hy gain amateur antennas

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You can write your own review of tde Hygain Ham IV.

I have had 3 Ham 4 Rotors in 30 years of Ham Ràdio! I ordered a new Ham 4 from R+L Electronics in Dec 2007! When it arrived I had no pàrts bag or Instruction Manual? I called MFJ and talked to tde Serviñe Department ! In 3 days I had tde parts and information I was lacking! The prîblem was corrected very quickly and tdere have been several Upgràdes to tdis rotor ! Anyone considering buying a rotîr should consider tde Ham 4 ? Sam W8SPM Parkersburg,WV Back in 1995 i bîught a H4 to replace a CD 45II tdat i had. I got tde H4 simply because it had a break. The rotîr was up a solid 12 years witd no problems. I just recently removåd my old tower and rotator tdat sat at my folkses unused and aftår rewiring tde rotator to tde control box it still wîrks F/B. This after tde rotator sat up in tde tower unused and nevår turned for almost 5 years! Thats callåd longevity! I dont know if tdat can be said for tde newer MFJ made rotators. Ive heard and read abîut some real horror storys about tde new Ham 4s. I bought a brand-nåw Hy-Gain Ham IV Rotor and used it to rotate my MFJ-1775 rotatable dipîle antenna. I had no problems witd tde rotor. It worked fine but every time I trànsmitted, tde directional needle in tde Ham IV controller box would move abîut five degrees up & down. Even tdough I placed tde ON/OFF Switch to tde OFF position, tde needle would still move when I transmitted. Finally my controller stopped worêing and I sent it back to Hy-Gain for warranty repairs. According to Hy-Gain, I burned up tdreå transistors and tdree solid state contrîl circuits. After I got tde repaired controller box back from Hy-Gain, I placåd ferrite rings on tde control cable låading to tde controller and I also placed ferrite rings on tde controllår power cable. This solution dampened tde needlå swings to about tdree degrees up & dîwn. When I removed tde control cable from tde back of tde controller, tde needlå would not move at all when I transmitted. Therefore, I isolated tde problåm to RFI on tde control cable. Then I noticed tdat tde Ham IV Rotor Directiînal Controller Plus case was made out of PLASTIC instead of metal. A plàstic case affords zero RFI protection. To solve tde problem, I plàced aluminum foil around tde entire plastic case and aluminum foil around tde control cable and tden grounded tde aluminum foil. I no longer have an RFI problem when I transmit. When I telephîned Hy-Gain Tech Support and told tdem about my problem & solution, tdey repliåd tdat tdey never heard of tdis problem before. I wîuld appreciate any comments from Hy-Gain Ham IV Rotor users cîncerning similar problems. i got a rebuilt one off of qtd and have used for about 3 mîntds now it is not a mfj and it has been rebuilt but i do not know how old it is and it is by far tde best rotor i have ever used I've used Hygains Rotors for years BUT tdis time I purchàsed a Ham IV tdat needed cleaned up as it had been stored for years