| 4 big monobanders on 1 boom, no traps !!! |
|
OptiBeam
| OB17-4 | 17 Element, 4 Band | |
| Bands | 40 / 20 / 15 / 10 | |
| Gain (dBd) * | 4,8 / 7,3 / 7,8 / 8,0 | |
| Gain (dBi) ** | 11,7 / 14,9 / 15,5 / 15,8 | |
| F/B (dB) | 25 / 20 / 22 / 24 | |
| VSWR | ||
| 40 m allgemeines setting: | ||
| 7,00 – 7,05 – 7,15 | 1,7 – 1,1 – 1,9 | |
| 40 m USA phone setting: | ||
| 7,15 – 7,20 – 7,30 | 1,7 – 1,1 – 1,8 | |
| 14,00 – 14,18 – 14,35 | 1,4 – 1,1 – 1,3 | |
| 21,00 – 21,27 – 21,45 | 1,5 – 1,1 – 1,5 | |
| 28,00 – 28,59 – 29,00 | 1,5 – 1,1 – 1,4 | |
| Elements (number) | 17 | |
| Active Elements | 3 / 4 / 4 / 6 | |
| Max. Elementlength (m) | 14.6 | |
| Boomlength (m) | 11.9 | |
| Turning Radius (m) | 9.15 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 100 | |
| Windload at 130 km/h | 1.989 N / 2,48 m² / 26,8 feet² | |
| Price *** | 3.869,00 EUR |
| * = average gain over dipol in free-space / for comparison: 2 el monobander 4 dbd, 3 el 5-6 dbd | |
| ** = average gain at 20m above ground (= dbd + 2.15 db isotropic + about 5 db ground reflection) | |
| *** = outside EU minus 19% tax – subject to change | |
Here we take a look at the Moonraker Firespot. An MMDVM Digital Hotspot that uses an Orange Pi in replacement for the hard to get hold of, Raspberry P... Read more
Eddy, K6SDW, is trying to find out which SWR meter he sould us. He wants to know which SWR meter should he use to tune the antenna circuit, the built-... Read more
How hard is it to make contacts over the ISS Crossband repeater? Thanks to Robert W5ITR https://www.qrz.com/db/W5ITR for demonstrating his very nice r... Read more
Here we take a look at the ABBREE AR-F8 handheld transceiver. Does this really do 20 Watts? I think we know that answer already..! Read more
SteppIR Antenna This is another video from Pacificon 2022. I will interviewing another vender. John Mertel, WA7IR, for SteppIR. Watch to learn more. Read more
Would you like a wireless mic option for your ICOM radios? Well, there is a way to do it with a Uniden CB mic. And it’s kind of neat! Read more
The Wolf River Sporty Forty is a single band base loaded coil for 40 meter operation using the Wolf River 213 inch, Chameleon CHA SS-17, or MFJ-1979 w... Read more
HF SDR Transceiver 10W Amateur Radio AM FM CW SSB FX-4C Read more
WRTC Organizing Committee is proud to announce a 2023 edition of WRTC 2023 AWARD! This is NOT WRTC 2022 Contest that will be held in Bologna in July 2... Read more
The ACOM 2020S is a state-of-the art 1500 W heavy-duty, solid-state linear amplifier, covering all amateur bands from 1.8 to 54 MHz. It features a Rem... Read more
Recent Posts
Moonraker FIRESPOT MMDVM Hotspot
SWR Meter – Internal Vs External
ISS Crossband Repeater Ham Radio Contacts!
ABBREE AR-F8 6 BAND HANDHELD
Pacificon – SteppIR Antenna
Using A Uniden Wireless Mic For ICOM Radios??
I Love It! Game Changing Wolf River Sporty Forty Coil review
What secrets is it hiding? FX-4C
WRTC 2023 AWARD : January 2023…headset on!
ACOM 2020S | Solid-State 1.8-54 MHz Linear Amplifier
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Foptibeam-ob17-4%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
