开云体育

I have run many 'portable' station in different places.? I use an inverted V antenna (just pull up the center insulator) and have not seen any significant difference in SWR as long as the top of the

Really neat stuff Hans.? I've always wanted to make one of those also.? It's kind of inspiring and thought provoking, like flying a kite but much better!? I bet when the students and teachers see

Hi, to my opinion, this is not a Progrock1 or 2 question. It is simply a question of harmonics. And as it was said the proper measures taken. The Progrock alike chips generate a squarewave signal rich

Hi all My daughter, age 9, had her school science project fair today. Between XYL and Daughter they decided a U4B balloon tracker would be a good idea. Timing: poor (in the run up to Dayton). MANY

If you have sound enabled on the computers, do you hear any sound when you plug in the PR2? If not, then I would suggest to you the cable(s) or the board itself is the issue. If it makes a noise, what

Peter, what steps have you taken to shield the two devices from one another? Justin N2TOH

Hello Hugh It's still considered normal. With the Si5351A the frequency was normally within 1 kHz of 27.004 MHz. However the MS5351M appears to have lower capacitance and we find it is normally

I previously reported on interference to GPS reception caused by a Progrock (1) unit - see post #92316. Well, I now find that exactly the same applies to Progrock2.? This is not really surprising,

Steve, Sounds like what I do, put things aside thinking I will remember why:-) Good to hear it's going now. 73 Alan G4ZFQ

Hugh, I've seen 27.005+ reported, yours is higher than that. Might be a problem, I do not know. Note that the GPS does not correct for drift when transmitting. This has been a problem with non-TCXO

Hi there, I have 40M and 20M QCX+s and a 20M Mini all with Firmware Version T1.09a. ?I am hugely thrilled with how well the QCXs pair with the QLG2 GPS receiver for WSPR operation. The units are

After having built four QCX+ rigs I was used to being able to connect the probe from my external stand-alone frequency counter to Pin 2 of JP2. Using that method I was able to adjust the Reference

Okey-Dokey - removed two turns from L3 and I've not got a tad over 4.5 watts output into my dummy load. Good enough for me. An additional 500 mw isn't gonna make much difference for my style of

Hey All, I still have an unbuilt QDX 3a, but I got curious as to why Winlink won't work on the QDX, and it's been an interesting rabbit hole to go down. The ARDOP standard does have 4FSK modes, and

I use a "LAMP ZIP-CORD .... antenna and feed line <https://www.qsl.net/ke8di/zipcord.html> " on my OCX-20 meter dir often .... had no problems =) [email protected]> wrote: -- *73's Pat N5VMO*

I popped the lid and took a look at the 7 resistors mentioned here on the "moving the CW filter" section on the QCX mods page ( http://qrp-labs.com/qcx/qcxmods.html#cwcenter ), all seem to match up

Thank you all! Pat: I have already made a dipole antenna, but am worried that once cut to length the tuning may change between setups, say due to the presence of nearby trees or being closer to the

For the QCX, you want the sleeve to be ground and the tip to be the contact. It’s easier to use a tip/ring/sleeve cord but the settings also allow you to use a tip sleeve if needed. Then you have to

I bet there's something in the RSGB Handbook. For a 20M dipole antenna, you'll need about 5 meters of sturdy wire, a center insulator, and enough feedline to go from the center insulator to your

Build a tunes cut 20m dipole and save the tuner for the multi-band rigs later on ;=) [email protected]> wrote: -- *73's Pat N5VMO* "Information is the oxygen of the modern age. It seeps through