AmateuRadioMalaysia

Monday, May 16, 2005

Antennas and Such (Not Canai & Such)

Rodney 9W1YJ said...
Dear SWL and Hams,

Re:Cables for your Amateur Radio Setup
======================================

Here is some technical infomation on cables to use when you setup your rig in the car. It the in appropriate cables is use then the performance is degraded... always look for low lost in transmision cable and minimum amp a cable can take to power your rig hungry RF output.


For the Antenna Cables use ...
------------------------------
Manyfacturer: Mitti Cables Mfg Sdn Bhd
Coaxial Cable = RG-58A/U = 50 ohms, Atten(db/100m) 16.1, 100 Meters.

http://www.dse.com.au/cgi-bin/dse.storefront/4286f57e01960bb2273fc0a87f9c0747/Exp
ort/catalogs/DTS0000049

For the DC Power Cable use ...
==============================
Manufacturer: Fajar Cables Sdn Bhd
PVC Auto Cables = Multi Strand = Size :28/.26, 30 Meters. 14.9Amp.
PVC Auto Cables = Multi Strand = Size :35/.26, 30 Meters. 18.6Amp.

http://www.dse.com.au/cgi-bin/dse.filereader?4286f57e01960bb2273fc0a87f9c0747+EN/
catalogs/DTS0000048

Good Luck
73

Rodney
9W2YJ
mailto:9w2yj@amsat.org

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Rodney 9W2YJ said...
Dear All Hams,

Here is a interesting high gain homebrew antenna...

3 stacker x 3/4 wave for 2 meter Vertical antenna

http://yb0ah.tripod.com/homebrew/notes/2m/vhf2m_ant.html

Yours,

Rodney
9W2YJ
mailto:9w2yj@amsat.org

2 Comments:

  • good Job, Rodney
    I am sure some will find this useful...ok guys bring out your friends, Robert Bosch...HI Hi

    9W2MCT

    By Anonymous Anonymous, at 3:52 PM  

  • Dear All,

    Here is a website which you can try to build your own for your 2meter handy walki-talki...

    The FARA 2m Amplifier Project
    An economical, easy-to-build, 25 watt 2 meter amplifier
    By James R. Valdes, WA1GPO

    http://www.falara.org/tektalk/GPOAmp.html


    But wait! You must first look for this Motorola, an MRF1946A (Q1) RF Power Transistor... which is the main component in the Linear Power Amplifier.

    Or as alternative would be Philips BLW60 RF Power Transistor which is used in Midland 73-009 30 watts VHF Booster.

    http://homepage.eircom.net/~yellowbeard/BLW60.htm

    Here is a link with lots of VHF linear Amplifier homebrew...

    http://homepage.eircom.net/~yellowbeard/
    http://www.nrgkitsfm.com/


    73

    Yours,

    Rodney
    9W2YJ

    By Blogger Rodney 9W2YJ, at 9:48 AM  

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