Re: [Elecraft] KAT-500 Power Rating in Bypass

Hi Mike, I have a pair of KAT500's in my SO2R station. They're currently fed by a pair of 87As, and before that, a pair of TenTec Titans. Both are legal limit amps using the same tubes. My antennas are all close enough to resonance that I can use the tuners in bypass mode and use the

[Elecraft] KAT-500 Power Rating in Bypass

From the KAT-500 owners manual the power ratings are as follows: 3—30 MHz 600W into 5 Ω to 500 Ω (10:1 SWR).     1000W into 16 Ω to 150 Ω (3:1 SWR). 1.8-2.0 MHz 600 W into 10 Ω to 500 Ω (5:1 Low Impedance, 10:1 High Impedance SWR). Does anyone know what the power rating is for 160

Re: [Elecraft] K3 Power Drop During Operation

If you have the ATU, it can be fooled into thinking you have a bad match by AM broadcast stations nearby. If you have a nearby broadcast transmitter, a band reject filter is one solution. 73 Bill AE6JV On 1/25/18 at 3:54 AM, jma...@k8nd.com wrote: I was running some stations on 160-meters

[Elecraft] Y-BOX v1.3 Closeout Pricing; New Y-BOX v2.1 Now In Stock

To review, the Y-BOX provides a reliable and convenient way to connect the K3 ACC port to multiple devices, including the KAT500, KPA500, KPA1500, band decoders, DigiKeyers, RemoteRig boxes, etc. The Y-BOX replaces any 15-pin Y-Cables you may already be using. While supplies last (I only have a

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

I'm concerned about the same issue:  Multiple antennas on one band. I have an automated antenna selection system.  In addition to following the band data from the transceiver, there are switches to select antennas.  I frequently have to very quickly switch antennas, so it must involve only a

Re: [Elecraft] KPA500 cabinet buzz

My KPA500 (that I built about a year ago) buzzes in the same way as Michael's. My transformer is hard against the rubber buffers, the double-rubber pads are properly in place, and the bolt is nicely torqued down. I'd be interested in hearing any ideas to mitigate this issue also. 73, Dave AD6A

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

Multiple (4 to 6) antenna connectors is a nice feature of Expert amps. Once you have antenna matched, QSY to up to 2-3 antennas per band is automatic. The psychological effect is astounding, as trying to get SWR as close to 1:1 is becoming a waste of time. In my Expert 2k-fa I have 5 antennas

[Elecraft] KPA500 cabinet buzz

I just built my KPA500 today and on the air reports were good. 20watts Drive seemed right for about 500 watt peaks. After running it for about an hour I shut down to clean up the kit building mess and when I returned later I was hearing a loud 60 cycle mechanical buzz from the left side of the

[Elecraft] KPA1500 ATU - ability to handle more than two antennas

I use the band data from my K3S's to select the appropriate antenna and bandpass filters. John KK9A Dan AE9K dan at ae9k.com Thu Jan 25 14:48:50 EST 2018 While I'm awaiting the delivery of my KPA1500 I'm wondering if/how the amp's ATU can accommodate more than two antennas. For example, if I

[Elecraft] K3 in FT-8 + JTDX

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Re: [Elecraft] Non-Elecraft transceivers and the KPA1500

HiThe kpa1500 will be supported in the Win4YaesuSuite and Win4IcomSuite. shortly as well. 73 Tom  Sent from my Samsung Galaxy smartphone. Original message From: "Eric Swartz - WA6HHQ, Elecraft" Date: 2018-01-25 4:16 PM (GMT-05:00) To: Wayne Burdick

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

Dan, The KPA1500’s firmware is written to accommodate many more antennas. It would be a fairly simple matter to externalize a number of them in the form of a remote-controlled antenna switch. This is a good example of how the amp can be tailored to user needs. The firmware could be updated

Re: [Elecraft] Non-Elecraft transceivers and the KPA1500

Wayne, I am not sure what you mean by the following: > We’ve also refined our remote-control firmware to ensure that it plays well > with all major brands. You may want to give a more specific description. Remote control f/w is usually not specific to a brand of radio. Its just amp

[Elecraft] KPA1500 ATU - ability to handle more than two antennas

While I'm awaiting the delivery of my KPA1500 I'm wondering if/how the amp's ATU can accommodate more than two antennas. For example, if I have an antenna switch connected to one of the amp's antenna jacks is there a facility on the amp that would allow me to choose one of two /logical/ antennas

[Elecraft] Non-Elecraft transceivers and the KPA1500

I wanted to remind everyone that our new KPA1500 works great with rigs other than the K3 and K3S. Throughout the owner’s manual, you’ll find details on interfacing to Icom, Yaesu, and other brand transceivers. (One of our field testers has a Flex 6500 in his collection, which also works

Re: [Elecraft] OT: 3Y0Z Bouvet Island DXpedition

I have a DGPS station less than a mile from my house. It transmits 310-KHz. A few years ago the engineers doing maint. came over to my house to see my antennas and chat. Signal runs -30 dBm on my SDR-IQ (S9 = -73 dBm). At my former job we installed marine VHF radios with DGPS capability.

[Elecraft] Parts available for Elecraft K1 / K2 / K3

K1 & K2 owners, I have for sale excess to my needs now: (1) for the K1/K2 transceivers: the K6XX CW Indicator with False Blink kit, LED Button Option & header connect/disconnect option. These work well on the K1 and fairly well on the K2. NOTE: the kit requires soldering of SMD

Re: [Elecraft] Fwd: K3 Power Drop During Operation

Check for loose connections. Seems that there is a increase in resistance after prolong use. (((73))) Milverton / W9MMS. On Thursday, January 25, 2018, 7:11:14 AM CST, jma...@k8nd.com wrote: John: I checked it at the time. 13.3 Vdc  reported by the K3 meters. It

[Elecraft] Fwd: K3 Power Drop During Operation

John: I checked it at the time. 13.3 Vdc reported by the K3 meters. It seems solid (big Astron RS-50M) , and likely did not drop while operating. 73, Jeff PJ2ND / K8ND ** This first thing I would do is check the voltage at the radio. There is a voltmeter in my K3S so there probably

[Elecraft] K3 Power Drop During Operation

This first thing I would do is check the voltage at the radio. There is a voltmeter in my K3S so there probably is one in the K3. You could have a power supply issue or just low voltage in Curacao. I try to maintain 13.5V on TX. John KK9A K8ND wrote: Thu Jan 25 06:54:48 EST 2018 I was running

[Elecraft] K3 Power Drop During Operation

I was running some stations on 160-meters this morning, and noted that the power output had dropped from the amp. Further investigation found that the maximum power out from the K3/100 was reduced from ~100W to about 54W, with no error messages displayed on the K3. Advancing the 'PWR' control