High Power Multiband Magnetic Loop Antenna 17-20-30-40 Mts

Description

NEW!.................NEW!...............NEW!..............NEW!................NEW!
RV’s – DxPedition – Camping – Restricted HOA’s – Apartments- Boat House –Townhouse – Emergency- Penthouse
OPTIMIZED FOR 20 Mts & 40 Mts BAND OPERATION
NEW ! HIGH POWER Multi band Magnetic Loop Antenna 17-20-30-40 Mts
This antenna is easily convertible: Active loop up or down by adding simple 38 inch 3/4 PVC pipe
The antenna is light, portable, serviceable, handles a reasonable amount of power, characteristic Q rejects some interference, and is capable of detecting some weak signals.
The High power magnetic loop handles 100W PEP easily
. (Model SML-500-1 GHOST Edition)
PRACTICAL COMMUNICATIONS LLC
offers the High power SML-500-1 MAGNETIC LOOP Antenna GHOST edition
PRICE at 5.00
Plus shipping. Shipped UPS or Fedex Ground to any of the contiguous states of the Continental USA.
All
Stainless Steel Bolts
, Nuts and Washers
INCLUDED!
.
Customer feedback:
8/9/2018
So after locating some noise and I got that taken care of.
I have always been able to FT8 with this antenna but not much luck on SSB until today.
I talked with AE2B in Georgia and a few states to the north of you.
So I thank you for your guidance.
I am running it inside a 3rd story apartment so you cant ask for more than that.
Running 100W on TS-480.
Thanks again.
Brett,
Spanish Fork, UT.
What you get for 5.00
plus shipping:
1.-VARIABLE CAPACITOR:
Translucent enclosure, fully
assembled ready to use High voltage air core variable capacitor. (Aluminum Fins &
stainless steel bolts, nuts and washers
)
2.-RADIANT LOOP:
Qty (1) carefully coiled 38" Diameter 5/8 copper Radiant loop
3.-ACTIVE LOOP:
Qty (1) 7"Diameter 3/4 wide Aluminum plate
4.- Qty (2) Gold plated ¼ inch post connector
5.- PVC Frame:
PVC frame with Qty (10) 3/4 PVC T joint and Aprox. 14 Ft of 3/4 PVC pipe cut in several segments. Qty (10) 6 inch electrical nylon ties.
6.- Instructions:
Assembly and use instructions.
IMPORTANT: Pictures of the MFJ-259C are provided for SWR reading information (Before an automatic antenna tuner matches it to 1:1 swr )only!!. MFJ-259C is not included!!
TERMS:
a. Cash in Advance. We currently accept paypal on Ebay.
b. Estimated shipping is 5 Days after reception of payment.
c. 30 Day return period. We accept returns with 20% re stocking fee plus all shipment is covered by customer.
Returns must be authorized by us. Item must be returned in new un used condition ready to sell.
d. Antenna is custom built. If you need any additional features or only parts please contact us for additional or reduced pricing.
e. We reserve the right to make any modification to improve the design
.
f.User Assumes all responsibility for use of this antenna and fitness of purpose.
g.YOU MUST USE AN AUTOMATIC ANTENNA TUNER NOT INCLUDED!
This antenna is easily serviceable and made from commonly available materials, so that you can enjoy a robust and solid performing antenna that allows Dx to the far places of the world on a minimal footprint, portable, light configuration, discrete form and reasonable power handling.
Currently with 100W PEP , rain or shine, I make contact with HAMS across the USA and other countries in South America and Europe.With the SML-500-1.  QRP is optional.
TUNING PROCESS
The process of tuning the antenna for Dx is straight forward and is as follows:
1.- Turn OFF the auto-tuner and choose the desired frequency on the Transceiver.
2.- Turn on the volume on the transceiver and turn over the capacitor on the antenna and find the spot where maximum noise is heard.
3.- Turn on the auto tuner and proceed to auto tune the antenna. This process usually results in a 1:1 swr or very close to it.
After this tuning process, when you search for other stations to Dx, you do not need to perform auto tune until you are ready to transmit on a chosen frequency. Once the frequency is chosen, you press auto tune and get your SWR down to 1:1 or very close to it. Then transmit. (If the auto tune does not tune satisfactorily after a frequency change, go back to No.1 above and repeat.)
YOU MUST USE AN AUTOMATIC ANTENNA TUNER NOT INCLUDED!
(
LIST OF EQUIPMENT REPORTED USING THE
SML-500-1:
1. Yaesu 857D +MFJ 994B
2.Yaesu 857D with MFJ-939 .
NOT INCLUDED
)
EXPERIMENTATION
This antenna design lends itself to experimental applications if you are so inclined.
For example, you may want to change the diameter of the radiant loop or the diameter of the tube forming the loop. Or the material of the radiant loop.
Also you can also play with the plane of the loop, vertical or by relocating some portions of the PVC, lay it on a table and have a horizontal polarization.
Or maybe you would like to compare the propagation differences between active loop up or down. Which can be made by adding a pvc pipe extension to the top of the front coupling and reconfigure the radiant loop and active loop.
This antenna type, finds a very interesting application as a ready portable antenna, easy to use and store, requires no counterpoise or radials, and allows HF in areas where users are constricted by a number of reasons. RV's, camping, Dxpedition, Apartments, Townhouses, Penthouses, Restricted HOA communities, and emergency communications or situations where fast deployment, and quick pick up are a premium, with not much real state to expand your dipoles, yagis or verticals. NOT that there is anything wrong with those, but the discreet profile of the Magnetic Loop has its charm and applications. Specially one with reasonable power handling characteristics.