Discussion in 'VHF/UHF - 50Mhz and Beyond' started by MRBOMBASTIC, Sep 3, 2018.
Does across town count!
Yes, I think so as I communicate simplex with my spouse frequently. We only got our licenses a year or so ago. Am I missing something?
Re-post to the database forum and ask them to change your username to your call sign.
Fixed thousands of ht's in a commercial 2-way shop.
Very last test was to transmit and look at a simple field strength meter up on the wall.
A 6 inch antenna is a six inch antenna.
Bigger is better for "getting out", but is very hard on the connector.
ASSUMING your antenna is in fact tuned for the frequency you think it is, there is no difference between similar length antennas.
Also, consider the difference in wavelength between frequencies when compairing to a full sized quarter wave antenna, above 430 mhz a rubber duck probably is a quarter wavelength.
It depends on the "rubber ducky" as to how long the antenna is. Yes, a 6-inch antenna on 70 cm is going to be a quarter-wave long. However, there are those antennas that are just over an inch long that are also sold for 70 cm. Those antennas really stink!
I lost count on how many handheld, and portable, commercial FM two-way units that I have seen over the years. First, my junior year in college, as a technician at the Motorola Service Station in Atlanta, Georgia, next, my senior year when I established, and then managed, the first Motorola owned portable / pager repair facility away from the Schamburg, Illinois, plant, then owning, for going on 10-years, the Motorola reconditioned equipment center for the south-central United States, followed by another almost 10-years owning sales / service companies, and finally as a communications consultant for over 20-years.
I still hate the sound of 2-tone sequential paging!
The antenna that comes with the UV-82 works the best.
The telescopic "Hot-Rod" antenna, though seldom seen- was & is a good performer. Short of that ( a longer antenna ), for a given height- most antennas that you would connect to your HT will have the same lousy performance- because they are almost all just a helical ( spiral ) wire coated with an insulator. Some of the truly cheap ones will perform worse, but not by much. The big question is how long the antenna will last until the insulation 'cracks'. That depends on how much sunlight and flex is involved. Sunlight accelerates the aging of most plastics.
I can verify and attest that the MFJ "Long Ranger" telescopic antenna was awesome on two-meter VHF. I used it on a Yaesu VX-170, and it was a whole other world compared to the stock duck. It's length wasn't practical, but if you wanted sheer range - that thing was a winner.
Coming back to this thread, I have tested many antennas used on dual band HTs.
The tests was done on an antenna analyzer and showed 90% of the time the same Duck antenna was no good on 70cm
even through the antenna came with the radio.
Some may disagree with this kind of test but the analyzer has the same or more mass as the radio it is used on, and should be as close to the same as the radio for measuring antenna impedance.
Just a good thing the HT is only powered by 7 volts or the final stage would be in danger from high SWR.
The HT has no active power foldback system and the RF device is rated well above a 7 volt operating level such that SWR damage almost never occurs.