Amateur Radio Antennas: Sommer T-25 Vertical Antenna

Sommer T-25 Vertical Antenna

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[REVIEWS]

[BACKGROUND]

New! - * Terminated Frequency-Independent Vertical
(160)-80-40-30-20-17-15-12-10 m
Plus all frequencies in between!

"My RX and I have yet to get used to the strong signals," said HB9OI after installing his Sommer T-25 vertical last year. An OT OP, he added that he has decades of previous experiences with verticals.

No traps - no loading coils!
Full legal power - limited only by your terminal resistor
No tuning required
Single 50-ohm coax feedline in any length
Single 50-ohm coax tuning line in any length
Low SWR on all frequencies
Maximum possible efficiency
Rugged mechanical construction
Can easily be erected by one person

* Use an ordinary 50-ohm dummy load as an all-frequency terminal resistor or set your antenna selectively to the desired frequency--right from your shack, using a simple matchbox.

Typical SWR of T-25. Note that the "loss" occurring when using the Terminal-R (terminal resistor) is negligible and will not be noticed on the receiving S-meter.

[Working Principles]
[Parts Supplied]
[Mechanical/Electrical Data]

Sommer Antennas

P.O. Box 710
Geneva, FL 32732
Phone:( 407) 349-9114 | Fax: (407) 349-2485