开云体育

Hi After seeing the shop open again over the weekend, I talked to some other amateurs about some more purchases today, but returning from work, I notice its almost sold out again. Is it going to be

Hi Dan Driving the frequency shift with the tone test output is not a good idea in my opinion. Yes it will *look* like it is working Ok, but in fact what you are actually doing is then producing

Hi All, My beacon is on the air now it is transmitting VK5DJW on 6s slow The issue was the output form pin 3 of the chip, I was only getting something like 0.-0.9v out for freq shift, so i used the

Hi Arv K7HKL, Thanks for the advice I will try that out tonight, I have a couple of things to try now but I will add that to the list, I can definitely see the freq change when i touch parts near

Dan VK6DJW Try touching the oscillator area while watching it on Argo. You should be able to see it change frequency. It is possible that you are watching some other signal resulting from overload

Hi Steve, Thanks for your reply I appreciate the advice, I returned the led to the correct way around and I have about 15-20mm twisted tightly on the gimmick capacitor to try and get as much shift

Hi Guys, The shop is back open.....I have another batch of 100 beacon PCBs to kit. I'll be ordering more crystals and toroids... 72/3 de Steve G0XAR -- It is vain to do with more that which can be

Hi Dan, Sorry to hear you are having trouble. I have copied this to Hans who designed the beacon - he is extremely busy at the moment and may not have time to reply. So consider my words a temporary

Hi all, I was hoping someone could give me some advice on the setup for the 30m QRSS beacon kit. I have built the kit set it to 10.14050 MHz. I tuned for max signal on CW/USB using a Yaesu

Hi, I completed a document about modifying the Hans Summers QRSS TX kit for 12V PA operation. http://www.knightsqrss.blogspot.com/ Thank you to Joachim PA1GSJ for hosting the

Hi, I suspect a few of us are running these TXers off a 12/13.8 V PSU and regulating the PCB down to 5v. A week or so back I considered running just the PA off 12V. I think some have already tried

My 10.140 kit has not been on the air much due to antenna work that needs to be done. Instead I made some spectrum measurements. Harmonic suppression seems really good. But there are some spurious

Thanks Kevin will try that - one or two turns either way made so little difference that I couldn't tell which way to go Tim

Hi, I reckon it could be worth trying a 20% reduction in turns, as a start. Kevin ZL1UJG

Guys I've just completed the 40m kit and it is operating properly except that I cannot adjust the frequency enough to bring it to the correct frequency. The closest I can get is 7000350. I've tried

Hi, Verify the total DC Current. I remember about 85-90 mA from my unit when set at 100 mW output when it was in FSK CW mode (now CW). Is your RF cable OK and correct impedance (75 ohms can throw a

I built my first 30m beacon and it worked first time, but I have not been able to get the power out up to 100mW (20dBm). I only get about 54mW (17dBm) into a 50 ohm load. I measured this several ways

I have put a 5.6pF miniature ceramic in series with the 1.5-5pF that I used for C9. This gives me a frequency swing of 405Hz between 3500.720KHz and 3501.125Khz which makes tuning to the desired

..and have some questions: 1) Is there any particular reason why the 2N7000 was chosen over the VN10? The VN10 comes in a number of versions but the only significant difference I can see from the

Anyone built the Pongrance 30meter beacon rec kit? see http://www.pongrance.com/gcrx-14100.html At $35 it looks like a bargan. Paul k5wms