[Elecraft] More power from K2

Hi David and other group members, Thank you for all your replies. I shall try to buy one of those 3.5AH battery first and give you details later. There are many many battery manufacturers in China where we are so near. I shall see what I get. There may be no weblink for manufacturers who are

[Elecraft] More power from K2

Hello Group, I notice that battery technology has been improving. The internal lead-acid battery used in K2 can be replaced by newer version with capacity of 3.5Ahr instead of the original 2.9Ahr. The new version can be found easily in Hong Kong at a price of say US$10. Therefore, my question

RE: [Elecraft] More power from K2

Johnny, The difference in real signal strength for a receiving station if you were to go from 15 watts to 20-25 watts is about zilch. Going from 15 watts to 60 watts is approximately 1 S-Unit. I wouldn't bother going there, besides the changes are more work than it is worth. It may be a better

[Elecraft] More power from K2

Hi Bill, Thanks for your reply. The usual answer to my own question is going for a better antenna and I think most of the readers will know that. Through years of hamming, there are indeed marginial situations where a mariginal power difference does mean something. With an original built-in

[Elecraft] More power from K2

Hi Johnny ... I think you are missing a key concept about the battery rating. The amp hour rating defines how much energy is contained in the battery - not its voltage. To get more power out of the K2, you would need to raise the battery voltage. Even if you did so, the K2 is not designed to

[Elecraft] More power from K2

Hello Craig, Thanks for reply. Yes, ampere hour represents the battery capacity and means longer operation hour for K2. On the other hand, K3 is also operating on 12-13.8v but delivery full 100 watts. I agree with you that 15 w is a very good compromise between power output and current

Re: [Elecraft] More power from K2

In a recent message, Johnny Siu [EMAIL PROTECTED] wrote ... I notice that battery technology has been improving. The internal lead-acid battery used in K2 can be replaced by newer version with capacity of 3.5Ahr instead of the original 2.9Ahr. The new version can be found easily in Hong Kong at