I tried ALL permutations... SPKR + PH, SPKR - PH, and the Tap 1 to do
the SW+ and SW-... Never left audio.
Just did a resistance comparison be W3FPR suggestion there is an
open in the left channel circuit somewhere OR a bad driver.
Thanks and 73,
__
Clay Autery,
Yep, tried the rear port without the 1/8 x 1/4 TRS adapter... same deal.
I know I can disassemble it and find a bad joint or isolate the inline
conductor break I was just making SURE before I turn the screws on
this STILL IN WARRANTY headset and not gonna do it without the
owner's
I am installing the KSB2 SSB Adapter into my K2 S/N 7809. I have the
Elecraft MH4 microphone, which includes 8 jumpers and one 5.6K resistor.
My KSB2 manual shows the configuration for the Elecraft MH2 and MD2, and
I've read in the MH4 PDF manual that it has the same configuration as the
MH2.
As I recall, there were some original issues with the connector pins
associated with the KPA-3 PA amp. I recall these were later changed
to gold plated pins. Your description seems to indicate the KPA-3 100
watt amp is dropping off line, leaving only the 10 watt driver stage on
line.
73
What power supply are you using for the K3? Have you checked it. I was
using a Powerwerx and the fan had pretty much stopped working and with
FT8 it was getting quite hot after a while it would shut down the K3 and
I saw some other odd things. It took me a while to find the power
supply
Neither do we in Hong Kong. 73 Johnny VR2XMC
從我的 iPhone 傳送
> Oliver Dröse 於 2018年7月25日 00:51 寫道：
>
> Bob is in Germany and Igor in Russia. They do not have the stupid FCC limits.
> ;-)
>
> 73, Olli - DH8BQA
>
>
>
>> Am 24.07.2018 um 17:09 schrieb Paul Baldock :
>>
>> One point to note is
Mike,
I'll bet everything is working OK. The K3 1st IF is at 8.2 MHz [or
so]. The VFO injection is above the recv'd freq on 15, the 3rd harmonic
of that plus the 1st IF comes out to 90 MHz. When I was in FM/TV b'cast
while in college, the FM deviation was +/- 75 KHz for an occupied
Good for Hong Kong, we don’t have such FCC requirements.
73 Johnny VR2XMC
從我的 iPhone 傳送
> Paul Baldock 於 2018年7月24日 23:09 寫道：
>
> One point to note is that your SPE1.3K and the SPE1.5K amplifier I owned for
> a very brief period are illegal 1300W/10W = 130 = 21dB gain.
>
> FCC 97.317 reads:
That was a completely understandable post. If you have trouble with
conversational prose, please reset your ears before you criticize an
experienced operator. Somebody like N7WS doesn't deserve amateurish (not in
the good sense) criticism. -- 73, N3Sz
On Tuesday, July 24, 2018, Wes Stewart
I appreciate all of the input on the amps. Lots of good info and more info
to think about. All of those mentioned are good products and since I have
elecraft products now that adds to my decision. Again, thanks to everyone
and I would like to close this thread. Lots of sub topics that people can
Mike, I have not had this particular problem with my Elecraft rigs, but have
solved similar problems on other equipment. The first question I will ask do
you have resonant antenna for 15 meters. If so often this in itself will
attenuate an FM signal by at least several S units. If you have
On 7/24/2018 12:43 PM, Paul Baldock wrote:
The SPE manuals are specific in saying use ALC to control the power.
In general, doing that is a recipe for high IMD, which means splatter
and clicks.
ALC is fine as "belt and suspenders" protection for the amplifier's
output stage. There are also
Now I wish I understood that. Doesn't anyone write in English anymore? I
suppose I should be relieved that every third word isn't "like."
On 7/24/2018 3:08 PM, Josh Fiden wrote:
TL;DR
Sent from my mobile device
On Jul 24, 2018, at 12:58 PM, Wes Stewart wrote:
I wish I could understand
OK, I will get a bit into this fray before it is closed.
My understanding --
Any *manufactured* amplifier that is sold in the US (by a manufacturer
or distributor) must have 15dB or less gain.
Also there must not be a simple way to modify it to a greater gain.
That is the way I read the FCC
At 03:19 PM 7/24/2018, W8JH wrote:
FWIW as the amps are imported they are NOT capable of greater than 15db gain
and are completely legal.
Well, FWIW I purchased a brand new SPE 1.5K amp from Bob the importer
and distributor. The gain was measured to be around 21dB. As it did
not meet the
On 7/24/2018 9:23 AM, Hisashi T Fujinaka wrote:
I probably want to run anywhere from 100W - 500W out of the KPA1500 for
certain digital modes as well as higher power on other modes.
FWIW, I'm running FT8 at 1400W on 6M with a borrowed KPA1500. Depending
on which wattmeter you believe, it
On 7/24/2018 9:17 AM, j...@kk9a.com wrote:
When I lived near Chicago I heard a mixture of two AM broadcast on 80m
using a 160' high rotating dipole.
I first experienced this in 1953 (before I was licensed) with stations
near me on 930 kHz and 1470 kHz mixed on 3870 (I think). This is nothing
On 7/24/2018 5:12 AM, j...@kk9a.com wrote:
A couple things not mentioned below is that the Flex amp is
SO2R capable and has a higher list price.
Is it being shipped?
73, Jim K9YC
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Elecraft mailing list
Home:
Joe,
I do not know where the info about SPE being dirty comes from. If it is
that bad, then why FCC had approved it?
If it is that bad, how do I manage to use it with two radio on the same
band and spacing of 3-5 kHz using two antennas separated 200 meters?
Last year we had 2 combo of K3
Paul,
Your statement is completely incorrect and unfair. I quote:
"importing and/or selling an illegal amp is illegal. That tells you a lot
about the US rep." The flaw in your logic is simply that they are not
importing illegal amps. This also may be news to you but US hams ARE
allowed to use
TL;DR
Sent from my mobile device
> On Jul 24, 2018, at 12:58 PM, Wes Stewart wrote:
>
> I wish I could understand all of this.
>
>> On 7/24/2018 6:58 AM, Arthur Nienhouse wrote:
>> */I will agree with everything said pasted below but for one thing which is
>> Fan Noise I'm a rag chewer
Do you have the config menu on your K3s item SPKR+PH set to YES or NO?
When I set that config item to YES then the audio to the right headphone is
muted and the speaker works. With NO selected I have audio to both
headphones and the speaker is muted.
I have this config setting set to M1 so that
I have the report. 3rd order IMD ranges from approx 31 to 35db at 1000 watts
output. Not terrible but not spectacular either. I really wish they had tested
it at rated power (1300 watts). I might be very different at that point!
73, Roger
On 7/24/2018 4:03 PM, Joe Subich, W4TV wrote:
On the
This condition has been seen on my K-3 when operating on 6 meters in FT8 mode.
The K-3 will run for about 45-60 minutes in continuous contact mode, then all
of a sudden will shutdown and only transmit 5 watts to the KPA500 amp.The
PA temp menu shows the amp at 35 degrees C. The FT8 mode
For completeness and to close this thread, here is a portion of the
report on the repair of my KAT500 (now in motion and will be here Fri,
about 2.5 week turnaround). Mine is #257, one of the earliest (kit) made.
/*Repair report for KAT500 S/N 0257 RSA # */
*Reported problem(s):*
*
Clay,
On your K3S, did you try plugging into the rear phones jack? You can do
that without any 1/8 inch to 1/4 inch adapter.
The resistance of each earpiece should be easy to check with your
ohmmeter and be revealing if there is a cord problem. The left channel
(tip) should compare with
Thank you all for the replies, I really
appreciate the input.
73,
Gary
KA1J
> I've built a K3 as a kit and added many
> options as a kit so it's not unfamiliar
> territory. That said, what is a reasonable
> amount of time to add a KIO3B Upgrade with
> its three boards?
>
> And other than
Anyone ever had a ProSet two fail to deliver two channel output when
everything is set up correctly (aka bad cable or failed R channel solder
joint at one end or the other)?
My Elmer has a set bought in April of this year and has never been able
to get right channel. I took it today to try
On the other hand, the SPE is no cleaner in Germany or Russia than it is
in the US. SPE is one of the dirtiest amateur amplifiers ever submitted
for FCC approval and the IMD tests were only performed at about 50% of
maximum output power.
73,
... Joe, W4TV
On 2018-07-24 12:51 PM, Oliver
I know SPE have an FCC report saying they meet the 15dB spec, but
that was certainly is not what SPE USA sent me.
When I received my 1.5K it was 21dB gain. I polled a few of the other
new owners and they all reported around 21dB gain. Some 1.3K owners
also reported the same high gain. To be
Dear OMs,
I have both Acom 2000A and SPE Expert 2K-FA amps.The advantage of
the SPE is that it is instant on, operates on six meters, has multiple
antenna inputs and does not generate as much heat in the shack. Its
disadvantages are audible noise which for me is horrific and also I am
The manual for the SPE 1.3K found on the Expert Linears website
indicates that gain is 14.5 dB, and the documentation states that it is
FCC approved.
It is possible that there is an internal attenuator that may be disabled
for amplifiers sold in countries that do not have a gain limit.
The
My experiences are similar to those by Igor.
I use K3 with SPE 2k. Very convenient with 6 antenna connectors with 3
antennas per band. Turns on and off with K3 and follows bands. Antenna
switch and ATU are active with teh amp off. But 2k is heavy and the PS
generates some spurs.
I used KX3 with
You are quite correct, I missed the German part of the call.
I apologize for assuming he was in the US. Same
answer though, in the USA the 23dB gain SPE amps are illegal.
- Paul KW7Y
At 10:03 AM 7/24/2018, Wes Stewart wrote:
Good grief. The man said, "here in Germany."
Quote
> the fan noise is very a subjective
> opinion not right not wrong just is
Yes, but it can be measured in dB(A)..
Vy 73 de OZ1CCM, Kjeld
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
To the best of my knowledge tube amps require less airflow to keep cool.
Therefor less fan noise is to be expected.
I have had an Expert 1k-fa for a period - running 200W RTTY gave me headache
from the fan noise. Now I am running ACOM 2000A 500W without problems.
Vy 73 de OZ1CCM, Kjeld
Good grief. The man said, "here in Germany."
On 7/24/2018 8:14 AM, Paul Baldock wrote:
One point to note is that your SPE1.3K and the SPE1.5K amplifier I owned for a
very brief period are illegal 1300W/10W = 130 = 21dB gain.
FCC 97.317 reads:
(2) Not be capable of amplifying the input RF
I wish I could understand all of this.
On 7/24/2018 6:58 AM, Arthur Nienhouse wrote:
*/I will agree with everything said pasted below but for one thing which is
Fan Noise I'm a rag chewer around 30 wpm QSK the fan will ratchet up to speed
3 after a few minutes of keying so the fan noise is
Bob is in Germany and Igor in Russia. They do not have the stupid FCC limits.
;-)
73, Olli - DH8BQA
> Am 24.07.2018 um 17:09 schrieb Paul Baldock :
>
> One point to note is that your SPE1.3K and the SPE1.5K amplifier I owned for
> a very brief period are illegal 1300W/10W = 130 = 21dB gain.
My KPA1500 SN 307 is up and running and no longer setting off my fire
alarm! :)
This is my first external amp so I guess I have simple questions on
usage. How do you switch the amp on and off and how do you change power
from just using 0-100W on the exciter vs. more power out of the amp?
Just
When I lived near Chicago I heard a mixture of two AM broadcast on 80m
using a 160' high rotating dipole. I assumed that something was rectifying
but I never found the solution. I am curious if you are received this
interference while using bandpass filters.
John KK9A
Mike Wetzel W9RE wrote:
Hi,
Let's do the math. The K3(S) has an IF frequency of 8.215MHz. So when you
listen to, say, 21.4, the synth is generating 21.4 + 8.215 = 29.62MHz.
Multiply this by 3 and add the 8.25.MHz and you get 97.06MHz! The K3's mixer
has a *very* strong response to the 3rd harmonic of the LO since it is
I'm using the SPE 1.3K-FA at present but have a KPA-1500 on order. I like the
idea
of automatically reducing the power out of the K3 to a preset value when the
KPA-1500
is turned on. I also like the idea of having a bit more "headroom". The 1.3K
has a
1db compression point of about 1300 watts
I have had an interference problem on the top part of 15 meters (21380 to
21450) from an FM station 1 mile from my house whose frequency is 97.1Mhz.
It peaks about S6 and is quite noticeable with only coax connected and no
antenna selected. I have (2) -K3 and it is present on both. I installed
One point to note is that your SPE1.3K and the SPE1.5K amplifier I
owned for a very brief period are illegal 1300W/10W = 130 = 21dB gain.
FCC 97.317 reads:
(2) Not be capable of amplifying the input RF power (driving signal)
by more than 15 dB gain. Gain is defined as the ratio of the input RF
One point to note is that your SPE1.3K and the SPE1.5K amplifier I
owned for a very brief period are illegal 1300W/10W = 130 = 21dB gain.
FCC 97.317 reads:
(2) Not be capable of amplifying the input
Hi Gang,
Time to consult the brain trust, because my brain is getting tired .
I am working on this macro string for use in DXLab to set the K3 and P3 for
17M PSK operations.
So, it's designed to:
1. Turn off the VOX
2. Set MODE to DATA, data mode to DATA A
3. Set
I'm like Igor, the SPE 1.3K fulfills my needs and it's one package
including P/S and ATU that I as a 78-year-old can easily lift. My K3 at 10
Watts out drives it to full output!! That's gain!! I have a K3, P3 with
SVGA and the integration with the K3 is a simple cable and coax. SPE even
Larry:
> On Jul 24, 2018, at 8:50 AM, Larry (K8UT) wrote:
>
> The most important difference between the Elecraft KPA1500 and the FlexRadio
> PowerGenius XL is that you can actually buy one of the KPA1500s.
>
> According to the FlexRadio website, the PowerGenius - announced over two
> years
*/I will agree with everything said pasted below but for one thing which
is Fan Noise I'm a rag chewer around 30 wpm QSK the fan will ratchet up
to speed 3 after a few minutes of keying so the fan noise is very a
subjective opinion not right not wrong just is, being fair in my
assessment mine
The most important difference between the Elecraft KPA1500 and the
FlexRadio PowerGenius XL is that you can actually buy one of the
KPA1500s.
According to the FlexRadio website, the PowerGenius - announced over two
years ago - is still just taking reservations.
-larry (K8UT)
--
K7ERQ left EHAM reviews on both, it would be nice if he wrote a
comparison. A couple things not mentioned below is that the Flex amp is
SO2R capable and has a higher list price.
John KK9A
K9MA wrote:
On 7/23/2018 21:37, Gary K9GS wrote:
> Any side by side with the KPA1500 and the Flex Power
On 2018-07-24 12:31 AM, Gary Smith wrote:
I've built a K3 as a kit and added many
options as a kit so it's not unfamiliar
territory. That said, what is a reasonable
amount of time to add a KIO3B Upgrade with
its three boards?
No more than a half hour, probably less. I've
swapped KIO3 board
I have used SPE 1K with my K3 for almost 8 years. I am now using SPE
1.3 with both K3 and KX3 connected for SO2R. No issues with integration
at all (just coax and 3 wire control cable), cheaper then Elecraft,
weight is under 10 Kg even with antenna tuner built in, SO2R with just 1
amp, 4
Yes, Frank. It has been blinking for a million years...or at least for as long
as you have had power on the radio:
Single blink every .5 sec = KX3 off, KXBC3 in ultra low power mode.
Single blink every 2.5 sec = radio is on, KXBC3 normal, not charging batteries.
Single blink every .75 sec =
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