Re: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!**

Hi folks, FOUND THE PROBLEMMaybe?? I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50'

[Elecraft] Elecraft CW Net Report

Good Evening,    Twenty meters had a steady, windy sound to it.  QSB was medium slow but signals were weaker than last week.  Forty meters was stronger but the QSB was deeper.  I was told of thunderstorms in California but could not hear any lightning static.  There were a few whistlers and

[Elecraft] ALC

Never used it on the S Line, never ever on Elecraft. Watch my drive, watch my waveforms, it was invented in the olden days to keep lids from splattering. Just not necessary. Limit your drive. Voice peaks matter. It’s so much easier now I don’t know why it’s still included on radios and amps.

[Elecraft] K3S passes 5 & 50w tests but . . .

Hi, all concerned: My previously-owned K3S sn 11000+ passes the 5W & 50W tests, but won't output more CW power than: 70W on 160M 80W on 80M 90W on 30M 70W on 15M. The rig goes right to 110W on the remaining bands. I suspect bandpass alignment problems, or forbidden adjustment of caps/pots, and

[Elecraft] [K3S] sub receiver filter recommendation

I am migrating my K3 [Ser# 6232] to a K3S with a sub-receiver. In the K3S main receiver I will have the following crystal filters from the K3: 2.8Kc 8-pole Elecraft 1.9kc ?-pole Elecraft 0.5kc 8-pole Inrad 0.2kc 5-pole Elecraft I operate almost exclusively CW in contests and DX chasing. in

Re: [Elecraft] [K3] Spontaneous HI CUR, audio reduction in RX mode - UPDATE

I may have found the cause of the anomalous HI CUR warning in **receive** mode, thanks to my big orange Maine coon cat, Mr. Opie. In rubbing his chin on the VFO B knob while I was listening last night, he rotated the control to the 12V DC bus voltage display, which I then noticed was oscillating

[Elecraft] K3s - Low Output Power

My K3s has been in service for several years. Power output has always easily reached roughly 100 watts. Now, with: 1. ATU TUNE bypassed 2. Good 50 ohm dummy load 3. W1 in line with the load 4. SWR 1:1 Next: 1. With the PWR control set to show 100 watts on the LCD

[Elecraft] Noise with amp

I’m seeing the same thing with my KPA1500. All bonding is good. It appears on ten meters with about 10-dB and with about 15-dB on six meters. Sent from my iPhone __ Elecraft mailing list Home:

Re: [Elecraft] ALC control of W6PQL amp from my K3

I connect the computer to my K3S with one USB cable. That's all that's needed as it handles all of the signals and commands. KISS!Works great. Bob, K4TAX Sent from my iPhone > On Mar 10, 2019, at 4:51 PM, Bill Frantz wrote: > > I lost the SignaLink as well, but I think a lot of

Re: [Elecraft] ALC control of W6PQL amp from my K3

I lost the SignaLink as well, but I think a lot of readers of this list use one. I currently use the internal "sound card" in my upgraded K3, or a home brew interface based on a $5 sound card from Amazon on my KX3. 73 Bill AE6JV On 3/10/19 at 2:40 PM, wes_n...@triconet.org (Wes) wrote:

Re: [Elecraft] ALC control of W6PQL amp from my K3

True to a point.  I would (and did) lose the SignaLink.  I use my Lenovo laptop's internal sound card, even with a K3S. Wes  N7WS On 3/10/2019 2:16 PM, Bill Frantz wrote: What makes Don's excellend advice harder is that there may be as many as 4 audio level controls between the computer and

Re: [Elecraft] ALC control of W6PQL amp from my K3

TUNE is a bit different than normal operating.  The power control is not as tight. I am speaking from my K2 experience, but the K3 has about the same power control mechanism 73, Don W3FPR On 3/10/2019 5:03 PM, John Simmons wrote: I have seen overshoot in the TUNE mode. -John NI0K

Re: [Elecraft] ALC control of W6PQL amp from my K3

What makes Don's excellend advice harder is that there may be as many as 4 audio level controls between the computer and the transmitter. (The one in the program, the OS's control, one on the interface box (SignaLink), and the one on the radio.) My solution is to have all but one, the one in

Re: [Elecraft] ALC control of W6PQL amp from my K3

I have seen overshoot in the TUNE mode. -John NI0K Don Wilhelm Sunday, March 10, 2019 2:40 PM I am left wondering if some K3 users who are seeing "Overshoot" are actually seeing what is referred to as "Power Hunting". That would occur mostly in Voice or DATA

Re: [Elecraft] ALC control of W6PQL amp from my K3

I am left wondering if some K3 users who are seeing "Overshoot" are actually seeing what is referred to as "Power Hunting". That would occur mostly in Voice or DATA modes when the audio level is not set high enough. With insufficient audio, the K3 can initially go up to the set power, and

Re: [Elecraft] ALC control of W6PQL amp from my K3

And with my P3 or SDR when one closely examines a signal, the evidence of improper ALC usage or ALC overshoot is very prominent with many signals. The sad thing is that it can be corrected with proper settings and usage. There is no need to occupy 10kHz of the band. And just listening to a

Re: [Elecraft] KPA/KAT500 Mystery Fail - solved

Thanks to some (kind advice and well deserved goading) from Mike, K6MKF and Ken, WA2LBI – I worked out the issue – unfortunately the fix appears to be a visit to ICOM repair if access to components is as bad as I fear. For the general edification of other ICOM 7XXX owners: Two KEY control

Re: [Elecraft] ALC control of W6PQL amp from my K3

On 3/10/2019 11:34 AM, John Simmons wrote: Once I got my LP100, I began to see the same behavior with my K3. This type of output anomaly is a huge reason to use ALC. I've had an LP100 in line for several years, always set to read peak power, and the most overshoot I've seen from either of my

Re: [Elecraft] P3 SPAN Instability

No, the save/restore restored everything to how it was before. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 10 Mar 2019 20:57, Dave Cole (NK7Z) wrote: I have been thinking of that.  When you did it, was your P3 revocered to the same exact setup as

Re: [Elecraft] P3 SPAN Instability

I have been thinking of that. When you did it, was your P3 revocered to the same exact setup as when you saved the config file? Did you have to resetup anything else? 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer

[Elecraft] west mountain computer speakers power input

*/Thanks Jim I misplaced the wall wort or the input info, so its 12 volts at 2 amp positive on the center pin, thanks for the help guys Regards Art ka9zap /* __ Elecraft mailing list Home:

Re: [Elecraft] ALC control of W6PQL amp from my K3

Wes, Once I got my LP100, I began to see the same behavior with my K3. This type of output anomaly is a huge reason to use ALC. 73, -John NI0K Wes Sunday, March 10, 2019 9:39 AM Indeed. Folks who would never think to turn off the AGC in their receivers get

Re: [Elecraft] KPA/KAT500 Mystery Fail

Hi Ken, All, Mike, N6MKF, sent me a direct email recommending that I try cleaning the connectors. I followed his recommendations again. No joy. The 7100 does not behave as a “generic” rig. Remember that the more recent ICOM’s all use a 4 pin Molex for their ATU connection and have a 13

[Elecraft] Elecraft CW Net Announcement

Good Morning,    Check the new net times.  I wanted to keep the propagation instead of moving the nets.  So I did not change the Universal times but rather the local times.  If I would have used my normal methods the propagation would be much different.    Now, hopefully, there will be some

Re: [Elecraft] west mountain com speaker power supply info

Art, I have two pair of those speakers - one pair from the PC audio and the other from the two K3 audio channels. I run them both from my shack 12 VDC power supply. (i hate wall warts) -larry (K8UT) -- Original Message -- From: "Arthur Nienhouse" To: Elecraft@mailman.qth.net Sent:

[Elecraft] west mountain com speaker power supply info

/*Can anyone help with power in put for the twin speakers west mountain is selling COM spkr computer spk system.. CS1 # 58409 950 The back is labeled DC IN but nothing as to voltage and pin out. There is nothing I can find on there web site or internet. Any help would be greatly appreciated

Re: [Elecraft] P3 SPAN Instability

I've never had any trouble with REF LEVEL, but it can't hurt to try the save / reset / restore routine and see if it helps. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 10/03/2019 18:14, Dave Cole (NK7Z) wrote: I am seeing something similar to

Re: [Elecraft] Nasty spurs on RX with new KPA500

Yes Jim, everything is bonded. All 120V and 240V AC goes through ICE suppressors on a SPG, all shack equipment is bonded to that, etc. It's not a bonding issue (I have read and followed your "cook book" long ago). Several direct e-mails indicate it's an issue with the front panel board and

Re: [Elecraft] P3 SPAN Instability

I am seeing something similar to this as well... Not in SPAN, but in REF LVL. I set REF LVL while on 30 Meters, and leave the band. Ssometimes when I return to 30, I need to touch the REF LVL level to get it to return... By touch, I mean I select REF LVL, then just turn the knob ever so

Re: [Elecraft] 80m KPA1500 High reflected power problems

And the dipole wire (especially the ends) needs to be away from branches, shrubs ,etc. John KK9A -Original Message- From: Don Wilhelm [mailto:donw...@embarqmail.com] Sent: Saturday, March 09, 2019 11:07 PM To: Peter Dougherty; j...@kk9a.com; elecraft@mailman.qth.net Subject: Re:

[Elecraft] Fwd: P3 SPAN Instability

> Begin forwarded message: > > From: Gary J Ferdinand > Subject: Re: [Elecraft] P3 SPAN Instability > Date: March 10, 2019 at 11:43:06 AM EDT > To: Victor Rosenthal 4X6GP > > That was an excellent suggestion! I hadn’t thought of the factory reset. I > did as you suggested. So far all is

Re: [Elecraft] KPA/KAT500 Mystery Fail

Jack, I assume the two cables you use are the RF coax cable and the PTT keying line, correct? The keying line should connect from the rig, then to the KAT500, and finally the KPA500. This allows the KAT500 to disable the keying for the KPA500 during tuning or high SWR conditions. It is

Re: [Elecraft] P3 SPAN Instability

I had a problem in which both SPAN and CENTER changed arbitrarily (it seemed) on band changes. I finally saved the configuration using the P3 Utility, reset the P3 to factory parameters (power off, hold LABELS while powering on, wait for 2 seconds, let go of LABELS), and finally used the utility

[Elecraft] P3 SPAN Instability

Various searches dredged up nothing helpful. I recently developed a P3 problem. The SPAN does not get saved. Whenever I change bands to a band I had set it, say, to 50 kHz, the SPAN resets itself to 5 kHz. Sometimes I can even watch the display as it cranks down the bandwidth. This is a P3

Re: [Elecraft] ALC control of W6PQL amp from my K3

Indeed.  Folks who would never think to turn off the AGC in their receivers get weak-kneed at the thought of AGC (ALC) being used in the transmit loop.  In "Fundamentals of SSB", Collins radio speaks of ALC (pp.7-10,11) without any negativity, and in fact calls it a form of speech compression. 

[Elecraft] KPA/KAT500 Mystery Fail

All, I have been using the KPA500/KAT500 combo with an IC-7300 and an IC-7100 for around a year now. They are cabled and configured as per the Elecraft device manuals. The cabling is identical for the two transmitters (actually, I use the same 2 cables for both). All has been working properly

[Elecraft] Where is the 1500 KHz. HPF in the K3/K3s

I understand that a BCB HPF is necessary to protect the PIN diode switches from BCB (Broadcast Band) overload but I can not find it in the K3s schematics. Can anyone tell me which sheet and components make up this filter. I understand that to receive 630M you bypass the HP filter by using the