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Author Topic: Need halp wif antennaz  (Read 2592 times)

Offline Dash Bronzehand

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Need halp wif antennaz
« on: June 16, 2013, 0519 UTC »
ATM I am running a longwire antenna, a have a couple, this just happens to be it ATM.

It is made from RG58COAX cable, pretty ideal for SW/HF Frequencies. However i believe what you receive is dependent upon the length of the wire? the length is around 9 meters / 30 foot.

Am i right in saying only 20,17,15,12,10 METER bands are accessible through this? 


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Re: Need halp wif antennaz
« Reply #1 on: June 16, 2013, 0915 UTC »
Just use a little receive antenna tuner on it :)


Offline BoomboxDX

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Re: Need halp wif antennaz
« Reply #2 on: June 20, 2013, 1041 UTC »
For receive only, 30 ft / 10 meters of wire should work OK throughout the HF spectrum.  I've had good reception on antennas that were around that length.

You'll probably get more gain with a longer wire, though -- especially on the lower frequencies.
An AM radio Boombox DXer.
+ GE SRIII, PR-D5 & TRF on MW.
The usual Realistic culprits on SW (and a Panasonic).

Offline RCCI

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Re: Need halp wif antennaz
« Reply #3 on: June 22, 2013, 0333 UTC »
I only use a longwire of 30 Ft. (off the ground 9 feet)due to restrictions--but also use a MFJ Versa Antenna Tuner 901B for the longwire and a MFJ -956 Band Tuner for the radio. Works well eeking out the faint signals. Regards...   Steve
+ Equipment: Yaesu FRG 100B, Kenwood R-1000, Yaesu FRG7,
+ Antenna: 75' dipole, height 21', running north and south.  Chicagoland area.
 *** QSLs welcomed at: gangwise1997@yahoo.com   Thanks!   ...Steve

Offline herman munster

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Re: Need halp wif antennaz
« Reply #4 on: June 26, 2013, 2039 UTC »
Hi, don't forget the earthing, modern houses have kind of bonding, not sure what ? maybe some kind of counterpoise which is just a length of conducting wire related in wavelength to the bans in use. Maybe this is overkill I don't know.

Tuned loops are a smaller in size and can be directive, plenty info on You Tube...see if I'm allowed to put a link here.

MFJ do a ready made antenna, but its exspensive..look at the videos on You Tube, a trip to a local ham radio club could give a better ideas on antennas..heres a couple of links from you tube.http://www.youtube.com/watch?v=YswnVmAKSP0

Offline jFarley

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Re: Need halp wif antennaz
« Reply #5 on: June 27, 2013, 2121 UTC »
Tuned loops are a smaller in size and can be directive, plenty info on You Tube...

Tuned loops aka Resonant Loops (RLs) definitely can be smaller and definitely can be directive with some caveats.  I have been a user of small RLs for a number of years and will attest to their performance, and also to their potential for further development.

There is a ton of material posted on the tubes, some of it good, some of it bad, some of it incomplete.  To buy a RL, one has to deal with a very limited set of commercial offerings.  To build a RL - Roll  Your Own in MW parlance - all this information needs to be filtered carefully.

I do have a design for a RL which works very well for me from 90 to 41 meters, and that is pictured here:

I would be more than happy to share that design with others, and I will start to tidy up things (schematics and drawings) so that this can be posted at some point in the future.  In the short term, I think I will start a new thread in this Equipment section which will discuss some of the advantages/disadvantages of using a Resonant Loop, and what can realistically be expected.
Joe Farley, Near Chicago
SDR-IQ / R8 / R7
Remote Resonant Loops for HF and LF / ALA 1530
Active 60" Whip / PA0RDT
QSLS appreciated to:    jfarley44@att.net


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