The camera uses a cmos sensor, like the am camera, which work ok with adequate lighting

Calculation program from dk3ba,dh6sbn 10ghz waveguide slot antenna

For atv transmission in the 23cm band from our club station. it consists of a simple 10 elements yagi, completely built in copper

20 turn rhcp helix antenna was acquired from germany helix-23-2 from wimo, the antenna is temporarily mounted at ground level for testin

I experimented with double quad antennas in the 23cm band, and I found that the resulting gain in terms of material expenditure is very large

To try a microstrip patch,this is just a precisely-shaped conductive plate suspended above a ground-plane but by using PCB techniques, this becomes a simple rectangular flat-panel" antenna

Build your own antenna for the 23cm band 1250Mhz - 1280Mc

S51KQ 23/13cm feed for parabolic dish antenna

Antenne per le bande dei 23 e 13 cm

This is probably the most simple and inexpensive antenna you could make for 23cm

For 23 cm 1269 mhz ssb operation on ao-40 a nominal 1500 watts erp of uplink power is requiredg

The mrf9060 is rated at a minimum of 60w cw output at 950mhz and the mrf9045 at 40 watts

First 23 cm Quad Antenna implementation

The following pictures show the stages of cable preparation,elements were cut 2% less than the published length to force downwards beam tilting

Filter for atv and ssb for 100 euro, attenuation on 950mhz 60db, on 1800mhz 80db and on the second harmonic 55db

Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency

This signal generator uses a free-running l-band vco as it's source

The driven element (de) in this design, the driven element is a folded dipole fed via a 4:1 coax balun

The critical dimensions are the case and line, I have had 30 lines cut with a laser cutter to better than 0.1mm tolerances and I am having some boxes milled from brass,all will be silver plated

For the 3 cm band a copper tube is used that normally serves for water supply

A set of waveguide double-slot antennas for 13 cm to 3 cm beacons and an alford slot antenna slotted cylinder antenna

built for gb3km 3.4ghz alford slot

Find a fast solution and started my own design by building countless prototypes and making gain measurements in free space

This antenna is a medium gain directional antenna for mobile portable and base station use

A simple antenna for 23cm to uplink to the local atv repeater pi6atv i thought it would be nice to use this hb9cv design

Build a band-filter for the 23cm band, the following drawing of an nterdigital filter

The feed is a combination of two proven designs, an eia dual-dipole feed for 23 cm

Antenna per la banda ATV dei 1240 MHz la struttura è basata su 3 pannelli disposti a 120° tra loro

Si tratta di una sorta di parabola per la banda 1200 MHz 23 cm e 2400 MHz 13cm

Si può realizzare in due orette, chi ha un pò esperienza

Simulations to find a patch size resonating more or less around 1280 MHz, I then made the patch using self-adhesive copper and a scalpel

Simulations to find a patch size resonating more or less around 1280 MHz, I then made the patch using self-adhesive copper and a scalpel

The 2mtrs section swr is 1.3:1, whereas the two slots are 1.2:1. The shorter 492mm arm should not be in front of the 23cms slot, and should sit just below the slot and not in front, place at 180 degrees to slot if necessary

A detailed photo essay on how he builds his well designed UHF Yagi antennas

I had half a spool of 2mm enamelled copper wire left over from my 12-turn helix, so this was soon bent into shape to make the element

The antenna is lightweight, requires little space and can be easily adjusted in polarization

Antenna per ATV, in 23cm una semplice yagi a 10 elementi

A description of a 9 dBd double quad and its calculations

This antenna is a medium gain directional antenna for mobile-portable and base station use

S51KQ 23/13cm feed for parabolic dish antenna

The doppelquad is a well-tried antenna, new here is only the metallically grounded construction and the calculation for the 23cm band

Antennas Homebrew Yagi Projects represent a quantum leap in

DIY Designs 2 metres 23 cms

The SHF 1296 and 2304 MHz bands are also waking up in our country

23 cm EME stations have excess gain and power levels to communicate with low power stations

Slot antenna consists of a resonant haf-wave slot

Slot antenna consists of a resonant haf-wave slot

Ricetrasmettitore a larga banda per collegamenti packet sulla gamma 23 cm

I tried a prototype with adjustable input taps, and found that the input and output tap positions on the lines were not too important

Use aluminium to construct vhf/uhf antennas, this material is also easy to drill, saw and grind

1296 mhz gtv 23-23m antenna by dg7ybn

Particolare per le comunicazioni di supporto alla amateur television nella banda dei 23 centimetri

The author, a well-known EME expert in this frequency range, describes his design here and gives numerous tips for the replica

35 elements only on a boom of about 3m gives a gain of about 17.8 dBd. Sufficient for me between the ratio of the gain and the length of the boom,supports already built for this kind of application at I0JXX

To produce dimensions for a dl6wu style long yagi antenna, long yagis are commonly used from the 144mhz amateur band to the 2.4ghz band

Directive Systems Engineering VHF, UHF, Microwave Antennas and related products