Copper Talk » Ask The Tech » General Technical Questions » IMPORTANT INFO FOR USERS OF MFJ ANTENNA ANALYSERS « Previous Next »

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Tech858
Moderator
Username: Tech858

Post Number: 39
Registered: 10-2007


Posted on Sunday, November 11, 2007 - 5:32 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

This is a very important issue when checking\tuning your antenna using a MFJ antenna analyser , DO NOT rely on it being accurate if you are using the internal battery as believe it or not even a drop of 1 volt can make a significant difference to the readings so it is better to use a regulated supply as even a car battery can drop enough in a short while especially if it is an old one .
Tech858/Jim
MM0TXO
CEF#858
HAM#230
CVC#116

Wavin' a hand at ya' fae Scotland

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Kiwikid
Intermediate Member
Username: Kiwikid

Post Number: 186
Registered: 1-2003


Posted on Wednesday, August 19, 2009 - 10:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi Team,
I just discovered this column after being away some time.I have a MFJ 259 Mk.1.I use an external DC supply,always have.
When powered up a small amount of RF is generated on the frequency displayed making this device an excellant low powered jammer.One can have many hours of harmless fun with any loud radios in close proxcimity.

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