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Re: chalk line antenna (any length)
Sharyl writes: The loss would be insignificant. Essentially, because the the reel is on the end of the wire, it looks like a blob of metal to HF radio frequencies, due to inter-winding capacitance.
By KQ6XA · #6536 ·
Re: QST Article... Amateur Radio-The Last Line of Defense
the Hi Paul Glad you enjoyed the bear story...ham radio saved our bacon - pun intended ! Next trip to the north will also include the MP1 antenna as backup and a lot lighter gel cell as the Argosy
By lhilborn@... · #6535 ·
Re: Z11 batteries
I went through this! the battery idea came about using the older technology Ni-cads. when I got my z-11 the same thing happened. everyone was selling higher output ni-cads only. Then I tried to use a
By Sharyl - W3VET <w3vet@...> · #6534 ·
Re: FT817 power supply
Don, I believe there are a number of us in this group that purchased these wall-warts with varying success. Mine throws out so much hash from HF->440 I am only able to use it for charging the battery
By Bryan Nehl · #6533 ·
Z11 batteries
Hey Guys I just got my Z11 which works very well. The manual states that 2 rechargeable 9v batteries in series can be used and then cautions not to use alkaline batteries since the voltage would be
By Bill Terry · #6532 ·
Re: Which Performs Better: ATX or MP-1?
Demetre: Most of my operations with the FT817 are "motel Mobile" and I have observed the same characteristics with the MP1 outperforming my previous dipoles and loops. The MP1 seems to be much less
By IslPilot@... · #6542 ·
Re: Steel tape counterpoise
Hmm. Yaesu could have saved backpackers a bit of weight by building in a device to activate detonators. Julian, G4ILO such as
By julian@... · #6531 ·
Re: Steel tape counterpoise
You're thinking out of the box If you can find a combat engineers measuring tape they are made out of stainless steel. They also tell how much TNT is needed to dismantle various things such as bridge
By Sharyl - W3VET <w3vet@...> · #6530 ·
Re: Antennas
For those with an ATU a cheaper and probably lighter solution (the Pro-Ams are quite heavy) might be to use plain old aluminium tubing. You could use three different diameters that fit one inside
By julian@... · #6528 ·
Re: chalk line antenna (any length)
Bonnie Wrote: ----------------------- I know that contradicts what we were talking about the other day. I'm really glad to hear it. If I have say-20 feet wound up with 22 gauge coated wire how much
By Sharyl - W3VET <w3vet@...> · #6529 ·
Re: chalk line explanation -chopsticks
Cam biet nuouc mam! Cortland
By Cortland <ka5s@...> · #6527 ·
Re: Antennas
NW Cumbria. I guess the mid-point between us would be round about Stafford. For the cost of the petrol for the round trip I could buy another couple. :-) or :-( Julian, G4ILO could meet
By julian@... · #6526 ·
Re: Steel tape counterpoise
You will have already seen a message here that it simply acts as a bit of end loading. Otherwise, no worries. Really, one need not pick nits; whatever works, works! With a bit larger nut and washer,
By Cortland <ka5s@...> · #6525 ·
Re: chalk line explanation -chopsticks
Only if you put Nouc Mam on your Phood. Then you shall reach full elevation
By Sharyl - W3VET <w3vet@...> · #6524 ·
Re: chalk line explanation
Hmm, looks like the builders who built the walls in this place could have done with one. :-) Julian, G4ILO use them
By julian@... · #6523 ·
Re: chalk line explanation -chopsticks
Sharyl, I was waiting for some Zen reply like "First use fingers, then chopsticks until you reach elevation." Grasshopper Cortland
By Cortland <ka5s@...> · #6521 ·
Re: Steel tape counterpoise
Thanks. What happens with the coiled up part of the tape? Is it effectively shorted out, or does it make a coil, like with the chalk line solutions being discussed? Julian, G4ILO
By julian@... · #6522 ·
Re: radio shack roll up antenna as counterpoise
Waters and Stanton have something similar. It is called the Sangean ANT-60 short wave antenna. It holds 7 metres of wire and costs 15 quid. I don't know if it is the same as the Radio Shack one that
By julian@... · #6520 ·
Re: chalk line antenna (any length)
Sharyl W3VET writes: I've found that you don't need to reel out the entire wire. In fact, the spool can be reeled in to any suitable length... and even used to resonate if you don't have a tuner. The
By KQ6XA · #6519 ·
Re: chalk line explanation -chopsticks
Sorry for being a dumbo, but what does "use chopsticks...until you reach elevation" mean? There are no Dumbo's here. I wasn't very clear. I use chopsticks to keep the feedlines close together like
By Sharyl - W3VET <w3vet@...> · #6518 ·