The easy fix for limited space. Only 7.6m in length this wire antenna with the magic matching unit will work on 40m, 20m, 12m, 10m and 6m with no ATU, plus 15m with the internal ATU found in most modern radios and 80m, 60m, 30m & 17m with an external ATU. This antenna will handle 400W CW or 550W PEP.
If you want a covert antenna then fix it to the downpipe (plastic) from your guttering, or to a convenient tree you could even peg it to the washing line! Of course it could be mounted horizontally as a short wire or fixed in the loft. Going portable? Strap it to a fibre glass fishing pole and lean it against your tent/table or sling one end over a tree. The possibilities are endless. On the air with no added weight to carry - a real plug and play unit.
Also suitable for use on a marine HF setup - no earth needed so can be mounted on a fibreglass or wooden vessel. Will tune on marine HF and MF bands.