Mauro Ottaviani
RF Microwave devices
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RX/TX 10 GHz Booster for ICOM IC-905


The RX/TX Booster includes a Power Amplifier, Low Noise Preamplifier, input circulator, and output low-loss microwave relay, offering enhanced signal performance and optimal input matching.




Key Features:


  •  Easy Installation: Plug & Play setup—just provide +13.8V DC at 3A.
  • Compact Design: can be mounted directly on the same pole behind the CX-10G, saving space..
  •  SEND Signal: Directly derived from the ACC connector.
  •  Power Output: > 4 Watts.
  •  RX Gain: > 12 dB.
  •  RX Noise Figure (NF): <1.5 dB.
  •  Enclosure: Durable metal shielded box with IP65 rating.
  •  Connectors: Thru ACC connectors, the same model as the CX-10G. RF in/out via SMA (N connector available on request).
  •  Custom Power Outputs: Available upon request.
  • Suitable for use with any 10 GHz transverter via the PTT connector.




Installation Instructions:


  •  Disconnect the 10-pin ACC connector from the CX-10G and attach it to the RX/TX Booster SMA input.
  •  Use the supplied 10-pin cable to connect the booster to the CX-10G.
  •  Connect the included SMA/SMA cable between the CX-10G and the booster.
  •  Connect your original SMA antenna cable to the ANT SMA port on the booster.
  •  Finally, connect the 13,8 Volt power supply to the booster



Dimensions and Weight:


   120 x 120 x 100 mm, 1250 g (4.7’ x 4.7’ x 3.9’ in, 2.75 lb) excluding pole support

The 10Ghz booster is gold

Thank you, Mauro your booster makes the IC-905 really competitive! Also, the weekend was my first weekend ever on 10 GHZ and my first contact ever was FM27HV to FN41ee 488 KM! I worked the three hams there W1GHZ, K1RZ, K3WHC on CW and SSB. Of course, propagation was perfect as they were 20 over 9 Congratulations!

Don Snider

N3MK

Chincoteague Island,VA

I believe this is a GREAT device! 

Hi Mauro I love the booster, and have provided very positive reviews to 4 hams who have asked me about it. Last weekend I went mountain topping for the 10 ghz contest. This is the best piece of ham equipment I have! Keep up the great work.

Larry N1ROZ

Belchertown, Massachusetts

Mauro's amplifier is excellent, it does exactly what it should, every time I use it. The Booster is a reliable turn key solution for real 10Ghz power with the IC-905/CX-10G. With a pass thru ACC connector it's easy to wire into your system and it's easy get on the air right away with the booster. It's also easy to add LEDs and a voltmeter for additional information from the amp if you so desire. Running the IC-905/CX-10G/AH-109PB and booster it's easy to work rain scatter and you have enough TX power and enough RX gain that aiming in contests and other settings is not quite as important as it would be without the booster, and this is very helpful for the new 10Ghz contestor such as myself. Icom's AH-109PB is rated for 10w, its a shame to just power it with the CX-10G at .5 watt.

Tom, N2YTF

IZ1OTT

IZ1OTT

 ing. Mauro Ottaviani

Licensed radio amateur since 1981 with the call IW1ASJ.
Graduated in Telecommunication Engineering at Politecnico of Torino.
After several working experiences employed for 27 years at La Stampa newspaper as a telecommunications manager, then retired in 2015.
From the early ‘80, I was devoted to homemade and microwaves.
In 1985 this enthusiasm led me, together with my friend Michele I1TEX, to import and build twenty OE9PMJ 23 cm transverter kits opening the way to many OM to this entry-level microwave band.
At the end of the ’80s, I designed and assembled many pieces of a compact 23 cm water-cooled power amp using a pair of 2C39/7289 tubes and subsequently the similar 13 cm version using a single tube (published on Radio Rivista 1/1990 and 1/1991). Following this, various articles were published: DB3UU 13 cm transverter, 10 GHz preamplifiers and transceivers modifications.
Collaborating with some local companies operating in the RF sector I have created a series of Noise Sources that can be used with any Noise Figure meter.
After 2000 the callsign changed to IZ1OTT, and I got the US general license (KD2QAQ).
I improved my RF lab by adding more instruments and began working extensively on the higher microwave bands (10 and 24 GHz).
With my dear friend Dino - IV3FDO (SK), I built an automated system to verify and characterize the noise source (published on Dubus 2/2014) from 10 MHz to 26.5 GHz, now referred to absolute hot/cold standards such as liquid Nitrogen. For this purpose, Davide I1DDS (SK) wrote the code running under Windows OS.
I combine occasional activity on frequencies from 144 MHz to 76 GHz, and even on 10 meters, with the build of transverters, preamplifiers, PAs, and Noise Sources. My friend Marcello IK1YWB, a passionate and knowledgeable radio amateur, is valuable support in all my building activities. I live and work on the Turin hills in Moncalieri (TO). 

Special thanks to Franco Rota I2FHW who encouraged me to continue my self-building activity by providing me with useful microwave components from his inventory of the former RF Company of Rota, now RF Microwave.
A special thanks also to Alberto IU1KVL, who built and maintains this website.

Preamplifiers

QPre 10 GHz

Single stage NE32584a

10 GHz preamplifier Single stage NE32584a

Noise Source & Calibration

Noise Source

  • Compatibility: Designed for any noise figure meter with a 28-volt power supply noise source drive
  • Calibration: Includes a calibration chart on frequencies 10 MHz, 100 MHz and 1 GHz steps up to 12 GHz (custom frequency steps available upon request).
  • Performance: Return loss (RL) better than -25 dB.
  • Connector: SMA RF output and BNC 28 V input


Additional Services: Calibration available for both custom-built and branded noise sources, up to 26.5 GHz.


RF Microwave devices

Pubblications

DUBUS

Some articles from DUBUS magazine

by Dino Fachin, IV3FDO and Mauro Ottaviani, IZ1OTT - February 2014 

by Mauro Ottaviani, IZ1OTT - January 2025

by Mauro Ottaviani, IZ1OTT - April 2025

Mods

Events

Marzaglia 10/11 Maggio 2024

Due giorni del microondista

20-21 aprile 2024 - Verona

Organizzatori: Roberto IK3TCH - Carlo I4CVC

Contacts

mauro@mauroottaviani.com

 ~ This site is under construction ~