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WE HAVE A NEW WEBSITE!

IMPORTANT: Please use our new website to purchase our products. We have kept the old site here for nostalgic reasons and to maintain support of our old products! Below are links to appropriate product categories on our new site!

Accesories can be accessed here:
Transmitter accesories
Dummy loads
Coaxial cable and connectors
Filters
Miscellaneous
Mains power supply units
SWR and POWER meters
Wireless radio links

AM Transmitters (AM MAX)
FM Transmitters (Cyber Max+ and Cyber max micro)
FM kits (MAX PRO 3+, MAX PRO 4)
Antennas for FM radio (GP, dipole, log-periodic, 3/4 wave exterminator)
RDS encoders (RDS MAX 30)
Stereo encoders
Studio equipment
Electronics components (RF transistors, mica capacitors and much more)
Software
Ham stuff
Solar powered transmitters

Also check our new guides here:
How to start
FAQ
Coaxial cable
Audio equipment
Schematics
New schematics
Wizards (formulas for radio)
Amplifiers
Antennas
Power supply


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COMET CFM-95SL

Antena omnidireccional FM de 5/8 de onda

Lo habíais pedido y ya está aquí. Por fin, una antena FM de calidad a un precio razonable. La antena Comet de 5/8 de onda es una antena comercial de calidad profesional que ofrece 3,4 dBi de ganancia. Diseñada teniendo en cuenta las necesidades de una emisora de potencia baja, el modelo CFM-95SL ofrece una calidad y un rendimiento excepcionales a un precio incomparable. Esta antena viene con las características técnicas y la fabricación precisa que nos caracteriza, lo que hace que sea una antena muy recomendada para los transmisores FM de la serie MAX.

Características:

Rango de frecuencia: 88-110 MHz (Ajustable)
Impedancia: 50 ohmios
SWR: 1.5:1 máx

Ganancia: 3.4 dBi

Ancho de banda: 3 MHz

Potencia máxima: 200 vatios

Longitud: 4'8" - 6' 1"

Peso: aprox. 2,5 libras
Conector: SO-239
Velocidad máxima del viento: 134 mph
Diámetro de la antena: ,9-2,25"
Esta antena se envía desde EE.UU.

Antena RPL 0205

 

Para comprar o accesorios consulte Accesorios a la izquierda de esta página.

 


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STACKED DIPOLE ANTENNA

Dipole antenna (single or phased configurations)

Our choice for broadcasts of up to 300 Watts. Weather sealed for long term durability in all climates. DC short for lightning and static protection. Comes supplied with boom arm.
The folded dipole is the perfect antenna for stations that require a truly professional antenna for their broadcasting. No tuning or adjustment is needed for any frequency on the band which makes this antenna the only one to use if you plan to move your transmitters frequency often. Completely hermetically sealed with a full all weather warranty - you can be sure this antenna won't let you down, making it our choice for commercial sites where access is difficult.

For higher power handling you can stack these antennas with the 2 and 4 way phasing harness' to make 2 and 4 bay antenna systems easily handling over 1KW of power.

Technical specifications:
MAX Power handling: 300 Watts for single dipole, 600W for two and 1200 for 4 bay version
Impedance: 50 ohms
Gain: 0dBd (single)
VSWR: better than 1:1.5 (88-108MHz)
Freq. range: 88-108 MHz(no tune)
Connector: N-type Male
Dimensions: 1600mm(height) x 150mm x 35mm
Weight: 2Kg

RPL 0205 aerial

 


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HIGH GAIN 3/4 wave vertical

HIGH GAIN 3/4 wave FM omnidirectional antenna

This is a redesigned standard 3/4 wave antenna to provide even higher gain. Preliminary testing of the antenna indicated a small increase in gain could be seen when the main radiator was made a little longer then the calculated 3/4 wavelength. This adds inductive reactance to the antenna and a few tenths of a db in gain once the gamma match has been retuned to 50 ohms impedance. We knew the increase in gain would be small by making the antenna longer and if we passed the optimal length, we would destroy the antennas performance altogether. We decided it would be worth the time to conduct further field tests and find this ideal length to extract every last bit of performance possible from any single omni directional antenna offered on this band. Using our exclusive formula we can now calculate the ideal length that provides maximum gain based on our customers frequency. High performance 3/4 wave antennas are not typically seen on any band because the 3/4 wave presents some interesting problems when it comes to impedance and angle of radiation. The typical 90 and 45 degree downward radials used on most smaller ground planes are capable of providing a good 50 ohm impedance but they also give a very high angle of radiation when used on the 3/4 wave. This wastes the added gain of the 3/4 wave by allowing a good deal of your signal to go up rather then out. Our innovative cone shaped ground plane structure on the 3/4 wave overcomes this problem and will refocus the energy so that it projects out into the distance and not up into space. A quick look at the picture showing the radiation patterns will make it easy to understand how this affects range when compared to other antennas. Our 3/4 wave has an impressive gain figure better then 6 db over a half wave dipole and more then 9 db over a circularly polarized antenna. The typical 100 watt LPFM station using a circularly polarized antenna has to run the transmitter at about 225 watts output in order to achieve the 100 watt ERP level because the CP antenna has -3.2 dbd. Since our antenna has a power multiplication factor of four times you would only need 25 watts of RF to reach the full 100 watt ERP level! This can provide a significant savings since many exciters produce 25 watts and would not require the expense of an RF power amplifier. The antenna uses a highly efficient Teflon insulated gamma match that eliminates any coils or matching transformers and allows us to shunt feed the 3/4 wave main radiator while keeping it DC grounded for added lightning protection. Another advantage this antenna has is it's ability to handle high power levels. The weakest link in the chain is the coax connector and our standard model offered in this auction uses a gold pin Teflon insulated weatherproof N connector recommended for up to 1 KW. A simple $50 upgrade using a 7/8 connector brings the power handling to 2.5 KW. For commercial operators seeking an excellent backup antenna that can handle full power we offer a special order 10 KW version. This model replaces the gamma match with a sealed Jennings vacuum variable capacitor and uses an EIA flange connector making it virtually impossible to burn out. Your antenna will be precisely tuned for your frequency and shipped assembled so you get a perfect SWR match. You simply slide the telescopic main radiator sections out of the base to the premarked spot, tighten the stainless steel clamps and connect the coax. Complete instructions are included for easy retuning in the field should your transmit frequency make a major change in the future. We have invested lots of research and development time into this antenna and are willing to stand behind it with a great guarantee. If the antenna you use now didn't cost thousands of dollars, replace it with ours. If anything should fail within two years send it back for free repairs or retuning if you would rather us do it. Give your signal some punch and try our antenna at no risk to you. Antena specs are as follows. Approximate height is 9 feet (depends on frequency). Wavelength is 3/4 wave. Gain over half wave dipole is better then 6 dbd. Power handling capacity is 1 KW on the standard model (2.5 KW with $50 upgrade) and 10 KW on the special order high power version. Bandwidth is 5 MHz. wide with a perfect 1:1 SWR at the center tuned frequency. Wind survival is greater then 100 MPH. Wind load is .7 square feet. Weight is 8 pounds. Radiation pattern is low angle omni with vertical polarization. Antenna is DC grounded for excellent lightning protection.

Features:

Frequency range: 88-110MHz (Tunable)
Impedance: 50 ohms
SWR: 1.1:1 max

Gain:
6 db over a half wave dipole, more then 9 db over circularly polarized antenna
Bandwidth: 5MHz, easily tunable
Max. power: 1000 Watts (with modification up to 10KW)
Length:
9 feet
Weight: Approx. 8 pounds
Connector: N
Max. wind speed: > 100 mph
Wind load: .7 square feet
This aerial is shipped from within USA!

3/4 wave high gain vertical omnidirectional antenna

 

Radiation pattern - comparison of various atenna types

 

 

Para comprar o accesorios consulte Accesorios a la izquierda de esta página.

 


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ANTENA DIRECCIONAL DE BANDA ANCHA YAGI

Antena omnidireccional FM de 1/4 de onda

La antena CD95Y FM Yagi de Creative Design ofrece 6 dB de ganancia delantera en un modelo direccional con 20 MHz de ancho de banda. Esto significa que no se necesita ningún tipo de ajuste desde 88-108MHz. La SWR típica es de <1.5:1 a través de la banda. Admite hasta 500 vatios. Puede montarse horizontal o verticalmente. Proporciona un porcentaje delante-detrás de >15dB. Utiliza una conexión a tierra DC para una mayor protección. Está construido con aluminio de alta calidad para soportar mejor las inclemencias del tiempo y viene con una línea de alimentación de trenza RG-8/U con S0-239 y hardware de montaje. Incluye un año de garantía

 

Antena RPL 0205

 

 

Características:


Rango de frecuencia: 88-108 MHz (Banda ancha)
Impedancia: 50 ohmios
SWR 1.5 : 1 máx.
Ancho de banda: 20 MHz
Ganancia delantera: 6 dB (F/B con porcentaje 15)
Potencia máxima: 500 vatios
Longitud : 5'
Ancho (desempaquetada): aprox. 4,5 Kg.
Material de construcción : aluminio estirado
Conector: SO-239
Velocidad máxima del viento: 134 MPH

Para comprar o accesorios consulte Accesorios a la izquierda de esta página.

 

 


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MLB-6600

Antena omnidireccional FM de 1/4 de onda

El modelo MLB-6600 es una antena de un cuarto de onda que se usa en las bandas de 66 a 132 MHz. Proporciona un gran rendimiento para una amplia gama de aplicaciones de recepción en la banda de emisión FM, al tiempo que mantiene una velocidad de potencia de 200 vatios para la transmisión. Viene con un conector PL-259 y un coaxial RG8 de 5,5 metros. Incluye una garantía exclusiva de devolución del importe en 30 días y una garantía de 1 año entero.

 

Antena RPL 0205

 

 

Características:

Rango de frecuencia: 66-131 MHz (Ajustable)
Impedancia: 50 ohmios
SWR 1.5 : 1 máx.
Ancho de banda: 3 MHz
Ganancia nominal : 0 dB (unidad)
Potencia máxima: 200 vatios
Largo 2' - 4'3"
Ancho (desempaquetada): aprox. 700 gramos
Construcción muy limpia
Conector: PL-259
Velocidad máxima del viento: 134 MPH

Para comprar o accesorios consulte Accesorios a la izquierda de esta página.

 

 

 


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RPL 0205

Antena de ancho direccional

Su fabricación precisa, sus excelentes características técnicas y su funcionamiento de ancho de banda sin ajuste, hacen que esta antena direccional sea muy recomendable para todos los transmisores FM MAX. No olvide que se trata de una antena direccional de 6 elementos que emite radiaciones de la mayor parte de la potencia en una dirección, de donde proviene la amplificación.

Antena RPL 0205

Características:

ALTA GANANCIA de 6dB
Funcionamiento sin ajuste del ANCHO DE BANDA
Fácil de montar/desmontar (1/2 hora)
Precio atractivo


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.

 

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