In the US and Canada the portion of the band from 3.600–4.000 MHz, regulation permits use of single-sideband voice as well as AM voice; this sub-band is often referred to as "the 75 metre band", in part to distinguish it from the internationally available frequencies below it.

2019年2月5日 · However, the 75m phone band is still part of the 80m allocation overall; neither the FCC, Logbook of the World (LoTW), nor QRZ recognize 75m as being a distinct band; it’s still 80m. Note that 60m is not shown in LoTW; they do not currently recognize 60m contacts for awards although they do record them.

40 Metres, 7.0 – 7.2MHz. As well as its popularity for local QSOs, the 7MHz band is also one of the most reliable DX bands, with DX possibilities at all states of the sunspot cycle and throughout winter and summer. During the day, contacts around Europe are possible, as well as good intra-UK propagation.

2m band = 300 / 2 = 150.000 MHz, whereas the book suggests the frequency band falls between 144.000 - 148.000 MHz. 33cm band = 300 / 0.33m = 909.091 MHz, a long way from the middle of the suggested frequency band of 902.000 - 928.000 MHz

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2022年1月9日 · There’s a band called the 70cm band that refers to 430-440 MHz. Now, you may notice that wavelengths are measured in metric units. That means that a 70cm wavelength is the same as a 0.7m wavelength which is also the same as a 700mm wavelength.

2012年5月29日 · Different frequencies have different wavelengths. So the 70cm band is around 430-440mhz. Re: 23cm, 2m, 7m, 11m.....??? by kurt999 » 08 Jun 2012, 15:01. 300 divided by the frequency in MHz will give you the wavelength. 300/144MHz is roughly 2.

Trang web 7m.cn cung cấp thông tin về bóng đá như tỷ số, kèo, kết quả, lịch thi đấu và bảng xếp hạng của các giải đấu hàng đầu. Với chất lượng dịch vụ đa dạng, 7m là lựa chọn hàng đầu của người yêu thể thao và giải trí trực tuyến.

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2018年9月2日 · Bandwidth is the portion of the spectrum that a given telecommunications system can use. For example, a system that operates on frequencies between 150 and 200 MHz has a bandwidth of 50 megahertz. An important distinction in spectrum technology is the difference between narrowband and broadband.