0
$\begingroup$

I went to the ARRL's band plan site at https://clatsopauxcomm.org/index.php/technical/arrl-band-plan, and the first table began with the 60-metre band, which starts at 1.8MHz and ends at 2.0MHz. However, the next table shows the 80-metre band, which is 3.5 to 4.0MHz. This doesn't make sense. Shouldn't the wavelengths get shorter as frequencies increase?

$\endgroup$
  • 9
    $\begingroup$ Isn't it just a typo where it's missing a 1 at the start? It should read 160 metres. $\endgroup$ – Buck8pe Feb 5 at 9:56
  • 1
    $\begingroup$ @Buck8pe You should write that as an answer! $\endgroup$ – Kevin Reid AG6YO Feb 5 at 15:05
  • 2
    $\begingroup$ Not the question per se, but note that the site you linked is not the ARRL's; this is: arrl.org/band-plan $\endgroup$ – Kevin Reid AG6YO Feb 5 at 15:06
  • $\begingroup$ I considered making it an answer, but decided on a comment since it reflects the effort I put in! $\endgroup$ – Buck8pe Feb 5 at 15:52
  • 1
    $\begingroup$ @Buck8pe Writing answers even when they're simple prevents questions from being listed as unanswered. $\endgroup$ – Kevin Reid AG6YO Feb 5 at 17:51
8
$\begingroup$

It is simply an error or typo on that website. Take a look at the companion color chart on that page that is provided by the ARRL. It shows that frequency range as 160 meters.

The formula for converting a frequency $f$, in MHz, to wavelength, $\lambda$, in meters is:

$$\lambda=300/f \tag 1$$

It is clear from inspection of the formula that wavelength is inversely related to frequency. So as frequency goes down, the wavelength increases.

$\endgroup$

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.