About the article

Active whip aerial

mini short-wave aerial

Active whip aerial
Short-wave listeners who like to travel a lot have a particular need for an aerial that provides a bit more gain than a standard whip aerial. A second major requirement for a portable aerial is that it ideally should be ascompact as possible. This active whip aerial is only 50 cm long, and it completely meets all the demands placed on an ideal travelling companion.In the January 2000 issue, we already offered short-wave listeners with limited space an alternative to a long-wire aerial, in the form of a simple active loop aerial. This is a very compact aerial, but we fully understand that it is not ideal for use while travelling. You can hardly expect to be able to hammer a few nails into every window frame that you encounter on your journey, just so you can wind a few loops of wire around it. The loop aerial is thus better for stationary use.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1 = 1M?
R2 = 100k?
R3,R5 = 47k?
R4 = 560?
R6 = 56?
C1 = 10pF
C2,C5 = 100nF
C3 = 33pF
C4 = 220nF
T1 = BF961
T2 = J310 or E310 (SMD versions: SST310, PMBF310)
K1 = phono (RCA) socket for board mounting
Enclosure: e.g. Hammond type 1590A (90x38x30mm)
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