Would I fry a boom box radio if I put a tv antenna on it?

Would it fry the radio if I attached an old tv antenna to a radio? I have already attached a loooong antenna to it, but I need more more more!

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tech-king9 years ago
if you plan to put the antenna ouside/on a roof, install a fast blow fuse (not sure exact value) to protect against lightning.
Believe me, a direct strike, one that has already traveled about a mile or so, can jump a fuse it need be :-)
they could, but a fast blow fuse is a good precaution. especially if the antenna is nocked into power lines by the wind ...
Oh, I agree, I am not suggesting NOT including them as they would stop most "surges" for sure, and is great for those. But, in the unlikely event of a direct hit...well you might as well start looking at catalog's in search of replacement equipment...unless you can afford decent lightning arresters or possibly lightning rods one's antenna can still "charge" in the proper circumstance and become lethal. Good grounding practice helps here too.

Lightning rods, set up properly, are great, because they are literally there to dissipate the buildup of a charge potential, not necessarily to redirect a direct strike.
ive also heard of people using isolation transformers to protect their stuff. another good idea, especially for hams, it to set your equipement up so that the antenna has a relay. when the equipement is enegised, the relay closes and the antenna is connected. when the radio is off, the antenna is no longer connected to the radio. instead, it goes to a ground.
ARRL & QST both have a lot of information on Lightning protection, especially for the HAM. (ah the good ole days, when I fooled around with a little 5 watter LOL).
great link. a bit off topic, but i also need some radio help im working on a radio project, and need some help. im planning on putting a fuse between the antenna, and the delicate fet first stage of the radio. im wondering what value fuse i should use ( i know it needs to be quick blow). the radio is meant to operate on the am band, if its any help. any idea what value?
Fuses blow because of over-amperage, if I remember correctly. And you already know what can happen to a voltage sensitive device if the voltage spikes and the amperage does not.

Better would be a voltage sensitive configuration for voltage spikes, if that is what you are trying to protect against: One option, but if you are looking for something to break rather then just limit the voltage

But hopefully, this will shed some light on the issues at hand...be forewarned, this is a pdf file

OR you may find something in here to suit you :-)
Lithium Rain (author)  tech-king9 years ago
I'm just gonna take it outside every now and then...I'm not gonna leave it outside or listen in the rain. But thanks.
NachoMahma9 years ago
. It will not hurt your radio - unless it gets hit by lightning or falls into a power line. . Re receiving radio from Africa: FM, no way. AM broadcast band, maybe, if you're real lucky, but it will be a hit-and-miss affair (atmospheric conditions have to be just right) and you will need a directional antenna. SW, very possible.
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