Re: [Elecraft] Love me K3 line

[Greg Miller]

…a KPA1500 is something I would buy in a heartbeat (suppose I would need a 
KAT1500 to go with it).

-Greg NY6C

> On Jan 31, 2016, at 9:56 PM, Ken K6MR  wrote:
> 
> K3KO said:
> 
> “One thing for sure you can't defeat the laws of physics.  1500 W -> 500 
> Watts is a 4.5 dB loss.  That is huge in a pileup.”
> 
> True, and I notice it here when I get beat by other W6s with similar stations 
> other than the amp.  I live with it given the incredible integration of the 
> KPA500: I have the amps in a closet and never touch them. They just work.
> 
> My hope is that Elecraft becomes a giant corporation with enough R&D capital 
> to bring back the KPA1500! Come on guys, buy more stuff!!
> 
> Ken K6MR
> 
> 
> On 2/1/2016 2:39 AM, Phil Wheeler wrote:
>> It might be difficult to find anyone here to disagree with you about the
>> K3 system, Paul :-)
>> 
>> 73, Phil W7OX
>> 
>> On 1/31/16 5:09 PM, Paul VanOveren wrote:
>>> I have worked both S Sandwich and S. Georgia Islands on 4 bands and CW
>>> and
>>> SSB for ATNOs, # 343 and 344 for my DXCC credits. When I sold my Alpha
>>> 374
>>> 3 holer amp and purchased the KPA 500 I was somewhat concerned about the
>>> pwr output difference. However I have worked probably 15 ATNOs since the
>>> switch and have NOT missed working any station that I have wanted to
>>> work.
>>> The P3 w/SVGA added is a great tool, particulary on CW, looking for a
>>> hole
>>> to call in when the DX is listening 5 to 20 Kcs up...
>>> 
>>> NF8J
>>> Paul
>> 
> 
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Re: [Elecraft] SPEAKER FOR K3

[Greg Miller]

I picked up a pair of these - very happy with them:

http://www.monoprice.com/Product/?c_id=115&cp_id=11504&cs_id=1150402&p_id=605300&seq=1&format=1#largeimage
 


-Greg NY6C

> On Jan 28, 2015, at 5:16 PM, Bob Gibson via Elecraft 
>  wrote:
> 
>  What seems to be the best speaker for the k3? I'm using a  A-COM and I am 
> just not happy with the way it sounds.. I know the RX EQ can change the 
> sound! I know I will get all different answers, but at least I can see what 
> everyone may or may not be using.   73s Bob W5RG
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Re: [Elecraft] Diversity reception in the K3

[Greg Miller]

I use diversity receive quite a bit. It was actually the main thing that got me 
looking at a K3 in the first place…great feature.

-Greg NY6C

> On Jan 18, 2015, at 5:48 AM, Ian White  wrote:
> 
> 
> The frequencies of the two receivers in the K3 are locked together for
> diversity by sending identical instructions to the two identical
> synthesizers which also share the same clock oscillator.
> 
> RF phase doesn't need to be coherent for diversity reception as
> implemented in the K3, because the two signals are only combined at
> audio frequency (usually between the operator's ears). There may be
> small difference in time delay (group delay) through the roofing filters
> in the two receivers but in practice this doesn't seem to be a problem.
> 
> 
> 73 from Ian GM3SEK
> 
> 
>> -Original Message-
>> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
>> DaleJ
>> Sent: 18 January 2015 09:28
>> To: Elecraft@mailman.qth.net
>> Subject: [Elecraft] Diversity reception in the K3
>> 
>> Going beyond pushing a button, could someone explain how diversity
>> reception is accomplished in the K3?  How are the two receivers locked
>> together, phase coherently.
>> 
>> Tnx 73
>> Dale, K9VUJ
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Re: [Elecraft] P3 feature request

[Greg Miller]

Note that it only shows up on the P3 itself and not on an external monitor.

-Greg NY6C

On Feb 19, 2014, at 1:36 PM, Alan Bloom  wrote:

> If you enable the menu entry "WfallMkrs" the markers appear on the waterfall.
> 
> Alan N1AL
> 
> 
> On 02/19/2014 12:22 PM, Gary Smith wrote:
>> I would find it helpful if the P3 markers A, B & center could be made
>> to extend below the signal line & into the waterfall; it would help
>> to center on the precise desired location to QSY to rather than
>> guesstimate with the markers being obscured by the spectrum trace on
>> top.
>> 
>> Thank you,
>> 
>> Gary
>> KA1J
>> 
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Re: [Elecraft] New Fair-Rite Clamp-On -- BAD NEWS

[Greg Miller]

I've ordered Fair-Rite clamp on cores (used for RG-213 and equivalent) from 
arrow.com with the part #2631803802 - the picture is not correct but the cores 
that I received were the 'clamp-on' type.

-Greg NY6C

On Jan 9, 2014, at 12:39 PM, Jim Brown  wrote:

> Several months ago, I put together a large group purchase of Fair-Rite cores, 
> including the new part number 2631181381. which the catalog lists as a "Round 
> Cable Snap-It" with an i.d. of 1.4-in, an o.d. of 2.4-in, and 2.5-in long. We 
> were quoted $9.30 for 420 pieces, which is less than half the cost of the 
> five #31 toroids that would be electrically equivalent. Ward, N0AX, saw my 
> announcement on an email reflector and noted it in his Contest Update.
> 
> Turns out that the new part was too good to true.  My delivery arrived last 
> night, and it's not what's listed in two respects. First, there's no clamping 
> assembly. Second, a box that is labeled as containing 30 pieces contains 30 
> HALF cylinders, two of which are required to make a choke, and they must be 
> held in place by tape or ty-wraps. I'm returning the entire shipment for 
> credit.
> 
> Please copy this email to other ham reflectors to which you have access, so 
> that any others who may have ordered these parts that they are NOT as listed 
> in the catalog, and NOT generally useful to us.
> 
> 73, Jim K9YC
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Re: [Elecraft] Noise Cancelling Headphones

[Greg Miller]

I also use the Bose QC2 - awesome headphones.

-Greg NY6C

On Dec 25, 2013, at 3:33 PM, Steve Kercel  wrote:

> I use Bose Quiet Comfort 2 with the K3. Very effective.
> 
> AA4AK
> 
> 
> On 12/25/2013 5:16 PM, Joel Black wrote:
>> I am looking for a pair of noise cancelling headphones.
>> 
>> I have a pair of Sony MDR-V6's that I love, but they do not have noise 
>> cancelling capability and my wife's embroidery machine is severely limiting 
>> my radio operations.
>> 
>> I have already looked at the Yamaha CM500's because they come so highly 
>> recommended on this group. If they're noise cancelling, I cannot find that 
>> information about them.
>> 
>> I want something that will last. The MDR-V6's have lasted at least 10 years 
>> if not longer. I've only had to replace the earpads.
>> 
>> I want something that *covers* my ear *not* something that sits *on* my ear. 
>> Those that sit *on* my ears are uncomfortable after a very short while.
>> 
>> Merry Christmas and 73,
>> 
>> Joel - W4JBB
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Re: [Elecraft] K3: Receive Ant Question

[Greg Miller]

I use this on the RX antenna:

http://www.arraysolutions.com/Products/as_rxfep.htm

...works great.

-Greg NY6C

On Nov 13, 2013, at 3:16 PM, Don Wilhelm  wrote:

> Steve,
> 
> The RX antenna input is protected by a Carrier Operated Relay. Other than 
> that, there is no relay to disconnect the RX input.
> If your TX antenna is sufficiently separated from the RX antenna, there is no 
> problem.
> How much is 'significant' is often a question, and the answer depends on your 
> particular antenna installation.
> If you hear the COR relay operating, yours is not providing sufficient 
> isolation and you should look into an external device (likely a relay will 
> do) to disconnect the RX antenna during transmit.
> 
> 73,
> Don W3FPR
> 
> On 11/13/2013 4:20 PM, Steve, K4FJ wrote:
>> Am I correct in assuming that the Rec Ant input is disconnected from the 
>> main receiver input upon transmit by way of a relay?  If so, can I further 
>> assume that connecting a beverage, or other receive antenna, to the Receive 
>> Ant input will cause no harm to the main receiver upon transmit?  In other 
>> words, is a relay enough protection?
>> 
>> I ask because I would like to rule out needing an external protection device 
>> when using a beverage antenna.  I run full legal power.
>> 
>> 
> 
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Re: [Elecraft] auto-tuner needs more radio output to tune

[Greg Miller]

I have the MFJ-998RT and use it everyday with an Alpha (and my K3). When I 
first got the tuner I tested it in the shack with 20 second key downs at 1.5KW 
into the dummy load. I had the cover off so I could feel how warm it was 
getting - no issues at all. It's been a very good tuner for me. It's best to 
setup the memories for your particular antenna ahead of time before you put the 
cover on and leave it. You can manually tweak the SWR to 'dial it in' and then 
record that setting. In the future it will quickly tune to that spot without 
doing any searching for a match. I've even thought about buying a second one.

-Greg NY6C

On Oct 15, 2013, at 3:24 PM, David Christ  wrote:

> The SGC 230 is well regarded but has serious power limitations.  It is rated 
> at 200 W PEP and only 80 W continuous (RTTY).  The K3 alone can exceed these 
> power limits on RTTY.  And furthermore it is inadequate for use with the 
> KPA500.
> 
> The MFJ-998RT claims to handle the power but the reviews on eHam are much 
> less than glowing.  So it seems that a remote tuner the quality of the KAT500 
> (possibly based on it) would fill a need not currently being met.
> 
> I have severe space limitations so low band dipole and verticals with radials 
> are not an option.  I really need a decent remote tuner
> 
> If Elecraft ever markets such an item you will find me near the front of the 
> line
> 
> David K0LUM
> 
> 
> On Oct 15, 2013, at 3:32 PM, Ron D'Eau Claire wrote:
> 
>> While an Elecraft product would have appeal, the SGC230 fits that bill
>> without batteries and has a long history of reliable operation in very
>> severe environments such as on board ships where it's enveloped in corrosive
>> stack gasses and doused with sea water regularly, baked under tropical suns
>> and frozen with coats of polar ice.
>> 
>> Not much interface needed. IIRC, it tunes when commanded (or SWR exceeds a
>> threshold) and remembers settings. You know it is working because the SWR on
>> the coax is low at the rig, which means it's providing a 50 ohm non-reactive
>> load at the antenna end. 
>> 
>> I worked with a lot of them on ships in the early 1990's where they were
>> used primarily at the base of a 22 foot whip to load it up on the SSB marine
>> distress frequency of 2182 kHz. At 100 watts, that was really pushing them
>> hard because of the very short radiator for that frequency, but they worked
>> FB in that service. 
>> 
>> 73, Ron AC7AC
> 
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