Hidden feature: Adjusting the Tecsun PL-880 FM de-emphasis

Photo source: Tecsun PL-880 Yahoo Group

Photo source: Tecsun PL-880 Yahoo Group

There has been some confusion (mainly on my part) about the hidden feature behind button number 5.

Pressing and holding the number 5 will toggle the radio between 50 and 75 uS.

But what, exactly, is this function?

Thankfully, Eric Cottrell has the answer:

“The 50/75 uS setting is the FM De-emphasis. 75 uS in the US and 50 uS in Europe.”

Eric then pointed to a discussion about de-emphasis on DIY Audio’s website.

Many thanks, Eric, for clarifying this (and thanks to others SWLing Post readers who pointed this out in comments as well).

You can follow all Tecsun PL-880 updates by bookmarking/checking this link.

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4 Responses to Hidden feature: Adjusting the Tecsun PL-880 FM de-emphasis

  1. Pingback: A review of the Tecsun PL-880 portable shortwave radio | The SWLing Post

  2. PJMM says:

    A couple of days ago I received my TECSUN PL880 from Anon-co with the latest firmware loaded. Also I own two other TECSUN receivers PL398MP and PL390. Comparing side by side the PL880 FM sensitivity with this two other receivers, I have found the PL39x receivers seems to display always higher levels of signal than the PL880. That surprises me a little.

  3. GB says:

    I wouldn’t place too much importance on that. They are, after all, cheap portable radios, not more expensive amateur or professional equipment. It’s how well you can hear that counts, even if you do have a professional quality signal strength meter.

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