23cm quad antenna. All will be silver plated. Technical description The SHF Yagis The 23 and 13 cm bands belong to the UHF bands with the highest frequencies and offer very unique and fascinating propagation conditions. 29 Photo Credit: Dubus Magazine 2/2021, front page Building of a 23 cm Yagi with elements insulated through the Jun 26, 2024 · 23CM Quad Antenna My first 23 cm Quad Antenna implementation 23cm interdigital filters Filter for atv and ssb for 100 euro, attenuation on 950mhz 60db, on 1800mhz 80db and on the second harmonic 55db 23cm Signal Generator This signal generator uses a free-running L-band VCO as it's source Explore a wide range of our 23cm Antenna selection. You can see a couple of photos of my variation nearby. But I wasn't thinking of a compact "mobile" version, so I decided to start with a double bi-quad design. As I wanted to listen to SSB and Amateur Television stations. Oct 5, 2024 · Antenna 23cm 1. This is probably the most simple and inexpensive antenna you could make for 23cm. Wideband operation 1290 - 1310 MHz. I used about 10 feet of coax, no need for more and it’s nice to keep the losses down. He’s provided solid directions and images along with excellent insight into how it works. 5 at resonant frequency Boost your signal with our selection of VHF/UHF beam antennas! We offer a huge selection of Yagi antennas, including cross-polarized and circularly polarized, from top brands like M2 Antennas, Cushcraft, MFJ, and Diamond Antenna. I figure two antenna options are better than one, plus phasing two in a stack would make for an interesting option! CUBICAL QUAD ANTENNA CALCULATORC= Spreader arm Length Reflector tuning stub Performance Data and Geometry Pattern and VSWR Download as File YBN 23-9m Yagi with straight Driven Element A short and easy to build 23 cm Yagi that provides a clean pattern and almost 14 dBi of gain. Jul 15, 2015 · With the 23cm transceiver still in development, I need a 23cm antenna. Free Shipping - Diamond Antenna Quad-Band HT Antennas with qualifying orders of $99. The critical dimensions are the case and line, I have had 30 lines cut with a laser cutter to better than 0. Shop now for fast shipping and easy returns! Oct 10, 2025 · quad antenna, how to build a quad antenna for ham radio use, a curation of 95 useful links about Quad Apr 14, 2023 · First attempt to build a 23cm Yagi I had been looking for an antenna for 23 and 13cm for a while now. This is the scaled version of the 2 m band YBN 2-9m. Here, antennas with high gain are essential to achieve good results in contests or DX. 23cm antenna. Feb 15, 2017 · Or you can build antennas like the Quadruple Quad or a Double Quad (Bowtie) antenna. Broad bandwith makes this antenna the optimal choice for ATV ( television ) 2,4Ghz - 13cm band quadrible Quad with reflector 14dbd gain Double Quad antenna for 23cm band 1,2Ghz homemade Apr 3, 2024 · Antenna 23cm 1. In the previous Winter I built a HB9CV-in-a-box for 23cm for my uplink to the local ATV repeater PI6ATV. Although this antenna works nicely, its gain just isn’t enough when their 23cm preamp is broken (which, unfortunately, is the case most of the time). 2 GHz Links → 60 Jednoducha antena pro pasmo 1296 MHz The SHF 1296 and 2304 MHz bands are also waking up in our country Low-Cost Horn Antennas for 23-cm EME 23 cm EME stations have excess gain and power levels to communicate with low power stations Long slot antenna 23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1. They are made using the excellent Linrad software running from the TS2000 radio's Intermediate Frequency through a Funcube Dongle SDR. These can be made out of twin&earth heavy cable and PCB materials easily using hand tools whereas making a Yagi is harder due to needing precision in drilling and cutting. Listed under the Antennas/23cm category that is about Antennas for 23cm band. Jun 28, 2017 · I have decided to build two 23 cm (1296 MHz) 12 element Yagi antennas (DL6WU format) one with ‘handle’ space behind the reflector and the second to mount on a camera tripod. I got interested in a double quad for 23cm. Find top brands, exclusive offers, and unbeatable prices on eBay. The quad antenna has more gain, is very quiet on Rx and works great for DX. The average gain is about +12 dbd. I'd often heard John MW1FGQ extolling the virtues of his bi-quad antennas, but when he sent me this picture of his latest "mobile" version, I decided that I really must try one for myself. The Bi-Quad is also known as a double-quad antenna. My initial measurements are summarised below. Radio old Museum | Practice with the soldering | SWL Shortwave DX Radio | Microwave | EME Ham Radio Satellite | Propagation Solar Cycle | Grid Software | Propagation prediction | Qrp low power | Telegraph Morse code | Antennas Satellite | About Rtty mode | Beacon | Band Plan Ham Radio | DX cluster software | PSK31 software | Radio portal Tuto anténu jsme vyvinuli za přispění OK1ANQ již v roce 1996. 2004 A Double Quad Antenna for 1296 MHz This antenna is a medium gain directional antenna for mobile (portable) and base station use. Due to the relatively short wavelength, the demands on precision in antenna construction are significantly higher than, for example, on May 19, 2021 · Build your own quad antenna for CB or the ham bands. Whilst I haven’t modelled the Bi-Quad against my 6el yagi, I understand the Bi-Quad gain is around 9 dB with a 60 degree beam width, happy to be corrected. Shop Handheld and Scanner Antennas at DX Engineering. 03. Jan 1, 2015 · My 23cm yagi antenna, in fixed position to the local ATV repeater. For these prices I can build several antennas myself And so it happened! I had found a handy tool from my Australian counterpart VK5DJ A nice software calculation construction of a 23 cm band 1296 mhz bi quad antenna. 5 at resonant frequency In Summer 2009, the Bolton Wireless Club acquired an old Microwave Modules transverter and I donated a loop-quad antenna for Club use, so that more of our members can try out the band for themselves. This is probably the most simple and inexpensive antenna you could make for 23cm. Advantage of a double quad for 23cm over other designs is a great front/back-ratio and a large opening angle. Aug 3, 2005 · I had been inspired to try ATV (amateur TV) on 23-cm and built this antenna to feed an old 10-foot C-band satellite dish I had. Now holds the current VK National record on 1296 at 2458 km. Finally don’t skimp on the cable to connect your antenna. . Now I had found some factory antennas online. Účelem bylo vyvinout anténu, která by se dala používat na pracovišti 23 cm během závodů v případě, že by byla upevněna na stejném stožáru jako 70 cm. Only the price. I will use the 23cm transceiver mainly for chatting on a local repeater PI6NOS. hmmm. Apr 23, 2019 · There's ideas in the top-selling Hand-carried QRP antennas. Super high gain 23cm Low Noise Competition Antenna 23cm36DXP. We take great pride in building a quality product that will give years of good service and performance. May 3, 2004 · Last update 05. It has about 9 dbi gain, a 60 degree beam width with a clean pattern, and f/b ratio > 25 db. If there is a defect in materials or workmanship within 90 days of purchase, Directive Systems will repair or replace, free of charge, the defective part to the original purchaser Build your own antenna for the 23cm band ( 1250Mhz - 1280Mc ) using some aluminium and the following simple design. 12. I have built it many years ago for mobile operation to check out how good the signal of the ATV Relais DB0SCS is received in the villages around Schwabach (the QTH of the Relais). Dec 27, 2017 · 23cm Bi-Quad Antenna This post demonstrates the method to constructing a 23cm Bi-Quad antenna which I plan to use for SOTA activations. Jul 20, 2025 · Antenna projects for 23 cm band 1200 MHz, a curation of 20 useful links about 23cm Jan 12, 2017 · I selected W6PQL’s information on a 23 cm double quad. Best of the best Yagi antennas for DXing, EME, and contest work. New here is only the metallically grounded construction and the calculation for the 23cm band Homebrew yagis Antennas Homebrew Yagi Projects represent a quantum leap in Yagi Calculator by John Drew To produce dimensions for a DL6WU style long Yagi antenna, long yagis are commonly used from the By measuring (or calculating) antenna gain, receiver noise figure, LNA noise figure it is possible to estimate System temperature, dish spillover, or dish efficiency. The design is based on plans for a WiFi biquad that I found on the Internet: Biquad Antenna Construction I scaled these dimensions for my frequency and made Directive Systems Warranty Policy All Directive Systems antennas are built with the finest materials available. Design date of issue: 2020. Available in ebook or paperback it's been favourably reviewed by hams all around the world. 2 GHz Links → 60 Doppelquad antenna for 23CM The Doppelquad is a well-tried antenna. 1mm tolerances and I am having some boxes milled from brass. Ultimate-designed antennas calculated using full 3D EM Simulation Software. fa5p czbv 5on cq za ohueuf cvhr17i xvfh zg ybtx