Alexis, I've run into a snag in fixing my 827 models and the project will be delayed.
I mentioned earlier that my 827 model was setup a bit different from your installation and my model is set at 36' feet. I will have to delay fixing my model to get closer to your specs.
However, I did do a Bandwidth comparison below and my 2.00:1 and 1.5:1 SWR results which shows to be close to your report. My Bandwidth however is less, and that is probably due to Eznec showing the match at the feed point, and not at or near the typical TX'r end of the coax.
Alexis 827
SWR ——- Short Radials ——- Long Radials
2.0. ———-- 28,150 ——————- 28,450
1.5 ——- —- 27,810 ——————- 27,880
1.0 ——-—- 27,255 ——————-- 26,965
1.5 ———-- 26,540 ———- ——— 26,415
2.0 ———-- 25,820 ———- ——— 26,100
BW = 2.330 MHz ------------------ 2.350 MHz
Marconi 827
SWR ——- Short Radials ——- Long Radials
2.0. ———-- 27,900 ——————- 28,100
1.5 ——- —- 27,600 ——————- 27,800
1.0 ——-—-- 27,200 ——————- 27,400
1.5 ———--- 26,750 ———- ——-- 27,000
2.0 ———--- 26,450 ———- ——-- 26,700
BW = 1.45 MHz -------------------- 1.400 MHz @ feed point
Here on the Gulf Coast of Texas we have an African Sahara Desert Dust storm coming our way and my lung health will suffer for a while. I'm already feeling bad.