COMPACtenna

compact   ANTENNAS

Ham Radio      CB

Scanner – Government

Shortwave       TV/FM Stereo

SMALL  antennas                  SMALL  ground plane
NO  tuning  (of antenna structure)
High Performance
Vehicle
    Often allowing passage into garages, drive-thrus and below overhangs and branches  (7″, 9″ models)
Home
    For HOA’s, condo’s, apartments, homes
    Examples:  attic, enclosed patio, closet, shed
    [See SAR on Installs page]
    [Follow local building codes including NEC grounding/lightning/etc. and NFPA guidelines.]

MADE IN  THE USA
compactenna-on-vehicle
A note of appreciation:
To Radio operators for all your sincere support.
It is often a challenge for inventors to bring forth new ways of thinking/design.
Your word-of-mouth, comments on forums, and reviews help to spread the word about
this unique antenna Science & Technology.
Dr. Jack Nilsson, N8NDL   
Inventor – Antennas, Electromagnetism

Product Listing   follows

Some notables:

Scott Roberts – KB3CBC   eHam.net Reviews of COMPACtenna model 2M/220/440
ARRL Ohio Section Manager  Scott D Yonally, N8SY   20″ COMPACtenna 20 Meters Antenna Review
John, W0RS submitted photos and SWR results of his nicely done COMPACtenna model 2M/220/440 installation:
COMPACtenna 2M-220-440 Photo W0RS Mobile Installation Photo 2 with SWR's

HRO Katie Allen interviews COMPACtenna
DXE talks about HamR-7 Antenna, begins at 46:30
Universal Radio about Dr. Jack Nilsson
Heartland Radio/Antenna-Installation

compactenna-cap-photo.jpg

John KK4SBS writes:
Not sure what sort of … magic wizardry you’ve pulled off here but the performance on the 70cm/1.25m/2m tri-band
COMPACtenna is absolutely phenomenal!
The performance on all three bands, right out of the box, has been nothing short of incredible.
I had been running a B-10NMO (70cm/2m & 12″ tall).
Since switching to the COMPACtenna,
I’m now receiving reports of full quiet on repeaters that I previously struggled to even Rx at ~S5.
I’m now able to Rx those same machines at S8-S9+ with no issues and to my shock,
I’ve also had no trouble on Rx/Tx in the areas I used to struggle.
So thank you for engineering such an awesome product. …
COMPACtenna PHOTO Dodge Charger with 2M-220-440 John Mullen KK4SBS PHOTO 1  COMPACtenna PHOTO Dodge Charger with 2M-220-440 John Mullen KK4SBS PHOTO 2
Thank you John.

Radio Reference
devicelab:  — its performance is very impressive.
 … the SCAN III is able to receive our [850Mhz analog trunk] … while inside the parking garage.
The Laird goes silent almost immediately after entering.
…It sure beats the Laird 1/4 wave UHF 7″ whip (460)

reddit
azbearhuntr: …for its size this thing is incredible.


PRODUCTS

Click on model of interest, or scroll down to view all models and valuable information.

Ham Radio:  Dual, Tri-Band and Multi-Band  Antennas

2 Meters/220/440
2 Meters/440
6 Meters/2 Meters/440
10 Meters/2 Meters/440
20 Meters/2 Meters/440
HamR-7 Series – Multiple HF Bands in Each Antenna

CB  +  Ham Radio    

CB/2 Meters/440

Scanner Radio

SCAN-III   Govt Optimized Antenna

Shortwave Radio

SW
[Global reception videos incl. China, Spain, Nigeria, France, Greece, Iran, Ascension Island – BBC, NUMBERS Stations]

TV + FM Stereo

TV + FM Stereo   “The Only Truly Powerful Living Space TV Antenna”

HamR-7  Series 

Three look-alike models; specific model marked on the bottom for identification
only 46″ tall

HamR-7 :  Optimally Tuned to ‘Phone’ portion of 40m, 20m, 10m  +  6m, 2m, 220 & 440 Bands
                    [Commonly tunable with external tuners to the entire 40 Meter, 20 Meter, and 10 Meter Bands]
HamR-7Digi :  Optimally Tuned to Lower portion of 40m, 20m, 10m  +  6m, 2m, 220 & 440 Bands
HamR-7WARC :  30m, 17m, 12m  +  6m, 2m, 220 & 440 Bands

No assembly required.  Shown here on a 3/8″-24 thread magnet mount:
COMPACtenna HamR-7 Photo Resized and Trimmed

SWR Graphs on Icom-7300 (Internal Tuner) :
[HamR-7 antennas now with Black Caps]
COMPACtenna HamR-7 SERIES Photo with SWR Curves
                   HamR-7                               HamR-7Digi                         HamR-7WARC

COMPACtenna HF Monopole Comparative Analyses Spectrum Analyzer

COMPACtenna HamR-7 Photo in Attic 1 Resized and Trimmed   YouTube: COMPACtenna in attic in Ohio gets a signal report fromGeorgia

5-8-9 Reports on 20 Meters!
HamR-7
Due to HOA restrictions, I was forced to find an alternative to dipoles and beams…
The COMPACtenna HAMR-7 is only 46” tall and requires only a small ground plane
counterpoise (36” x 36”).
This fit within my [very limited space] parameters.
The build quality (materials) of this unit are superb….
After resolving some SWR anomalies (due to defective magnetic mount),
the HamR-7 snapped right into spec on 40, 20, and 10 meters.
I am happy.
The COMPACtenna had me talking to NJ, PA, and LA with 5-8-9 reports.
If you have an HOA or apartment preventing you from enjoying your Ham Hobby,
consider the COMPACtenna series of antennas.
Avi, N1KSP

Available at:
HamR-7 — at Universal Radio
HamR-7 — at Ham Radio Outlet
HamR-7 — at DX Engineering
Heartland Radio   —   eBay affiliate

HamR-7Digi — at Ham Radio Outlet
HamR-7Digi — at DX Engineering

HamR-7WARC — at Ham Radio Outlet
HamR-7WARC — at DX Engineering
– – –
[specification sheets]

Model  SCAN-III

Compact High Performance Scanner Radio Antenna  (100 – 1500 MHz)
Optimized for 3 Wide Frequency Bands:
  • VHF  136 – 174 MHz
  • UHF  378 – 512 MHz
  • 750 – 960 MHz
 Digital & Analog – Superior for Public Service-Safety/Govt Frequency Bands
      Police, Fire, Sheriff, Emergency Medical, State Highway Patrol,
      Homeland Security, U.S. Federal, Military
Also superb for Transmit/Receive on MURS (151-155 MHz) and GMRS (462-467 MHz)
      as well as Ham Radio 2 Meter (VHF) & 440 MHz (UHF) Bands;
      Antenna is constructed in a fashion allowing 100 W at VHF, 75 W at higher frequencies
         Best transmit SWR results are seen with antenna mounted
         at one of the corners of the vehicle roof/hood/lid/fender.
         Performance/pattern is substantially omni-directional when mounted at a corner.
         [As a receiving antenna, model SCAN-III performs excellently at non-corners
         such as roof center, as well as at corners.]
COMPACtenna The Spectrum Monitor May 2019 FRONT PAGE    By Bob Grove, W8JHD    “The prediction of signal flutter reduction was true as well;
when annoying flutter interrupted reception of weak signals on the whip,
reception was much smoother with the COMPACtenna.”

COMPACtenna Flip Chart Graph Drawing - Stabilized Signal Strengths

Increased Reliable Range in the dynamically obstructed NLOS (Non Line Of Sight) Environment we live in.

COMPACtenna SCAN-III Vehicle and Base USES, Photos with Wording

Excerpt from a New Year’s Day 2020 entry on this website
COMPACtenna ‘PRODUCTS & REVIEWS’ page 
[Also posted on eHam.net Reviews of COMPACtenna model 2M/220/440 ]
by ARRL member Scott Roberts – KB3CBC who took the time to study and evaluate his COMPACtenna,
and submit a very well written report:
For one specific case: there is a venerable major manufacturer whose antennas are used by first responders and amateur radio operators (me) for decades. The particular antenna by this manufacturer is used on 2/70 and gave me a benchmark to compare the CompacTenna side by side. In urban, NLOS environments, the CompacTenna beat the 2/70 antenna in every case.
With regards to the magnetic vs electric fields: a fast but inaccurate translation would be to say that this antenna functions as an omnidirectional circularly polarized antenna, and if you didn’t know any better, that’s what you would hear on the radio and see from your reception and transmission reports. It’s a lot more complicated than that and would recommend you review the various YouTube videos Dr. Jack put together to address this topic. Antenna analyzers and plots only give you part of the story, primarily based upon the E-field. It doesn’t show you, directly, what’s happening from the H-field side. Use a spectrum analyzer to compare received signals, though, and you’ll see the difference. The noise floor was reduced by approximately 3db and the signals were more evenly distributed. Signals that were close to the noise floor were observed to have increased by 3-6db, and stronger signals were slightly attenuated. The result is that there was minimal fading and the capability to hear signals that I could not using other manufacturer’s antennas.

6 Minute Video of Tom Medlin of W5KUB.com Interviewing
Dr. Jack Nilsson Regarding 7″ COMPACtenna Model 2M/220/440 :

Testimonial:
Our company “Ham and HiFi” purchased a Compactenna 2M/220/440 antenna from HRO recently!
We use the antenna for testing radios we acquire from ” ham radio collections” we purchase from all over the US !
The construction of our shop / warehouse is with foil backed insulation, steel doors and steel roof
which have made using inside antennas a problem …..
But when using the Compactenna I’m now able to connect to repeaters through out the Reno / Sparks area!
Easy to install, easy to use ( no tuning ), wide banded and will handle 85 watts on 2, 50 watts on 220 / 440 !
Best of all a small footprint and it works !              I ordered another for my truck !
Regards, Don W7SSB
HAMandHiFi.comCOMPACtenna - HAMandHiFi.com LOGO
———————————–

COMPACtenna The Spectrum Monitor May 2019 FRONT PAGE    By Bob Grove, W8JHD    “The prediction of signal flutter reduction was true as well;
when annoying flutter interrupted reception of weak signals on the whip,
reception was much smoother with the COMPACtenna.”

COMPACtenna Flip Chart Graph Drawing - Stabilized Signal Strengths

Increased Reliable Range in the dynamically obstructed NLOS (Non Line Of Sight) Environment we live in.

Available at:
Link to COMPACtenna model 2M/220/440 at Universal Radio
Link to COMPACtenna model 2M/220/440 at Ham Radio Outlet
Link to COMPACtenna model 2M/220/440 at DX Engineering
Avail. at KB Cubed Hamfests
Heartland Radio   —   eBay affiliate
– – –
[specification sheet]

Model  2M/440    Dual-Band

Ham Radio  2-Meter + 440 Bands
COMPACtenna Website 2M-(220-)440 & SCAN-III Vehicle and Base Photos

COMPACtenna Science & Technology – Superior Earth Communications (Land Mobile), Satellite, etc.:

SATELLITE Communication with COMPACtenna Science &Technology
Summary of comments by Brad Smith, KC9UQR:
Brad Smith, KC9UQR
I use the COMPACtenna model 2M/440.
It is elliptically polarized and a very good satellite antenna.
It does work better than a vertical.
I have tried many antennas, including 1/4, 1/2, and 5/8 wave verticals and an eggbeater.
Dr. Nilsson explained the elliptical polarization.
I am very impressed by this little antenna.
The website is COMPACtenna.com .
There is a lot of info there, including videos by Dr. Nilsson that are informing.
The COMPACtenna is also very good at high elevations/working directly overhead. …there is no “doughnut hole”.
The proof is when you get out into the field and make a contact and I am doing that every day.

COMPACtenna The Spectrum Monitor May 2019 FRONT PAGE    By Bob Grove, W8JHD    “The prediction of signal flutter reduction was true as well;
when annoying flutter interrupted reception of weak signals on the whip,
reception was much smoother with the COMPACtenna.”

COMPACtenna Flip Chart Graph Drawing - Stabilized Signal Strengths

Increased Reliable Range in the dynamically obstructed NLOS (Non Line Of Sight) Environment we live in.

Available at:
Link to COMPACtenna model 2M/440 at Universal Radio
Link to COMPACtenna model 2M/440 at Ham Radio Outlet
Link to COMPACtenna model 2M/440 at DX Engineering
Heartland Radio   —   eBay affiliate
– – –
[specification sheet]

Model  6M/2M/440    Tri-Band

Ham Radio   6 Meters  +  2-Meter and 440 Bands
COMPACtenna Website 20in Antenna Attic, Closet and Outdoor Photos

Available at:
Link to COMPACtenna model 6M/2M/440 at Universal Radio
Link to COMPACtenna model 6M/2M/440 at Ham Radio Outlet
Link to COMPACtenna model 6M/2M/440 at DX Engineering
– – –
[specification sheet]

Model  10M/2M/440    Tri-Band

Ham Radio   10 Meters  +  2-Meter and 440 Bands
COMPACtenna Website 20in Antenna Attic, Closet and Outdoor Photos

Available at:
Link to COMPACtenna model 10M/2M/440 at Universal Radio
Link to COMPACtenna model 10M/2M/440 at Ham Radio Outlet
Link to COMPACtenna model 10M/2M/440 at DX Engineering
– – –
[specification sheet]

Model  20M/2M/440    Tri-Band

Ham Radio   20 Meters  +  2-Meter and 440 Bands
COMPACtenna Website 20in Antenna Attic, Closet and Outdoor Photos
W8TWL and KD8ZEI worked numerous stations around the USA and Maritime Provinces of Canada
on the 20 Meter Band at Field Day June, 2018 using the 20″ COMPACtenna model 20M/2M/440 .
Recognition, The Medina 2-Meter Group, W8EOC.org
COMPACtenna Video 20 Meters Field Day Screen Capture    COMPACtenna 20M Field Day Antenna Photo2of2    Link to YouTube 20 second video of W8TWL using the 20 Meters 20″ COMPACtenna

Available at:
Link to COMPACtenna model 20M/2M/440 at Universal Radio
Link to COMPACtenna model 20M/2M/440 at Ham Radio Outlet
Link to COMPACtenna model 20M/2M/440 at DX Engineering
– – –
[specification sheet]

Model  SW    Shortwave Radio

3,000 – 30,000 KHz Receive

COMPACtenna Website 20in Antenna Attic, Closet and Outdoor Photos

Nicely made YouTube Videos by an unsolicited customer using 20″ COMPACtenna model SW on DXpeditions:
Amateur Radio Stations on 20 meters including Barcelona, Spain
K4MIA – Special Call   National POW/MIA Recognition Day
11770 KHz  Voice of NIGERIA        11530 KHz  FRANCE        9420 KHz  Voice of GREECE        9620 KHz  IRB Voice of IRAN
COMPACtenna Video YouTube Model SW - SCREEN SHOT NEW Video with IRAN, FRANCE, etc.    Link to this YouTube Video

Substantially improved reception with COMPACtenna
A  number of stations including Australia and Cuban NUMBERS STATION
Thanks again to ‘radelva65’ on YouTube for his informative and entertaining DXpeditions.
COMPACtenna Video YouTube Model SW - SCREEN SHOT    LINK to this YouTube Video

Stations from around the world heard at The Donald J. Trump State Park:
COMPACtenna Video YouTube Model SW - SCREEN SHOT - CHINA heard from Donald J. TRUMP State Park    LINK to this YouTube Video

COMPACtenna Video Nashville SW Radio Screen Capture   Link to 10 second YouTube video of Nashville, Tennessee 13845KHz with short COMPACtenna heard well in Cleveland, Ohio
Link to 20 second YouTube video of COMPACtenna 7505 KHz China International Radio Broadcast from the Mediterranean heard well in Cleveland, Ohio

COMPACtenna The Spectrum Monitor May 2019 FRONT PAGE    By Chris Parris    ” … The COMPACtenna … seemed too good to be true.
The antenna appears to be very well built and not flimsy.
The COMPACtenna SW does indeed work as advertised.
It appears to be useful in situations where a larger or longer antenna is not practical or possible.
I did receive shortwave stations better than the standard whip antenna provided on basic shortwave radios.”

Available at:
Link to COMPACtenna model SW at Universal Radio
Link to COMPACtenna model SW at Ham Radio Outlet
Link to COMPACtenna model SW at DX Engineering
Heartland Radio   —   eBay affiliate
– – –
[specification sheet]

Model  CB/2M/440    Tri-Band

Citizens Band Radio (CB)   +   Ham Radio  2-Meter and 440 Bands
COMPACtenna Website 20in Antenna Attic, Closet and Outdoor Photos

Available at:
COMPACtenna CB/2M/440 at Universal Radio
COMPACtenna CB/2M/440 at Ham Radio Outlet
COMPACtenna CB/2M/440 at DX Engineering
Heartland Radio   —   eBay affiliate
– – –
[specification sheet]

Model  TV + FM Stereo

A Truly High Performing Living Space – Indoor TV/FM Stereo Antenna
COMPACtenna TV+FM Stereo Antenna Photo - On Shelf Behind Picture  COMPACtenna TV+FM Stereo Antenna Photo - On Shelf
Here the antenna is behind the picture on the top shelf of an entertainment center between bookshelf speakers.
The unique COMPACtenna TV antenna is a 3-Dimensional Design
and contained within an attractive plastic black box.

Available at:
Heartland Radio & TV  (440-946-3757)
– – –
[specification sheet]