Mosley TA-33-Jr
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| Frequency | 20m: 14.0-14.35 MHz, 15m: 21.0-21.45 MHz, 10m: 28.0-29.7 MHz |
| Bands | 20m, 15m, 10m |
| Type | HF Yagi |
| Gain | 6.5 dBi |
| Polarization | horizontal |
| Modes | SSB, CW, AM, FM, digital |
| Length | 370 cm |
| Weight | 9.5 kg (20.9 lb) |
| Connector | SO-239 |
| Mount | mast/tower |
| Year | 1965 |
| feedpoint | SO-239 |
A lighter, shorter-boom tribander than the Cushcraft A3S. 3 elements on a 12-foot boom for 10/15/20m, in production since the 1960s. Less wind loading and weight make it easier on a modest mast or rotator.
Slightly less gain than larger tribanders. Trapped elements have some loss. Mosley's published gain figures run optimistic.
A lightweight tri-band Yagi. The TA-33-Jr trades the last decibel of gain for lower wind loading and weight, which makes it practical for operators with a modest tower or mast.
The Mosley TA-33-JR is a lightweight three-element tri-band HF Yagi beam for the 20, 15, and 10-meter bands, the 'junior' version of Mosley's full-size TA-33, scaled down in weight and wind load so a modest tower and rotator can carry it. On a boom of about 12 feet it gives the directional gain and front-to-back rejection of a real beam, the key advantage that lets you point your signal and quiet the bands behind you.
Mosley has built these tri-banders in St. Louis for decades, and they are known for solid, no-nonsense construction. The Junior trades the full-power handling of the bigger models for lighter weight (it is typically rated around 500 watts), making it a sensible first beam or a good choice for a station where a heavy antenna is not practical. Some versions add the WARC bands for five-band coverage.
It is a current product. The full-size, higher-power Mosley Classic 33 is the step up, and the Hy-Gain TH-3JR is a comparable compact tribander from another classic maker.