The following is a summary of the subject vertical -- I sent my request to both reflectors since I was interested getting as much information as I could. I received 28 responses from the following 20 Amateurs -- N6TR, KC0NA, W5AJ, KH7M, K0HA, KF4HK, K9UWA, K8AK, N5AR, W8EB, W7WHY, W4FOA, K1ER, K4JRB, K0LW, K4VUD, K3KO, N0AT, K7DBV, K5QY --- In that order and I hope I didn't leave anyone out. 1. There was only one negitive response and that Ham considered the HT-18 to be a "Dummy Load" on most of the bands 2. 160 mtrs -15 responses addressed 160 mtrs specifically, performance, bandwidth & ease of QSY and 9 addressed inverted L as the preference vs full vertical. - 9 responses discussed problems with the top insulator breaking down with 500 watts or more being applied. - 2 advised that Hy-Gain was aware of the problem and made a new insulator available free of charge in 1996. (new different material) - 5 discussed modifications some of which increased the height of the top vertical section to about 68 ft. 3. Phasing - 13 covered the HT-18 in 2, 3 or 4 square and where to obtain more information on the subject. Hy-Gain has a free instruction/spec sheet on phasing the HT-18 and info on modifications on their WEB page. For whatever reason I have not been able to bring up the WEB page from my internet provider. 4. 2 stated that they thought the antenna was rather pricey but several said they wouldn't trade theirs for anything since they were very pleased. 5. Overall (except for the one mentioned above) everyone is pleased with the HT-18 and that was the kind of information I was looking for. If anyone wants more specific information please contact me directly at my e-mail address "K0GEX@JUNO.COM" or "K0GEX@PRODIGY.NET" 73, Ed, K0GEX, Austin, TX