Guest WRKQ944 Posted March 1, 2021 Report Posted March 1, 2021 Newbie here with a informative/question. I recently purchased a NA-771 HT antenna on close out thru Wally World for 7.79 shipped and when I tested the SWR it was 6.4. I didn’t like that so figured for the 7.79 I had into it I would start trimming it down to see if I could improve the SWR. I cut it in 1/4 inch increments until the Swr was below 2.5 and then cut it in 1/8 increments until I stopped at an SWR of 1.4 on Channel 15. It is now at a 6.5 inch overall length which is a 1/4 in. Longer than the stock antenna! Haven’t had a chance to do range tests or comparison with stock yet! Question for all you experienced guys is did I do the right thing or did I ruin it and wasted my 7.79? Just as an FYI - I do believe the antenna is a true Nagoya and not a knock off as it was in a orange sleeve and has a Blue name/number on antenna base. Thanks to all! Quote
WRCZ387 Posted March 2, 2021 Report Posted March 2, 2021 The NA-771 is tuned to the amateur frequencies, not GMRS, that's why the SWR was so high440-450 MHz compared to 462-467 MHz, that's a 20+ MHz difference The stock antennas are usually very broad-banded & inefficient I just looked at mine & it's labeled 136-174/400-520That's probably the antenna from the UV-82 radios The least expensive quarter-wave for GMRS [that I know of] is a Nagoya NA-701C,which is tuned to the VHF/UHF commercial frequencies [so it would also cover MURS on VHF]and is way closer to GMRS It's sold in the mygmrs.com store for $14.99https://shop.mygmrs.com/collections/antennas/products/nagoya-na-701c-antenna You spent $7.79 & some time to get an antenna that will perform on the GMRS frequenciesI'd say that you broke even brasda91 1 Quote
Recommended Posts
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.