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Reviews For: Sigma Euro-Comm LW40

Category: Antennas: HF: Verticals; Wire; Loop

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Review Summary For : Sigma Euro-Comm LW40
	Reviews: 2	MSRP: 70.96
	Description: 40m long wire with 9:1 UNUN
	Product is in production
More Info: http://https://sigmaeurocomm.co.uk/product/sigma-euro-comm-lw40-hf-160-6m-multiband-long-wire-top-band-antenna-aerial/
# last 180 days	Avg. Rating last 180 days	Total reviews	Avg. overall rating
0	0	2	4.5

DD6VD	Rating:	2020-07-09
Unmelted at 100 watts			Time Owned: 0 to 3 months.
I bought the antenna for my Icom IC-7300 with a maximum power of 100 watts. The antenna should withstand 400Watt CW / 500Watt SSB. I did the antenna on 80m with 100Watt FT8 and I melted the Unun. I was lucky that I had the meter display on the IC-7300 and could see the SWR otherwise worse things would have happened. I then wrote to the company that came with such statements "Hello there. Data modes such as FT-8 are a constant carrier so they are always on power, a 100 watts of FT-8 is similar to 800 watts of CW or SSB CW & SSB are intermittent so although the unun can take 400 to 500 watts on CW & SSB it will only handle around 25 to 50 watts Anymore and it will melt the unun which is what has happened to yours. Regards Paul. " This is of course not true and an excuse, the antenna is said to endure 500Watt SSB, an FT8 signal sends 12-15 seconds, the whole 4-5x and the QSO is finished. There can be no question of a permanent transmission. Instead of sending me an exchange Unun, I could have bought the Unun for £ 30 plus shipping. Goodwill to the customer and the goal of satisfying the customer looks different. I can of course NOT RECOMMEND the antenna. Addendum 09.07.2020: The whole thing did not leave me alone and I had to find out that you never stop learning and keep learning. In fact, with baluns and sheath wave barriers with FT8, you have to divide by 5. That means if I have a balun that can withstand 2KW, I can give up a maximum of 400 watts in FT8. As a result my 100Watt on the Unun the 400Watt SSB fails too much and the blame is to be found with me. That means on the balun that I now have that is designed for 150 watts, I can not give up more than 30 watts in FT8. In any case you should always have the meter display active with the IC-7300 if you make FT8. A note from the manufacturer would be nice.

GW0JLX	Rating:	2019-02-12
Just Excellent			Time Owned: more than 12 months.
For a long wire, first trialled by myself in Oman with my A45WY call and stretched out from the top of my 3-story house to the ground as a sloper, I made many QSO's all around the globe on 20m, 17m and 15m mostly. Very very impressed with this antenna. Even constant exposure to the high UV content it worked flawlessly. Have just purchased its replacement for the new QTH in Wales. Superb bit of kit.

Category:

Antennas: HF: Verticals; Wire; Loop

Product:

Sigma Euro-Comm LW40

Summary:

Rating:	Time Owned:
Great! Good OK Needs Help Poor Awful!	0 - 3 Months 3 - 6 Months 6 - 12 Months More than 12 Months

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