PA voltage recommendations ?
Greetings all !
I've just placed my order for the latest Ultimate QRSS kit, mainly to
use on WSPR but I'm sure I'll play with the other modes eventually.
My plan is to use two of the 2N7000's at a
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"andyfoad@..." <andyfoad@...>
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#693
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Chip problems
hi guys,
I have noticeded a couple of you are still having problems. I will ship
replacements which i will test on my own beacon first to verify that they
work when they leave me. This wont happen
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Stephen Farthing <squirrox@...>
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#692
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This is getting to be spooky, someone somewhere does not want me on 160m
Hi to all members, I have received the ATmega V1,6 (thanks Steve) and have inserted it the correct way round but there is nothing on the display (totally blank) when I insert the old chip the display
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"woodiescbj" <jobaco@...>
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#691
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WSPR beacon with the "old" QRSS kit
Hi,
I have finished modifying my 30 meters QRSS kit into a WSPR autonomous beacon using a TI Launchpad with MSP430G2553 (4,6 USD micro-controler kit).
Here some pictures and more details (in french
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"Yannick" <yannick.devos@...>
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#690
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Re: Ultimate QRSS: problem with set-up menu
Hi Hans,Steve,
Today the new processor arrived, I installed it and everything works well. Setting up is a breeze now.
Still don't know how the eeprom got corrupted.
Now on to the GPS module, I m
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"Paul" <pe1oku@...>
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#689
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Re: My PA keeps blowing UQRSS Kit << Help >>
I hope you've had some success but a sideways look at this might suggest you could have replaced the first failed PAs with 2N7000 and installed them as BS170. You do say that this happens
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"lowemmission" <lowemmission@...>
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#688
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Re: My PA keeps blowing UQRSS Kit << Help >>
Have you measured the output voltage of the 7809? The fact that the problem
doesn't happen when the higher voltage is applied to the PA suggests to me
that there may be an issue around the regulation
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Tony Volpe <tony.volpe.1951@...>
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#687
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Re: My PA keeps blowing UQRSS Kit << Help >>
What load are you using for the PA output?
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Stephen Farthing <squirrox@...>
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#686
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Re: My PA keeps blowing UQRSS Kit << Help >>
Tony,
Sorry to hear your bad luck.
As has already been said, if you are using BS170s as a replacement for the
2n7000 they fit the opposite way around. But I am sure you won't have made
that
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Stephen Farthing <squirrox@...>
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#685
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Re: My PA keeps blowing UQRSS Kit << Help >>
The two BS170's are installed correctly (180 degrees compared to the original 2n7000). I have had them in the kit for over a month and it's been working more or less 24hrs a day since with no issues
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"G1IVG" <colinlowe_home@...>
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#684
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Re: My PA keeps blowing UQRSS Kit << Help >>
You say you replaced both transistors in the kit; as only one is supplied originally you have replaced them as 2N7000? or not by chance with BS170? .Their configuration does not follow the PCB
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"lowemmission" <lowemmission@...>
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#683
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My PA keeps blowing UQRSS Kit << Help >>
Hi all,
I built my 30m Ultimate QRSS kit over a month ago and it's been working fine until last night. When I unplugged the kit and plugged it back in again after about 15 seconds I heard a pop and
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"G1IVG" <colinlowe_home@...>
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#682
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Re: I am having trouble with the UQRSS Kit for 160m, any advice would be appreciated
Will do Philip, Thanks for the idea, I will start the DVM/Circuit diagramme tests tomorrow.
73 Colin
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"woodiescbj" <jobaco@...>
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#681
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Re: I am having trouble with the UQRSS Kit for 160m, any advice would be appreciated
Colin
Any chance of posting (in photo album on here) a decent quality photo
of top and bottom of your board so a few more fresh eyes can have a look for you assuming you don't spot the
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"p19547ct" <pcteee@...>
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#680
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Re: I am having trouble with the UQRSS Kit for 160m, any advice would be appreciated
Thanks for your post Steve, yes I know you are Steve I am not having a Senior Moment (I hope not or am I) ;o) I was replying to that Serling Chap Philip G4JVF, who told me he also hat problems with
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"woodiescbj" <jobaco@...>
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#679
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Re: I am having trouble with the UQRSS Kit for 160m, any advice would be appreciated
Colin,
I probably did not make myself clear in the previous post.
If the seconds are going up by 1 every 8 seconds then you have a faulty
chip which I will replace FOC. You can tell this by setting
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Stephen Farthing <squirrox@...>
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#678
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Re: I am having trouble with the UQRSS Kit for 160m, any advice would be appreciated
Hi Philip and all other members,
I have not found any solder splashes or other mistakes on either side of the PBC, this is something I will now have to check with the circuit diagramme and multimeter
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"woodiescbj" <jobaco@...>
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#677
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Re: Ultimate QRSS: problem with set-up menu
Hi Hans,
Okay, I will do that, thanks for the quick response.
Paul PE1OKU
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"Paul" <pe1oku@...>
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#676
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Re: Ultimate QRSS: problem with set-up menu
Hi Paul
What you describe sounds typical of what happens if the EEPROM gets
corrupted. Please can you order the v1.06 free upgrade from Steve at the
shop?
73 Hans G0UPL
message at
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Hans Summers <hans.summers@...>
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#675
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Re: Ultimate QRSS: problem with set-up menu
Ups..that was wrong. I am still using 1.04
Sorry
LA5VNA Steinar
loc:jo59jq
www.opera.no
Den 25.09.2012 23:37, skrev Steinar Aanesland:
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Steinar Aanesland <saanes@...>
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#674
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