Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

NARDA sem123N (1200w at 150-MHz) in the high power ckts. 73, Ed -KL7UW From: "Joe Subich, W4TV" To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500/KAT500 paired with AL-1500? Message-ID: <3bc97592-0eac-519c-11c9-2ac21fd49...@subich.com> Content-Type: text/plain; charset=utf

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

The Alpha Delta switch that I use on the output of my KPA500 and 87A grounds unused connectors. Thus my KPA500's antenna port is grounded if I am using the 87A and vice versa. 73, Jim N7US -Original Message- A pair of the Tohtsu CX-600NL relays from Surplus Sales of Nebraska

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

A pair of the Tohtsu CX-600NL relays from Surplus Sales of Nebraska should work just fine. It would likely take a pair of transfer relays - one on the input and one on the output of the amplifiers to do the same thing. The only

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

Not sure this would work for your application, but I recently installed a DowKey 412-2301 Transfer Relay in my 6m system to switch in my Harris 1kW 6m amp or to bypass it. Might require a couple relays for this to work with two amplifiers. http://www.kl7uw.com/2016_Station.jpg The DowKey rela

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

I used to switch two amps. I used a pair of surplus coaxial relays to switch the inputs and outputs. I have my amps set up with a 12v 'enable' input which operates a relay to put the amp in standby or operate mode, and the switch that operated the relays also switched this line. I simply isolate

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

I key my KPA500 through the aux cable from the K3 and my 87A through my microKEYER II. Only one amplifier is powered on at a time. 73, Jim N7US -Original Message- I key the KPA500 and Titan in parallel, but only the one that gets RF transmits. :) I can do that because the two amps use

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

I key the KPA500 and Titan in parallel, but only the one that gets RF transmits. :) I can do that because the two amps use the same keying logic and the amp key line feeds a transistor. 73, Jim K9YC On Sat,10/22/2016 5:28 PM, j...@kk9a.com wrote: How do you control which amp's relay engages

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

> Mark, WB9CIF > > -Original Message- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of > j...@kk9a.com > Sent: Sunday, October 23, 2016 12:29 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA500/KAT500 paired with AL-1500? > > Ho

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

e. If not, let me know and I will try and clarify it. Mark, WB9CIF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of j...@kk9a.com Sent: Sunday, October 23, 2016 12:29 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500/KAT500 paired with AL-1500?

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

Ahhh yes. DC is so much easier to switch, unless you start an arc of course. 73, Fred K6DGW - Sparks NV DM09dn - Northern California Contest Club - CU in the Cal QSO Party 7-8 Oct 2017 - www.cqp.org On 10/22/2016 7:02 PM, george allen wrote: I have built a switch to switch radios to a parti

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

I have built a switch to switch radios to a particular antennas to take to our club shack. The best isolation I could get was 37dbm. Not good enough, so we are moving a jumper between UHF connectors. Sent from my iPad > On Oct 22, 2016, at 7:12 PM, Jim Miller wrote: > > I'm considering addin

[Elecraft] KPA500/KAT500 paired with AL-1500?

How do you control which amp's relay engages during TX? John KK9A From: Mark E. Musick I do this with my Alpha 9500. But differently than K9YC. I use the two antenna ports on the K3 and an Alpha Delta 2 position switch. Antenna one on the K3 goes to the KPA500 input. Antenna 2 on the K3 goes to

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

I have a KPA500/KAT500 and an 87A/ATR-30 tuner connected to my K3. Not important, but I have an Array Solutions Power Master II wattmeter with two couplers connected to the amplifiers' outputs. My approach is pretty low tech. I have the 87A connected to the K3's ANT2 port and the KPA500 connecte

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

d it works for me. Mark, WB9CIF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Miller Sent: Saturday, October 22, 2016 11:12 PM To: Elecraft Reflector Subject: [Elecraft] KPA500/KAT500 paired with AL-1500? I'm considering adding a bi

Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

Hi Jim, I'm doing exactly that, but with a Ten Tec Titan 425 rather than the 1500. My method is pretty simple -- I'm using two of W2VJN's 1x2 Top Ten relay boxes, one at the inputs, the other at the outputs. They work well, except that the SWR is pretty poor on 6M (and is starting to rise on

[Elecraft] KPA500/KAT500 paired with AL-1500?

I'm considering adding a bigger amp to the shack. I'd like to continue to use the KPA/KAT combo for quick hits and the bigger amp if/when needed. So I'd like to make it convenient to switch between them. The people I've talked to so far actually move coax to make the switch. I'd like to avoid that