Instruction: Answer the given question using the supporting document.

Input:
Question: the extra antenna. does it require the removal of the old antenna or does it slide into its own mounting hole? what about the roll up model?
Document: I bought this Techsun PL-606 to replace an old Eton radio. My choice was between the PL-606 and the PL-380. I went with this model - chosen by flipping a coin.I have been a shortwave listener since 1964. It's fascinating to me that radio signals can travel around the globe and I hear programs from countries I may never visit. The PL-606 is, by far, one of the best-designed portables I own.
Great radio for traveling through the US or overseas. So small and functional, the extra antenna provides better reception. This is a great buy!
In non-scientific, side by side reception comparisons...they're the same.Don't believe those inaccurate dimensions Amazon provides, the 606 is only 4 1/2" wide and 3 3/4" high.The addition of the "extra whip antenna" is a good idea, and makes a difference with hard to get FM stations, or if you're like me and work in a concrete tomb where the signals can't penetrate too well.What I dislike, is the digital volume control.
This radio is what I was looking for. We just move into a green building at work and we can not have any electric devices at our desk and I'm away from the windows. With the extra anteana extension and battery operated I receive all the stations I love.
Not much money for a quality radio with good am reception, average sound, good tuning and loaded with features. Better than a radio shack model for twice the money. Be prepared to download a manual in english from the net.
I bought this Tecsun to replace my old radio.I was surprisedby the size I thought it would be bigger.I found out biggeris not always mean better.I love the fitures ETM it is easy toset up and work with the sound is great .I mean you can't reallyask for more .I love my PL-606 I feel I got my moneys worth.
My boyfriend wanted someting to listen to baseball games from our remote farm, and a friend reccomended Tecsun. We're very satisfied with the sound quality and it's ability to pick up stations. However, he is having a very hard time mastering the controls.The radio user's manual came all in Chinese? I downloaded an English manual off the internet. He's also called our friend who has another model Tecsun. Still, the radio shuts off every half hour, and he has to turn it back on.
This little radio so far has been great! It can pick up stations my last Radio Shack radios could only 'dream' about, and has all the features an radio-phile could want or need for $50.However, the dimensions listed: (7.4 x 1.1 x 3.2 inches) is incorrect. I measure 5 x .9 x 3.2 inches. For a moment I thought they sent me a different model, but no, it's the PL-606.
You have to do a lot of wheel turning to get where you want to go. Assuming that you want to find that elusive shortwave station (as opposed to listen to your local PBS station 24/7) all of that tuning with a little thumbwheel will get old very fast.You'd be much better off paying $32 less and getting an identically performing radio from the same manufacturer that DOES have direct frequency entry:TECSUN PL-380 DSP FM stereo. MW. SW. LW.
If I am several feet away then the radio is 100% dependent upon its external antenna and it is not good enough.
Answer: This is an Awesome radio I love it easy to program and very portableThe antenna slides right over the one on the radio at least that's how I use it