Hello folks, I am looking for the practical , empyrical, real info based on the individual measurements of the maximum Key-down time/temperature at the 10w output of the KX2 before it drops down to 5 W issuing a message of "HI TEMP". I would also like to learn about comparison of the KX2 stock heatsink vs the Pro-audio Engineering KX22 product.
The reason is that I have decided to install the KX22 on my KX2 ( # 148*) after a short dx-pedition to Aland islands in May. I was handling quite a pile-up from the hotel room and after some 5 min of intensive CQ-ing and answering on CW the PA temperature gone up to 59-60C degrees and the power dropped down to 5 W and it was frustrating :) Today I have installed the PAE KX22 heatsink. The key-down at 10 W into a dummy load in CW mode lasted for around 3 minutes starting from the ambient temp. 27C. I don't think this is very impressive baring in mind the Pro-audio's claim of the 250% key-down time improvement. Unfortunately, I was not so smart to test the key-down time with the stock heatsink before I changed it to the new one, :) But I remember Wayne was posting here in the previous thread something abt 7 min of key-down at 10W... So, with the 250% improvement with the KX22 it should last... for some 24 min?! in my case, It doesn't sound very realistic , neither 7 min with the stock heatsink, nor 24 min with the Pro-Audio ( maybe ,bad thermal contact, not enough of grease?). That's why it would be very interesting to compare the real-life empyrical data of the other KX2 owners. 73! Linas LY2H ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
