Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-20 Thread Jim Rhodes
OK, get a big fiberglass spoiler on the back and cram as much wire as you can in it. The feed it against the body via An autotuner on the inside of the trunk lid. After showing her the drawing of that you shouldn't have too much trouble talking her into a screwdriver antenna. Jim Rhodes On Jul

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-19 Thread Merv Schweigert via Elecraft
Fred your close to CA and also perhaps you were mistaken for a Russian. You know how it is these days. Would tell a story but its too long and OT how I was mistaken for Russian spy in Shanghai in 1990, taxi driver got the idea and ratted me out. Carrying a telegraph key and papers to operate

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-19 Thread Fred Jensen
Ummm ... no. Nor is the wife going to buy it on a family car. Operating with my K2+Alexloop on a small hill in a local park once, I was approached by two Sheriff's Officers, one had his gun[or Taser] out. Someone had reported a spy, or CIA agent, onthe hill and they wanted to to see my ID.

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-19 Thread rboutell
So I guess this wouldn't qualify as stealthy :) - 73, Russ - W9RB -- View this message in context: http://elecraft.365791.n2.nabble.com/Really-OT-Inside-the-vehicle-HF-antennas-possible-bonus-points-tp7632459p7632578.html

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-17 Thread Lyle Johnson
In my Model S all AM/FM broadcast reception antennas are hidden in the driver-side mirror housing. I suggest you simply make a physically small antenna that can fit under some plastic part of your car. Wayne has a Prius so it is mostly plastic bodywork providing lots of opportunities.

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-17 Thread Peter Eijlander (PA0PJE)
Not only FM, Ron. In my car it's for both FM, MW and LW The lines are formed in a strange way, not just horizontal parallel wires but here and there are openings. It works well on all three bands, that is until the last MW and LW transmitters are turned off here in Europe and FM will be left

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Matthew Cook
Mount your iPad/Tablet to the dash, install 3G/4G internet capable router (internal antennas) into the car, Heil Headset & RR1274 then remote into your K3/KPA500/KAT500 remote station at home. Works rather nicely. Otherwise ruggedised whip tuner under the bonnet (err hood) with a thin discrete

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Phil Kane
On 7/16/2017 10:37 AM, Fred Jensen wrote: > The Southern Pacific RR [now Union Pacific] used 160 MHz DDRR antennas > on some of their signalling equipment. Generally on top of a big steel > box beside the track(s). Had a base plate bolted to the box, and a > single 25-30 cm element, parallel to

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Phil Kane
On 7/15/2017 8:37 PM, Bob McGraw K4TAX wrote: > Seems I recall a DDRR antenna which was a low profile, roof mountable > antenna. Are you referring to what we called the "towel rack" antenna which was originally made for Air Rescue Helicopters in the Vietnam-War era? They were replaced by the

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Phil Kane
On 7/15/2017 8:18 PM, Randy Bright wrote: > Would there be a way to repurpose the defrost wiring that is sandwiched > between the layers of glass in some back windows and use that thin wire for > your antenna? Has been done for sneaky mobile DF systems decades ago. We called then "defroster

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Phil Kane
On 7/15/2017 7:53 PM, Michael Chowning wrote: > Now all you have to do, is get permission to rack mount your radio in place > of the passenger seat. > Seriously, here is a link from Ohio State Unversity on experimental antennas > in clothes of the military. Seriously -- a certain three-letter

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Barry Baines
Wayne: > On Jul 15, 2017, at 8:53 PM, Wayne Burdick wrote: > > I’m dealing with one of the last unsolved problems in amateur radio: how to > operate HF mobile without an antenna. At least not one that, according to > some vehicle co-owners/spouses, would defile your new

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Clay Autery
Yep... we owned at least one car growing up that had the antenna in the windshield As I remember it, it came up from the bottom of the center windshield... two parallel black (tiny) wires. At the top they each bent out toward the sides of the windshield about 2 inches from the top... 1 inch

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Fred Jensen
The Southern Pacific RR [now Union Pacific] used 160 MHz DDRR antennas on some of their signalling equipment. Generally on top of a big steel box beside the track(s). Had a base plate bolted to the box, and a single 25-30 cm element, parallel to the top of the box, spaced about 6-7 cm above

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Ron D'Eau Claire
PM To: Wayne Burdick Cc: Elecraft Reflector Subject: Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points) Would there be a way to repurpose the defrost wiring that is sandwiched between the layers of glass in some back windows and use that thin wire for your antenna

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Kevin Cozens
On 2017-07-15 11:18 PM, Randy Bright wrote: Would there be a way to repurpose the defrost wiring that is sandwiched between the layers of glass in some back windows and use that thin wire for your antenna? I was going to mention this. I'm sure that I have read about someone who has done that.

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-16 Thread Barry
Even if you can get something to radiate, there's always the issue of RFI to the car's electronics. Careful! Barry W2UP -- View this message in context: http://elecraft.365791.n2.nabble.com/Really-OT-Inside-the-vehicle-HF-antennas-possible-bonus-points-tp7632459p7632472.html Sent from the

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Bob McGraw K4TAX
Regarding the defrost heat element, there's two terminals, one on either side. However with the resistance of the defrost wiring in the window, it might be more like a dummy load. Of course one could just feed one side against the auto body, unless one drives a Corvette which is mostly

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Randy Bright
Would there be a way to repurpose the defrost wiring that is sandwiched between the layers of glass in some back windows and use that thin wire for your antenna? Randy AK4QK Member Calhoun County Amateur Radio Assn. NAQCC #6312 On Jul 15, 2017 7:54 PM, "Wayne Burdick" wrote:

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Michael Chowning
Spouse proof mobile antenna on that new car: 1) go to a customizing shop, and have them remove your sunroof 2) take the sunroof to a custom glass shop, have them lay out one layer of shatterproof glass 3) you lay out appropriate length thin wire on the glass according to the frequencies you

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Alan
One of my colleagues at HP told me he once made a CB antenna by feeding the front window of his car between the rear-view mirror and the dash. Basically a big slot antenna. He claimed it worked great. I don't remember how he said he matched it to 50 ohms. Alan N1AL On 07/15/2017 05:53 PM,

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Mike Flowers
You may want to have some minimum distance required for the QSO. Two KC2s and a short length of coax would do the trick between two cars parked next to each other. ;>) -- Mike Flowers, K6MKF, NCDXC - "It's about DX!" > On Jul 15, 2017, at 5:53 PM, Wayne Burdick wrote: >

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Kevin der Kinderen
Have you considered an isotropic antenna? I understand it is an ideal antenna that radiates in all directions and has no physical form. Sounds like the perfect stealth antenna to me. I've seen them advertised in the back of True Detective magazines alongside the x-ray glasses. I was thinking a

[Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

2017-07-15 Thread Wayne Burdick
I’m dealing with one of the last unsolved problems in amateur radio: how to operate HF mobile without an antenna. At least not one that, according to some vehicle co-owners/spouses, would defile your new sedan. For 10 bonus points that have only philosophical value, your challenge is to create