I've been using with success end fed antennas on 40 m and 20 m for portable operations with a FT-818. One end of the wire launched on a tree as high as possible (or suspended to the tip of a 10 m fish

#antenna #qcxp40

I've used mine for WSPR as well but am not comfortable running the full 5W output for two minutes. Turning the supply voltage down to 9.2V on 40m produces 2 watts out and the QDX runs cooler.

#20m #antenna

Ted My God given fingers are my best troubleshooting tool also, well only when the voltage is much lower than 100 volts. Yes technical folk don't like the term counterpoise, but you produced a good on

#40m #antenna

For the final try without the tuner, I got 1.16:1 @ 7.055MHz, 1.25:1 @7MHz, and 2.01:1 at 7.3Mhz.

#qcx40 #40m #antenna

Steve - that looks like a really fun box of tricks, I love stuff like this! Dave, many thanks - I need to do some homework so I properly understand how these antennae work together. Everyday with this

#antenna

Hans can take it off in a week. or I will .. set your egg timer going. If they had done massive revisions to it then I would not give a monkey's Ar$e about the IP aspect because the Highly revised boo

#antenna #qrp-dx

For information on the Zepp, see sections 9.1.1.1.1 for the Zepp and 9.2.3 for the double-Zepp in the English edition of Rothammel’s Antenna Book (Krischke, DARC Verlag 2019). John F5VLF

#antenna #qrp-dx

Hi, Remember R10 is there for safety, i.e. if your aerial connection develop a short circuit, you may want to limit the current, most GPS aerials only draw 10’s of mA, so you can put in 50-100 Ohms, m

#gps #antenna

Larry sorry it appeared I was shouting ( BTW that would have been all caps). I simply did a copy and paste from the manual and apparently it used the manual formatting. ;>)

#gps #antenna

Does anyone use a receive antenna with the QCX? How do you manage T/R switching? Do you have a preamp? Thanks Richard - NS3C

#antenna #qcx #80m

I use Dosemu, or wine, a linux user. If need be I have a real 486dx with DOS6.22, win3.11, winxp or Linux (.9 slackware version). And if antique is enough a Northstar Horizon running a 10mhz z80 CP/M

#antenna

For QRP portable I have used the Emtech ZM2 Z-Match tuner. It is small, light weight and can match most any length of wire. That said my most efficient antenna for SOTA is the resonant end fed half wa

#40m #antenna

I continue to be amazed at how hot the receiver is. I heard a very strong OK7 near the end of the contest on 40 and thought conditions might allow a QRP contact, but no go. Turned on the IC-7300, hear

#antenna #qcx

Hi, i am using so called CCTV jacks with 6 pins, they fit exact in the cutting of the Bama case. The jack is a clip on type, the screws are not needed. I mouned them only to cover the holes. Ralf

#case #gps #antenna

JohnL. Buying Chinese toroidal is fraught with risk. If your QTH is North America, buy from Diz at Kits and Parts. Or buy from any of the big part suppliers like Mouser or Arrow. Buy more than you nee

#40m #antenna

Hi Arv, Thanks for your testamony regrading the LED and QRPp levels. I am taking your information about lighting the LED with 0.1 watts of rf as your hands-on experience. I would never have tried it.

#antenna

Ted, the frown-factor is real. Also, if you have VDSL coming in via the copper telephone wires, you can expect a lot of mush in your headphones. A mag-loop might well be your best option. The grass an

#antenna #qcx

Thanks Jess, It works now but i still gonna do the measurement you described. TU my vy 73 hanz YL3JD

#antenna

Steve, One last if you support the wire just off the fence (when you can) it may be less fuzssy in the wet. I'm talking inches away, using say electric fence insulators. I did that using trees and 5"

#antenna

It would depend on what you wanted to aspect you were wanting to tune- min SWR or Max signal. If you had a good stable signal source to listen to on the QCX, you might find the S-meter would respond a

#antenna #qcx