Search found 121 matches

by Andrew (grayhat)
Sun Mar 24, 2024 7:45 am
Forum: General Discussion
Topic: coax type
Replies: 4
Views: 447

Re: coax type

by Andrew (grayhat)
Wed Mar 13, 2024 2:46 pm
Forum: Field Kits and Reports
Topic: Cheap 32’ carbon fiber mast
Replies: 3
Views: 8274

Re: Cheap 32’ carbon fiber mast

Also, carbon fiber masts are conductive, so they're a "no go" if one wants to use them for a vertical antenna, better looking for fiberglass poles, those will do double duty to both act as center support for a dipole/doublet or to put up a vertical antenna just by hanging the wire at the t...
by Andrew (grayhat)
Wed Mar 13, 2024 2:43 pm
Forum: Questions & Advice
Topic: RG316 recommendation
Replies: 7
Views: 588

Re: RG316 recommendation

Late on this one, I suggest looking at "Messi & Paoloni" products, and not just coax cables, but connectors too; I've used their products several times and never had to complain

my 2 cents
by Andrew (grayhat)
Wed Jan 31, 2024 4:25 pm
Forum: Questions & Advice
Topic: sBitx - any good ?
Replies: 2
Views: 1200

sBitx - any good ?

Just noticed that the same folk(s) behind the uBitx made a new model, this one is called sBitx https://www.hfsignals.com/index.php/sbitx-v3/ and seems to offer quite a buch of features, but then it's an SDR and I wonder if it may be plagued by the same issues of other SDR based rigs, including the f...
by Andrew (grayhat)
Mon Jan 29, 2024 10:22 am
Forum: Field Kits and Reports
Topic: Amazing what 3 watts can do.
Replies: 4
Views: 2586

Re: Amazing what 3 watts can do.

N8TGQ wrote: Sun Jan 28, 2024 9:28 pm Since you're running from your car, maybe try an antenna mount right on the car. It will beat any ground plane you can lay out under the tripod by a lot!
A drive-on antenna base and a relatively short (5...9ft) fiberglass telescoping mast to keep the whip above the car may fit well
by Andrew (grayhat)
Thu Jan 25, 2024 7:46 am
Forum: General Discussion
Topic: Anybody home? Need a help!! thanks
Replies: 1
Views: 1167

Re: Anybody home? Need a help!! thanks

Maybe if you add some infos and detail about the kind of help you need, someone could help you, otherwise...
by Andrew (grayhat)
Sun Jan 21, 2024 4:38 pm
Forum: General Discussion
Topic: Ground antenna for TX ?
Replies: 2
Views: 1774

Ground antenna for TX ?

Apparently it works

https://youtu.be/N4V2H5dzaeU

at least judging from the above video

may be worth a try :)
by Andrew (grayhat)
Sun Jan 21, 2024 9:05 am
Forum: General Discussion
Topic: Kite lifted antennas
Replies: 3
Views: 2476

Re: Kite lifted antennas

If the UnUn is DC shorted, like this one http://www.jumaradio.com/The-challenging-Unun-Transformer/ and if the ground goes to a decent ground stake, there shouldn't be need for a bleeder since the antenna would effectively be connected to ground at DC; alternatively one may try a galvanic transforme...
by Andrew (grayhat)
Mon Jan 08, 2024 8:20 am
Forum: Questions & Advice
Topic: Best beginner CW transceiver kit to start with
Replies: 10
Views: 5956

Re: Best beginner CW transceiver kit to start with

4StateQRP is a great source alright. I've built a few of their kits with good results. Check out the transceiver kits at "qrpme.com" they also have ALOT of other useful and quirky fun kits to learn building with. Be prepared to spend some time at the site just looking around. 72 W5GUS Dal...
by Andrew (grayhat)
Sat Jan 06, 2024 1:09 pm
Forum: Questions & Advice
Topic: Counterpoise with TX500
Replies: 3
Views: 2365

Re: Counterpoise with TX500

if using an EFHW then you won't need a counterpoise (ok, a short one may improve radiation but it isn't mandatory), on the other hand, if using an EFRW (a so called "random") then you will need a cointerpoise to both improve radiation and matching through the necessary (in this case) ATU I...