80m用750硬拉，20w喊了半个多钟练个问号都没有，端馈拉下来SWR接近3出16w对面抄的很困难我听得也困难 160M干脆不用想了，s9+底噪

@"BI4UMB"#p1853 活动嘛重在参与，也试试我这套系统下限在哪

低波段尽量用长线吧今晚160比较热闹 B3 B5 B7 B8都来了8

@"SuoYuC"#p1852 肯定不能简单呀，如果是个天线都随便拉下来玩玩，弄大天线的HAM岂不是白耽误功夫了，哈哈。

@"BA3QU"#p1864 谢谢您满足了我的160m小小愿望，我20m端馈强拉的，SWR2.6功率16w😆

换icom的mn-100天线，短波全段不超过1.5的驻波（包括非业余段）

难就难在天线，用天调硬拉的效率很低，从天线端出去的没剩下多少功率了。

重在参与，我天心啊一共就四个波段，其他波段都没法发射

Very difficult, very difficult, very difficult

SuoYuC

Using a 80m antenna with a 750W amplifier, I spent over an hour trying to get a signal, but I didn't manage to make any contact. The SWR was close to 3:1 at 14 MHz, which made it difficult to transmit and receive effectively. It was also very noisy on the frequency, making it hard for me to hear anything clearly.
Forget about the 160M, just use the S9+. It has inherent noise reduction.

BA3QU

SuoYuC Of course, it can't be that simple! If you just casually pull down an antenna and play around with it, wouldn't a HAM who builds large antennas be wasting their time? Haha.

BH2UOD

SuoYuC It's unlikely you'll be able to lift 80 meters with a 750 kg load. I recommend using a 40-meter pull-back (without adding damping) for a better experience.

BI4UMB

I wish you all the best!

SuoYuC

BI4UMB The main focus of this activity is participation, and I also want to test the lower limit of my system.

BH8ESR

For low frequencies, I recommend using longer cables. Tonight's 160 MHz band seems to be quite active. B3, B5, B7, and B8 are all present.

BG6ic

BH8ESR There's also a B6.😁

SuoYuC

BA3QU Thank you for fulfilling my small wish of 160 meters; I'm using a 20-meter antenna to transmit, with an SWR of 2.6 and a power output of 16 watts.😆

BA3QU

SuoYuC 😊

BH3XZT

Replace the MN-100 antenna with an IC, ensuring that the SWR (standing wave ratio) across the entire shortwave band is no more than 1.5 (including non-amateur bands).

BD5XX

The difficulty lies in the antenna. Using a traditional, manually adjusted antenna results in very low efficiency, and there is very little power remaining at the antenna's output end.

BG3LGO

The focus was on participation; I only managed to transmit four segments, and couldn't transmit any others.

BG5LU

The 7M full-sized inverted V antenna was difficult to use, even with a manual tuning system for the power amplifier. It had very low efficiency and ultimately, I gave up on using it in the 80m band.

SuoYuC

BH2UOD I successfully completed two CW exercises.

Lynx

Last winter, I built a 40-meter long inverted L antenna, using 160 meters of wire and 5 watts to transmit to Taiwan, and 1 watt to transmit to Vietnam.

BI1JNP

I was able to use the 680 with nine frequency bands.

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