On Jan 8, 4:52*pm, Steve wrote:
On Jan 8, 7:22*pm, RHF wrote:
On Jan 7, 5:30*am, Steve wrote:
On Jan 7, 1:41*am, RHF wrote:
On Jan 6, 8:58*pm, wrote:
On Jan 6, 8:07 pm, RHF wrote:
FO&A,
Which Noise Cancelling Antenna Would You Choose ?
Timewave [JPS] ANC-4 RF Noise Cancellerhttp://www.universal-radio.com/catalog/filters/0094.htmlhttp://www.ti...
MFJ-1025/1026 Noise Cancelling Enhancershttp://www.universal-radio.com/catalog/preamps/3541.htmlhttp://www.mf...
Why 'Choose' One Noise Cancelling Antenna over the other ?
Do You Use One of these Two Noise Cancelling Antennas ?
Do You Like the Noise Cancelling Antenna ?
Do You Get the ResuLts You Wanted with the Noise Cancelling Antenna ?
Would You Buy a Noise Cancelling Antenna again ?
Have You Tried a Noise Cancelling Antenna and Don't Like It ?
i want to know - iane ~ RHF
*.
I have the ANC-4 from back in the day (JPS). It workes with my long
wire. I can't get it to work with the Wellbrook though others have
claimed to do so.- Hide quoted text -
- Show quoted text -
M...Sushi,
My use/application would be with an Inverted "L" Antenna; plus
a Snake {Coax Cable} 15 Foot Vertical Antenna located outside
as the Noise {Sense} Antenna.
~ RHF
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-I have the Timewave unit and like it very much. I use it with
-a Wellbrook ALA-330S, using an active whip as the 'sense
- antenna'. It's made a big difference for me and I've never
- regretted buying it.
-
- I've never used the MFJ unit so I can't comment on its
- effectiveness.
Addition Thoughts and Comments :
One of the things that I like about the MFJ-1025/1026
Noise Cancelling Antenna {Phasers} is the fact that they
have a SO-239 Jack for the Auxiliary {Noise} Antenna.http://www.universal-radio.com/catal.../3542rear.html
MFJ-1025/1026 Noise Cancelling Enhancershttp://www.universal-radio.com/catalog/preamps/3541.htmlhttp://www.mf...
While the Timewave [JPS] ANC-4 RF Noise Canceller
uses an RCA Jack for the Noise Antenna [J1]http://www.universal-radio.com/catalog/preamps/0094dia.html
Timewave [JPS] ANC-4 RF Noise Cancellerhttp://www.universal-radio.com/catalog/filters/0094.htmlhttp://www.ti...
I plan on using a 15 Foot Vertical 'Snake' Antenna made
out of a single piece of Coax Cable for the Noise {Sense}
Antenna with the Noise Cancelling Combiner/Phaser.
I want this Noise {Sense} Antenna about 25 away from
the House to pick-up the local outside Noise.http://groups.google.com/group/rec.r...e30c9dfd1a8b21...
15 Feet Vertical Noise {Sense} Antenna
o
l
l
l
l
l
F=====================================P-
'o' =End Insulator for Rigging Rope
'l' = 15 Foot Vertical Antenna Element using the
Center Conductor and Insulator of the Coax Cable.
'F' = Snap-On Ferrite Bead placed where the
Antenna Element begins.
'=' = 35+ Feet of Coax Cable feed-in-line
'P-' = PL-359 Plug to connect to the Noise Cancelling
Combiner/Phaser.
FWIW - I understand that the MFJ-1025 without the little
built-in Whip {Noise} Antenna is preferred over
the MFJ-1025 that has the little built-in Whip {Noise} Antenna.
~ RHF
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-
- I suggest that you keep an open mind about what serves
- as your noise antenna. You might find that the coax antenna
- described above is just the ticket. However, I hope you'll at
- least try a few different kinds of antennas, or a few different
- configurations/lengths of your wire antenna, to see what
- works best most of the time. You might be surprised!
-
Steve - That is all very true.
Three Different Noise "Sense" Antennas To Use For
Noise Cancelling Antennas With An Antenna Phaser.
Noise "Sense" Antenna # 1 - Short Vertical Antenna :
The short 15 Foot Vertical Antenna is a good 'starting-point' :
Since a Vertical Antenna should 'Sense' equally in all
directions {omni-directional} from all noise sources that
surround it.
Both the MFJ and Timewave-JPS Boxes have a Noise Antenna
"Gain" Adjustment so hopefully 15 Feet will be in the useful
Range of this Gain Control. Otherwise, I will have to shorten
it down to 5 Feet and try again. But, if I do shorten it down to
5 Feet : I still want the Top-End to be at about 15 Feet above
the surface of the ground; meaning that part of the Coax Cable
will also be part of the Vertical-Up-Leg.
Noise "Sense" Antenna # 1S - Shorter Vertical Antenna
Five Feet (5') Vertical Noise {Sense} Antenna
o - 15 Feet above the ground
l
l
F
ll
ll
ll
ll===========================P- Ground Level
'o' =End Insulator for Rigging Rope
'l' = 5 Foot Vertical Antenna Element using the Center
Conductor and Inner Insulator of the Coax Cable.
'F' = Snap-On Ferrite Bead placed where the Antenna
Element begins and the Outer-Shield Ends.
'll' and '=' = 45 Feet of Coax Cable feed-in-line
'P-' = PL-359 Plug to connect to the Noise Cancelling
Combiner/Phaser.
Noise "Sense" Antenna # 2 - Short Dipole Antenna
Beyond the 15 Foot Vertical Antenna; I have also though of
trying a Short 6-Foot Tip-to-Tip Dipole Antenna mounted on
a 10 Foot piece of PVC Pipe and directly wired to a Coax
Cable feed-in-line. Manually position the Dipole Antenna
one-time for the Best Noise Pick-up and Cancellation.
Noise "Sense" Antenna # 3 - One-Metre Loop Antenna
Next might come a single-turn One-Metre Loop Antenna;
again mounted on a 10 Foot piece of PVC Pipe and
directly Wired to a Coax Cable feed-in-line. Manually
position the Loop Antenna one-time for the Best Noise
Pick-up and Cancellation.
~ RHF