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Reviews Categories | Antennas: HF: Verticals; Wire; Loop | Mosley Trap Master V-4-6 Help

Reviews Summary for Mosley Trap Master V-4-6
Mosley Trap Master V-4-6 Reviews: 1 Average rating: 5.0/5 MSRP: $27.95 in 1962
Description: 40/20/15/10m vertical antenna rated at 1kW. 22' long- 3
coils inside 2 in-line cylinders. Radials required.
Product is not in production.
More info: http://
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KK6QMS Rating: 5/5 Sep 25, 2017 03:39 Send this review to a friend
simple design- solid performer  Time owned: 6 to 12 months
Antenna was a gift rescued from behind a friend's garage. Contacting Mosley revealed it was produced in 1950s through early to mid 1960s!

It is clean and simple- no appendages at all.

Mine is on a flat roof at ~15' with 8 radials (2 per band 180deg apart). I started with 10m, tuned radials, then 15/20/40m consecutively. In the end I think I did add some length back to a few radials but I was able to achieve 1:1 on 15/20m and VERY close to 1:1 on 40/10m. Very easy to move the sweet spot up or down the bands by trimming/lengthening the radial pairs.

The 1.5:1 or less SWR bandwidth is as follows:
10m - 1MHz
15m - 400kHz
20m - 190kHz
40m - 180kHz

Later I got the manual from Mosley (great support from them!) and it states 4 radials minimum at 33' each- more can be added. My radials are all lengths related to the 4 bands- no idea how all radials at 33' would work.

The antenna is sturdy- has a nice ring with 3 thimbles for guy lines- and performs great. I love having a 60 year old antenna that still works great!!

I have some pics on my site of my install and tuning results:

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