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Used to be an issue on good old CB gear, some of the Japanese Cybernet chassis stuff had a 'Japanese' SO-239 connector fitted which was usually covered in brass dust from cross threaded PL plugs.

i fear i have blown the pa as i was getting 1,8 w now only .1 can the pa be replaced with something a little more robust !!!

Stumbled across an interesting bit of information. I have bought some UHF? PL-259 / SO-239 connectors from Asia and found that they didn't quite fit (i.e. screw on properly) other connectors. Seems

Hi Bruce. Both qlg1's were built identically, the u3s one takes its power from the u3s, which is battery powered, the progrock one is fed from an ac psu which feeds a 7805. The progrock and receiver

Defunct ADSL routers often have a nice but unregulated 'big iron' transformer based PSU, of course they need a regulator but it's a small price to pay for a noiseless PSU.

Hi Bruce A digital signal changing at a rate of 9600 baud will generate noise. Whether or not that noise is radiated enough to be troublesome, or conducted through power supply lines or ground enough

Hi, Andy - Thanks for the reply.? I was interested to see that you have the noise problem with one QLG1 and not with the other.? Assuming that your two GPS units are pretty much identical, I'm

Curt Another source of inexpensive 5V wall warts is the popular cell phone chargers. They usually have good regulation and put out 1A. Local Dollar Stores have them for US$1.00 plus tax. Arv _._

Curt, This is a photo of the one I got from Jameco. I think it was about $10.00. I’ve had it running my clock for about a year with no issues. It’s is a linear and not a switching supply. Hope

I think that's right Hugh, there's a blurry pic of one in a radio on my QRZ page, its the green jumper between the third and fourth pin from the end of the header not by the LE, if you didn't already

Allison, Agreed. But if the item is not as described Ebay will ensure you are refunded. 73 Alan G4ZFQ

Shirley. Actually several vendors exist in Amazon (bit more reliable). There is both the pro-mini 2560 (no CHA340) and the version with the CH340. They run about $13.95. I do have a few of the

I'm very interested, also, to know if someone is willing to help with troubleshooting, if needed... Lloyd, K3ESE (almost) QCX 40

Shirley, Only one issue.? I do not view Ebay as a vendor.? I would use them only if I had that dollar I'm willing to ignite.? Which is not any day soon. I've always held you can expend money on

Which 2 pins Scott ?? 1pps and Gnd? or other pins ?

Thanks for taking the time to reply Alan. The PIC appears to have PR1.01A firmware in it according to the label. I do have the 1pps line grounded. I tried it again making sure the LED blinks 4 times

HI Hugh, When I first built mine I made the mistake of not jumpering 2 pins that need to be jumpered if not using it with a QCX. Once I did that everything programmed great. FWIW. 73 Scott ka9p

Hugh, (Assuming you have the latest firmware.) Perhaps take a refresher read of the manual. The manual describes the progrock acknowledges a successful programming action by way of 4 flashes on the

I want to use a ProgRock as an oscillator at 108.004166 MHz through a 96 multiplier to generate 10.368.4 GHz. This is really making me feel dumb but I cannot for the life of me get my ProgRock to

I should add that it isn't any cheaper than a full size Mega2560 clone; you can also buy those for $10 now. But it is smaller.