The object is to establish a stable RF ground and not necessarily a very low ohmic one. Drive three 4-8' rods (use a rented rotary hammer drill) will do for starters with say 3 20-30' radials at each
Im still in favor of Slinkys for a short antenna. Rust prevention is an issue or use the brass version for more money. Now that I have the 4 long 2 wire versions up and running well the next step wil
After rereading I caught a little boo boo. A single wire Beverage can still use a 9:1 transformer, its the termination resistor that must be reduced to compensate for ground resistance so you wind up
I show better than modeled or book directivity as low as the 175KHz area EU/AF LF BCB with my 750-900' versions. For NDB's its often like pointing a flashlight. On the MF BCB its always amazing what
CATV requirements start at 5MHz so I have my doubts that the cable is at fault. Ive heard a similar complaint from Australia with copper braid RG-6 so wonder if it is a non USA product problem. Maybe
Im currently using a pair of Ameritron RCS 4's and their isolation is horrible as designed. Im working on my own design using cheap 1 GHz relays with 70dB of isolation at HF. Then I can also reduce t
At least in the old days you could clear some space with key clicks (-; And to think I started contesting with a Drake 2B (talk about overload!) in 63 before going rather crazy with a major modded 75
I picked up 2 dozen 24VDC DIP style at a local hamfest after running home with one and testing isolation. They were $1 each. Look in Mouser, DigiKey, Allied and other catalogs to find model # and spe
I have one single wire Beverage that was installed on the low brush 4-12" above the soil that worked well in a direction I had RFI from a neighbor. It is now under 4' of snow and ice and appears to w
Yep, and having heard a few that were obviously that way Ive lost respect for a few "former" DXers. Running 5-10KW or more was bad enough and now this Carl KM1H ______________________________________
So does that mean the guy in his Brooklyn hi rise without any gear can operate X number of stations in the US in say the 160M contest and likely win? There is no rule I see about not moving the 500m
Theoretically a well equipped QRO mobile could win a 10M contest just by having dead band access to almost every state for multipliers and likely good access to the Carribean, etc. Granted its a stre
It would be interesting to see the K9AY with a preamp set to give the same "gain" as a Beverage added to those signal reports in the future. Since the Beverage is a non resonant piece of wire Im curi
Ive been running comparisons between European BCB down in the 200KHz region, some NDB's, Experimenters band at 500KHz, AM BCB, and 160M for many years. The 500KHz section only for a few years. While
Im about ready to beat my head against a similar wall. Currently there are 4 two wire reversibles plus an almost BOG pointed at a noisy neighbor. Two more reversibles are planned as this past season
Ive run indoor CAT-5 about 250' to a remote building where a PC is located. It is elevated about 8', hung from the CATV hardline and control cable bundle, and has been in use about 12 years, about 10
I havent been able to detect any difference between terminating and floating the unused direction on a 2 wire reversible. That is not to say that a 50-75 Ohm termination may offer a benefit for TX RF
My TS-940 has the same setup but not the TS-950SD and many other rigs. I use a toggle switch an high isolation DIP relay to do the control, under $5 in parts. Carl KM1H ______________________________
W1KM found that out as they didnt work at all stretched over a saltwater marsh out on his Cape Cod contest station A Beverage needs a relatively poor ground to slow down and tilt the incoming wave. O
I use mine more on the BCB and below than on ham bands. Contrary to what the books want you to believe they show excellent directivity right down to the LF BCB near 200KHz. These are only 750-1000' l