WRPL862 Posted Saturday at 08:38 PM Report Posted Saturday at 08:38 PM The reason I ask is a 4.5dbi comparing patterns seems like it would work best in the mountains for me with my mobile radio @50watts. can it be done with extra cable? also how would I measure a fine tuning for dbi? Quote
1 OffRoaderX Posted Sunday at 07:31 PM Report Posted Sunday at 07:31 PM My guess is you would never notice the difference. SteveShannon and AdmiralCochrane 2 Quote
0 SteveShannon Posted Sunday at 02:48 AM Report Posted Sunday at 02:48 AM It might be impractical. The 6 db antenna might be a 5/8 wave antenna and the lower gain might be a quarter wave. If you want to see what it takes try simulating the high gain antenna and then see what it takes to make it into a quarter wave. Personally I would try the antenna you have. If it works well enough just use it. Otherwise sell it and buy the antenna you want. AdmiralCochrane, WRYZ926 and WRPL862 2 1 Quote
0 WRPL862 Posted Sunday at 07:23 PM Author Report Posted Sunday at 07:23 PM I guess I am wanting the best of both worlds. I the mountains where I live with lots of trees and a lower dpi is preferred but reaching the repeater with a higher dbi is also preferred as I travel out of the home area. I guess using a diplexer for two different dbi is not going to work either. If they made an antenna with a wide pattern at 6 dbi I guess it would be the only antenna people would buy. LOL Quote
0 SteveShannon Posted Sunday at 07:39 PM Report Posted Sunday at 07:39 PM 5 minutes ago, WRPL862 said: I guess I am wanting the best of both worlds. I the mountains where I live with lots of trees and a lower dpi is preferred but reaching the repeater with a higher dbi is also preferred as I travel out of the home area. I guess using a diplexer for two different dbi is not going to work either. If they made an antenna with a wide pattern at 6 dbi I guess it would be the only antenna people would buy. LOL The antenna I use for ham radio is 2.15 dBi. I’ve communicated thousands of miles on 50 watts with it. Gain matters, but the nulls in the propagation pattern have more of an effect. Don’t obsess over the extra 1.5 dB. Instead, look at the pattern of the antenna. Are there nulls? At what angle do they appear? Then do the trig to figure out how much higher or lower than you a station would need to be in order to be in a null. I doubt you’ll ever see that happening. WRTC928 1 Quote
0 tweiss3 Posted Monday at 03:57 PM Report Posted Monday at 03:57 PM 20 hours ago, OffRoaderX said: My guess is you would never notice the difference. This is the real answer. SteveShannon 1 Quote
Question
WRPL862
The reason I ask is a 4.5dbi comparing patterns seems like it would work best in the mountains for me with my mobile radio @50watts.
can it be done with extra cable?
also how would I measure a fine tuning for dbi?
5 answers to this question
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