You can set the sort order of messages? Just click on the link in the date column. Your preferences will be remembered, so you don't have to do it again when you return.
The first start up went well, no smoke and funny noises :) and i have the correct volts 5V on R34 and 8 V on VR2, but when i connected the display i have one...
... Hello Tom, It sound like you have no VFO signal reaching the micro-controller - I don't have a diagram available at the moment so can't give you references...
... Hi Steve, i have done some measurements on all the transistors and IC1-IC4, used a battery with 12,8V when i measured.Only measured in receive mode thats...
Hi Tom, Don't worry about measurements that are a few % out. It doesn't sound as though the VFO is oscillating, check for dry joints, solder splashes etc...
... Hi Yes it was the L5 that i had to resolder so now i can tune the band but the noise is very low even if i turn the rf gain fully clockwise. I cant hear...
Tom, IfL5 was bad I would be sure some of the other transformers have the same problem Find yourself a very hot soldering iron and try to resolder them - note ...
Nearly there Steve! As I really did start from scratch, I only possess an AMU (kit) and a multimeter. Can you recommend where to get a suitable antenna and...
Well there goes all the hard work. I carried out the very first test, before any power applied, the test where we apply positive lead to supply positive and...
... Don't panic! Check that the washers under the nuts on the potentiometers haven't shorted tracks out - it is OK to remove these serated washers. ...
... Thanks, Steve, I'll have a look. Meantime I just check the schematic and tried to read diode D3....it is shorting in both directions where the other...
Is any one using a low cost power supply for the MKARS80, perhaps a wall wart or similar - interested in your experiances. How about a low cost dummy load -...
Sorry, attachments don't work... QRP Power Meter and Dummy Load Steve Yates - AA5TB AA5TB Meter Photo 1 HOME <http://www.aa5tb.com/index.html> E-mail...
3rd time lucky..here's the webpage for a qrp dummy load and power meter. http://www.aa5tb.com/qrpmeter.html You can just make the dummy load without the power...
I am actually using a 12V motor-cycle battery. I picked up two of them at a RSGB ralley last year for a fiver. I happened to have a car battery charger at home...
The instructions say to use a non-acidic adhesive to fix the transformers to the PCB. I would like to know if using a small amount of blue-tack would be...
I wouldn't bother. It only makes it more difficult if you ever need to replace any. Mine are sitting in their places just fine through their solder joints, and...
... I have seen it used - I use the same silicon adhesive used for "scrapbooking" - just make sure it says "acid free". Cyonacrelate (sorry cant spell!) has...
One question follows another.....what would you recommend for use as a microphone? Tried Moonraker but they didn't have anything to fit the 3.5 socket. And...
I picked up an old citizenBand PTT mike at a ralley. The seller gave it to me for free! (it was the end of the day). Cut off the original plug and with a multi...
Hi, bluetac may dry out after time. I used high-quality double-sided tape, though a small blob of non-corrosive silicon may do just as well. Cheers Carmel ...
Hey group. My MKARS80 was built several yeas ago and it drifts and jumps. So I read there is a fix...and I found the write up. Can I buy the correct components...
I finally got to power up today, after the initial ohms and voltage checks. But I only have a dummy load and I wondered if that would affect the adjustment of...
