it up and added some extra hardware which can now be seen as photo's in the groups files section. > I hope you and Hans and your families have a happy and peaceful > Christmas and a happy New Year, and the same to you and yours Andy Yep, seasons greetings all around, and to all the other experimenters and builders on here. Getting this kit has been a nice way to end this year in radio. 73 de Andy |
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Re: Ultimate QRSS Kit
"andyfoad@..."
I think the majority of your UQRSS builders do realise andYep, utterly brilliant little kit. When I popped my ATMEGA I was gutted. Those few days waiting for a replacement seemed to last forever ;-) I like mine so much that I boxed it up and added some extra hardware which can now be seen as photo's in the groups files section. I hope you and Hans and your families have a happy and peacefulYep, seasons greetings all around, and to all the other experimenters and builders on here. Getting this kit has been a nice way to end this year in radio. 73 de Andy |
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Re: Ultimate QRSS Kit on 28Mhz.
"dd5cf_colin"
Hi Steve and Andy,
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I think the majority of your UQRSS builders do realise and appreciate the amount of time and effort both you and Hans have put into this kit, it can not have been easy for you both doing all this work in your freetime. I look forward to seeing your next idea. I hope you and Hans and your families have a happy and peaceful Christmas and a happy New Year, and the same to you and yours Andy Vy 73 Colin DD5CF / G1ZOS --- In QRPLabs@..., "Stephen" <squirrox@...> wrote:
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Re: Ultimate QRSS Kit on 28Mhz.
"Stephen"
Andy,
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It fixes a rare bug in the "Reset to Factory Settings" feature. Unless you have experienced them you won't see a difference. I don't think people realise the blood, sweat and tears that Hans put in to the firmware to get all those functions into such a tiny amount of processor + memory. I used to program for a living and there is no way I could have done it. Glad that you are having some spots. 73s Steve --- In QRPLabs@..., "andyfoad@..." wrote:
Hi Steve, ATMEGAS received with thanks ! Up and running in minutes and getting spots on WSPR. Just curious about the version 1.08, can't see what the difference is yet from 1.07. Kind regards, Andy G0FTD GQRP 13690 |
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Re: Corrupt IC, help required.
"andyfoad@..."
I had to switch off because I was testing a small ATU that I had
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built into the box. ATU works a treat. One call, two small polyvaricons and I can tune any old bit of wire to the beacon. To be fair I must say that the IC seems pretty robust. I've done countless powers ups and downs whilst testing and learning with no problems so far. I have a suspicion that I may have switched off and on again too quickly and not given it time to properly power down before powering it back up which caused the problem. Oh well, I'll wait for the new spares to arrive in the next few days and remember it for next time, fingers crossed ;-) I'm kinda missing my beacon now and had to resort back to a PC based solution with FT817 for now. I hate tying up lots of good equipment just for one task :-( 73 de Andy --- In QRPLabs@..., Tony Volpe <tony.volpe.1951@...> wrote:
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Re: Corrupt IC, help required.
"Chris D"
Ran into a similar issue with a corrupted EEPROM. Was initially working fine then on a later power up, I got jibberish/odd characters and extra characters where they shouldn't have been.
Did factory reset several times but it didn't revert to the original input sets. Tried to scroll through and set the parameters but each time I set one parameter, the setting would carry to the next parameter screen and I ended up not being able to individually enter each parameter. Waiting for a replacement chip with new firmware. If this is a common issue, I may order an extra chip or two to have on hand. 72, Chris KQ2RP |
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Re: Corrupt IC, help required.
"Mark"
Hi all,
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I ran exactly into the same problem after building my 3rd kit. Gave up and installed a older v1.5 chip for time being. 73`s Mark --- In QRPLabs@..., "andyfoad@..." <andyfoad@...> wrote:
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Corrupt IC, help required.
"andyfoad@..."
Did a switch on earlier and U-QRRS tx went a little mad and decided
to get it's knickers in a twist. Did a factory reset and encountered a problem. Cannot properly enter the frequency. I can enter (IIRC) about 9 or 10 numerals but cannot obtain a decimal point anymore. Tried several more factory reset options. Am I missing a trick, or do I just replace the ATMEGA IC and start again ? 73 de Andy G0FTD |
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Possible cheap source of 1pps
"Mike W"
While looking for a discrete 60khz receiver circuit I came across this
article.... It shows how to get a 1pps signal from a WWV analog clock movement. In the article it is a specific movement, but I'm sure that there many ME2 copies of the clock used in the example. Hope this is of interest to someone.. all the best, Mike |
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Re: Ultimate QRSS Kit on 28Mhz.
"Stephen"
If you are really brave you could simply try overclocking the AVR at 28 MHz. I am told by one correspondent that this works. You will have to change the LPF to :-
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10 turns, 11 turns and 10 turns on the T37-6 toroids 56 pf x 2 and 150 pf x 2 for the caps 73s Steve --- In QRPLabs@..., "Yannick" <yannick.devos@...> wrote:
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Re: Ultimate QRSS Kit on 28Mhz.
"Yannick"
Hi,
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Another possibility would be to use a DDS for signal generation. This gives a true flexibility but you will still have to adapt the PA to the right frequency. I am working an such a project with an open source code. However I had to reject a first sample of DDS board from Hong Kong that were not compliant to the specifications (a few passive parts does not really matter, doesn't it ?). The PA stage will need more work however, but for those who already own a UQRSS kit, there is always a good one to use. 73, Yan. --- Yannick DEVOS - XV4Y --- In QRPLabs@..., "Facility 406 DM09" <facility_406@...> wrote:
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Re: Ultimate QRSS Kit on 28Mhz.
"Facility 406 DM09"
"Of course I presume that some messing about with the FSK shifts would
be needed to ensure the WSPR signal is of the correct "deviation" ?" Seems to me you modulate the carrier after the doubler, this prevents deviation problems and rubbering the primary oscillator could put the modulation where you need it, just vary it half as much for the spread at the doubled frequency. Kurt |
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Re: Ultimate QRSS Kit on 28Mhz.
"w5cov"
Here is a link to some multipliers that I have used to 30 MHz.
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The circuits are shown under the RF CIRCUITS header on the "circuits" page . Charlie , W5COV --- In QRPLabs@..., "andyfoad@..." <andyfoad@...> wrote:
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Re: Ultimate QRSS Kit on 28Mhz.
"andyfoad@..."
Good idea.
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I was thinking about doubler circuits too. I know that the GQRP club sells cheap 14.060 xtal, which could be bent to 14.0624, and when doubled would put you on the 10m WSPR frequency. G3XBM does similar here:- Of course I presume that some messing about with the FSK shifts would be needed to ensure the WSPR signal is of the correct "deviation" ? Another alternative might be to steal a few milliwatts from the on board oscillator, mix it to 28.125 for the WSPR freq with a bit of suitable amplification and then one would have a dual band WSPR beacon. (Same could be done for the QRSS freq depending upon operators interest). This method would give two bands and negate the need for messing about with the FSK settings. Food for thought. I shall be boxing up my kit this week, so lets get that out the way first ;-) 73 de Andy --- In QRPLabs@..., Tom Clifton <kc0vsj@...> wrote:
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