Does anyone have a copy of the PCI Soundcard Interface article that was published in Amateur Radio, April 2004 starting on Page 24. I have a copy of Page 24,...
As the business war on the air is hotting up with so many low-budget airlines dominating the sky, the passengers can now enjoy the best deals. The webguide -...
Hi Alan, I haven't yet been able to find a moulded choke approaching 470uH. I'll keep looking. Value is probably not too critical. Perhaps a ferrite bead here...
Steve, It sounds like just an RF choke to stop the RF seeing the bias network and being shunted. You can probably use a moulded choke of around that value, or...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the ARNSWHomebrewgroup group. File : /How...
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Sep 14, 2008 12:31 am
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Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the ARNSWHomebrewgroup group. File :...
ARNSWHomebrewgroup@...
Sep 13, 2008 10:49 pm
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Hi All, Anyone know where I can get a copy of Drew Diamond's VK3XU - Radio Projects for the Amateur Vol 2? Following a suggestion from Owen regarding a...
Hi there All, The newbie with more questions for the collective mind... Still working on parts for a VCO. Again with thanks to Owen & Alan for their replies to...
Ladies and Gents, I picked up a flyer for this PS at the BMARC Winterfest, however it is a written description of how the project is achieved. Would anyone...
Steve, Here are my comments, inserted into your original email: ... Running the VFO on the low side will result in an increasing VFO frequency corresponding to...
... I'd probably go the other way with high-side injection. An IF around 2 MHz and an LO of 5.5 - 6 MHz. That might be a little weird (and inverts the...
Hello Owen and Peter, ... Yes, a bit of a worry when there was only one message in July offering a mail order "Uni Degree" ;-) Anyway, to return to the subject...
The fast paced advancements in education and technology require us to keep up to date in the chosen field. We also need to improve our skill sets or study a...
Hi Nick - I built one, some years ago now, from a "Silicon Chip" article - it was a charger for a portable guitar amp project they had (The Busker, I think it...
Tony, If you're coming to the next Macca's I can bring some. Otherwise, the eBay seller dpi4parts is where I got mine. Regards, Alan VK2ZAY ... equivalent....
Ok, I've swapped out the MRF261 and put in an MJE3055, basically just another NPN in a TO-220 case. I had to bend the pins around as it's BCE instead of BEC. ...
No voltage on the emitter is a bad sign, with that small emitter resistance from R40-R42 you'd expect to see some voltage dropped across them if the transistor...
Thanks Alan, I don't think it's the output bifilar transformer as I have no signal on the collector. Here's what I see during transmit: Emitter: 0.00 V DC ...
Peter, Try a 2SC1969 CB output transistor. Its only a HF device, not a VHF one, but the power handling is similar. Its actually slightly more robust and is...
I'm building the PSK-20 but I think the final, an MRF261, isn't working. It seems ok DC wise and it's being driven with the right amount of RF but nothing ...
Looking for a transformer with about 240 Volts a side at 150 ma plus two 6.3 volt windings for replacement in an AM glowbug transmitter. Needn't look good,...
... I just did a brief look at http://octopart.com/search?q=AWM1306 and found nothing. Any old data sheets - maybe a replacement could be made to work in ...
