Friday, December 29, 2006

WCARC 70cm cw Beacon

The West Carleton Amateur Radio Club is building a CW propagation beacon for the 70cm band.

This weekend I am testing the transmitter and have asked local hams for signal reports.

Here are the specs on the setup:

Keyer: ID-O-Matic (built by VA3NFA ;-)
Transmitter: HTX-100 28Mhz IF into a Microwave Modules 432 transverter
Frequency: 432.300 Mhz (maybe a bit lower)
Mode: CW
Power: ~5 watts
Antenna: KU4AB E-Factor horizontal loop at 40' fed by ~70' of LMR400
Beacon Location: FN25bh (APRS Object: 432beacon)

Initial Signal Reports:

VA3KA: FN15wg (16Km): 559: Yaesu FT-736R: 28 elements at 40'
VA3WK: FN15xc (25Km): 519: Yaesu FT-897: 3 elements pointed NE
VE3CVG: FN25hm (45Km): 519: Kenwood TS2000: 19 elements
V01NO/VE3: FN24cw(40Km): 519: FT-736R: 20 elements at 40'
VA3SAX:Fn25bh(3Km): 519: FT857: Loop
VE3HXP: FN25eb(34Km): 519: Echo 70: 15 elements at 100'
VE3AKV: FN15vb(36Km): 559: 12 element K1FO at 8' (sat antenna)

Map:




The ideal CW beacon should have just enough power to be heard by a moderatly sized station within the area, but not so much power that it will cause interference with contest stations.

From initial reports it looks like a 5W beacon on 432 with a good location and a gain antenna (such as the proposed Big Wheel) will work well.

Many thanks for all the signal reports!

Tom
VA3NFA

p.s. Many thanks to VE3CVG for mod'ing the HTX-100 to be used as the I/F!

1 Comments:

Anonymous Anonymous said...

I'm actually running the mobile version. the FT 857D but close enough...the specs on the receiver are the same. good job on getting the beacon up and running. just curious what modifications were required for the HTX 100?

9:40 AM  

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