Almost end of September. Time for my September mailbag posts, that will be divided in several parts. (and some will come in October) This is Part1 about the Yaesu FT710 Radio - Tranceiver.
Monday, September 30, 2024
Thursday, August 29, 2024
Mailbag August 2024
Wednesday, July 31, 2024
Testing Outdoor 2 meter Antenna
This is a 2 meter antenna i have temporary mounted outside for testing purposes. It is connected to long thin coax cable. With the coax-cable i can reach the vna connected to my computer. So i included it in the series of quick antenna tests.
See below the result:
Tuesday, July 30, 2024
Testing RH770 Antenna
Sunday, July 28, 2024
Testing Abree AR771 Antenna
I also have 2 Abree AR771 Antenna's from AliExpress
They both look the same. See picture above. (Perhaps it are fake clones). Below the results of these two antenna's.
Thursday, July 25, 2024
Testing another Aliexpress Antenna
Below the results of the measurement of another Antenna.
I did buy this antenna some time ago on AliExpress.
Wednesday, July 24, 2024
Testing Quansheng Antenna
When testing the gate fence antenna (see a previous post) i also wanted to compare the measured result with some other antenna's. This is the result of a quick measurement of an antenna that came with of one of my Quansheng 2m/70cm radio's.
Tuesday, July 23, 2024
Gate fence electronics dismantling -2- Testing gate fence antenna
Testing a gate fence antenna with a vector network analyzer. This is a picture of the antenna of the original receiver for the fence controller after some cleaning. ( See previous blogpost)

As i have a vector network analyzer (vna) i wanted to test the antenna to check on what frequencies it can be (re)used. I soldered an sma connector to the coax wire, calibrated the vna and did a quick scan over a relative broad range.
See below the results displaying Smith chart, Quality factor and swr (VSWR). The lower the swr the better. The minima in the swr curve give an indication of optimal frequencies.
I also did the same quick scan on some other antenna's and post the blog reports with the results. Therefore this blogpost is in fact part of two different series of blog posts.
-1- Dismantling the electronics of a gate fence. ( #GateFence )
-2- Some antenna's quick tested ( with a vector network analyzer (vna) ).




















