[OKDXA] ELECRAFT KPA1500

Thu May 26 23:35:52 EDT 2022

I am probably not as experienced as most of our DXers.  In 10 years, I only have 195 countries using 100W on an antenna at 32 feet or so while only operating occassionally.  My current FT-950 works best on FT-8 (and other digital modes) when I keep the power down.  Maybe after I hook up Dad's (SK) Quadra, I will have the option to "increase my power to what it takes."  😊  

Good luck and cya in the logs.

73

-Steve.

NE5SD

-----Original Message-----
From: okdxa-bounces at mailman.qth.net <okdxa-bounces at mailman.qth.net> On Behalf Of garylm at kiamichiwb.org
Sent: Thursday, May 26, 2022 9:41 PM
To: OKDXA <okdxa at mailman.qth.net>
Subject: Re: [OKDXA] ELECRAFT KPA1500

98 PERCENT OF TIME I RUN 35 TO 40W OR LESS, BUT IF A RARE DX STATION IS ON I WILL INCREASE MY POWER TO WHAT IT TAKES .  AND FT8 IS NOT A LOW POWER MODE, IT IS A LOW SIGNAL MODE.  STATIONS YOU WOULD NOT BE ABLE TO HEAR ON SSB, OR CW YOU CAN MAYBE HEAR ON FT8 OR FT4 MODE.

GOOD LUCK WITH WORKING THE DX,  I SO FAR HAVEN''T BEEN ABLE TO HEAR THE 3D2RRR ON ANY MODE.

73

GARY

On Thu, 26 May 2022 20:38:16 -0500, < <mailto:ne5sd.steve at gmail.com> ne5sd.steve at gmail.com> wrote:

I try to limit operations to 40 to 50W max. As Tim said, FT8 is for low power.

If you are operating high power, near-by hams may be blocked.

73

-Steve.

NE5SD

-----Original Message-----

From:  <mailto:okdxa-bounces at mailman.qth.net> okdxa-bounces at mailman.qth.net  On Behalf Of John Geiger

Sent: Thursday, May 26, 2022 12:21 PM

To: Oklahoma DX Association

Subject: Re: [OKDXA] ELECRAFT KPA1500

Because the DX can't always hear me with 100 watts!

73 John AF5CC

On Thu, May 26, 2022 at 3:03 PM Tim Duffy  wrote:

> The problem is this.... FT8 is a LOW power mode!

> 

> Why is ANY station using more than 100 watts on FT8?

> 

> 73

> Tim K3LR

> 

> -----Original Message-----

> From:  <mailto:okdxa-bounces at mailman.qth.net> okdxa-bounces at mailman.qth.net

> [ <mailto:okdxa-bounces at mailman.qth.net> mailto:okdxa-bounces at mailman.qth.net]

> On Behalf Of Roger Simpson

> Sent: Thursday, May 26, 2022 10:59 AM

> To: Oklahoma DX Association

> Subject: Re: [OKDXA] ELECRAFT KPA1500

> 

> Gary: I have an Amertiron 1306 aslo. I have had a similar problem to 

> yours with the 1306. Namely it will just NOT support FT8 at the high 

> duty cycles that FT8 uses. In my case I did NOT burn up the the amp .

> But the amp was not suitable for FT8 since it would shut down on its 

> own after a few minutes of running FT8 at a power level of about 300W.

> 

> I bought an ACOM A2100, which uses a vacuum tube final. The ACOM uses 

> a 4CX1000. I have been using the ACOM now for about six months. It is 

> holding up OK on FT8. FT8 has a much higher duty cycle than CW or SSB or RTTY.

> With FT8 you are running “full power” solid for 15 seconds half of the 

> time. You only get 15 seconds of rest for the linear to cool down.

> 

> I think the Ameritron 1306 needs better cooling such as a bigger fan 

> with more air circulating. I personally don’t know if there is a solid 

> state amp that is suitable for FT8 or not. I don’t know about the Elecraft amp.

> 

> I notice that big contest super-stations, such as K3LR, are using 

> vacuum tube amps. In K3LRs case they are homebrew amps. Vacuum tube 

> amps have to warm up, they use semi-obsolete parts, and they may have 

> loud fans, but they hold up with high “brick on key” duty cycles.

> 

> 73 Roger K5RKS

> 

> ================================================

> 

> Sent from Mail for Windows

> 

> From:  <mailto:garylm at kiamichiwb.org> garylm at kiamichiwb.org

> Sent: Wednesday, May 25, 2022 9:05 PM

> To:  <mailto:OKDXA at mailman.qth.net> OKDXA at mailman.qth.net

> Subject: [OKDXA] ELECRAFT KPA1500

> 

> 

> 

> 

> 

> HAS ANYONE HAD ANY DEALINGS WITH AN ELECRAFT KPA1500 SOLID STATE AMP?

> HOW THEY HOLD UP USING DIGITAL MODES, I HAVE HAD AN AMERITRON ALS1306 

> AND IT WOULD NOT HOLD UP TO WORKING FT8 KEPT LOOSING FINALS.

> WONDERING IF THE KPA1500 HAD THE SAME PROBLEMS.

> BOB AT ELECRAFT THANKS THEY WILL HOLD UP USING DIGITAL MODES, WOULD 

> LIKE TO HEAR FROM SOMEONE WHO HAS USED THEM WORKING STATIONS DAILY.

> THANKS

> GARY

> WQ5R

> 

> 

> 

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