请问大佬们这俩机器有啥具体区别吗，想入991玩

@"BD4WCL"#p65916 原版是扫描式频谱，A型是实时频谱+瀑布流。除此之外就是A型作为小改款，性能上有些**微弱的**提升。

@"BloodBlade"#p65917 功率啥的没变化吧

@"BD8CCU"#p65965 没事，等我考b的时候也用不到大功率

@"BD4WCL"#p65969 不是据说都停产了吗

@"BG7NOD"#p66290 对，是人家机器多，我买的人家闲置的机器

说是991设计上有bug，还没卖完就出了991A，那时候还没有网购，可苦了那部分买991的人了

@"BD4UJA"#p66293 啥BUG，他们用着还好啊，我买主要是他便宜

@"BD4UJA"#p66293 总比891好一点吧

@"BD4UJA"#p66293 我咋查都没查到有你说的BUG啊，都只说了加了实时频谱而已

Differences between FT991 and FT991A

BD4WCL

Hey everyone, are there any specific differences between these two machines that I should be aware of? I'm considering buying the 991.

BloodBlade

BD4WCL 原版是扫描式频谱，A型是实时频谱+瀑布流。除此之外就是A型作为小改款，性能上有些微弱的提升。

BD4WCL

BloodBlade The power hasn't changed, has it?

BloodBlade

BD4WCL 🈚️

BD8CCU

It is said that amplifiers without A will easily overheat.

BD4WCL

BD8CCU It's okay, I won't need a high-power device when I take my exam.

BG7NOD

BD4WCL Isn't it said that all of them have been discontinued?

BD4WCL

BG7NOD Yes, I'm buying machines that others have surplus of.

BD4UJA

The source claims that there was a design flaw in the 991, and before it could be fully sold, the 991A was released. At that time, online shopping didn't exist, which caused great inconvenience for those who had purchased the 991.

BD4WCL

BD4UJA What bugs are they encountering? They seem to be working fine for them, and I bought it mainly because of its low price.

BD4WCL

BD4UJA It's probably a bit better than 891.

BD4WCL

BD4UJA I haven't been able to find any bugs like you described, all I found was that they added real-time spectrum analysis.

BD4UJA

BD4WCL According to what I heard from Old Ham, and don't rely on the real-time spectrum of the 991A – it's completely useless.

BD4WCL

BD4UJA Therefore, I bought a 991, and it was in excellent condition.

BI4IVE

A good example of an improved, high-performance type is:
59-Ⅰ type
59-II
59-IIA
59D
59T
59G
And then there's "Six-Uncle".
J-6 prototype
J-6A
J-6I
J-6 II
J-6 III
J-6 IIIG
J-11/6
J-6 Unmanned Aircraft
J-6B
J-6IV
J-6 XIII
J-6C
And, in my opinion, they are all either improved versions or modifications that address the shortcomings of previous generations, or enhancements for specific features. The data above is sourced from the internet and is only an example; I will not elaborate further.

BloodBlade

BI4IVE One pair, two pairs, three pairs, four pairs, five pairs🤯

Felix

BI4IVE
六爷不是轰6嘛。被改得字母都快不够用了
😁

BI4MIG

BI4IVE
六爷不是轰6蛮？

Moonlight

It shouldn't be 59, 59 modified, 59 modified modified, 59 modified modified modified... (Dog Head)

BI3QIY

Moonlight 59、59+10、59+20 🐶

BD4UJA

BD4WCL Generally, there shouldn't be any major issues. When using FT8, avoid prolonged high-power transmissions. The finished product should not have significant problems.

BD4WCL

BD4UJA Thank you very much for your guidance.

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