Re: [Elecraft] KX3 Suggested External Battery

[Jim Brown]

On Mon,4/25/2016 10:33 PM, Walter Underwood wrote:

You could carry 9 Ah of non-rechargeable AA’s for less weight (12 oz.) than 3 
Ah of rechargeable LiFePO4.


Yes, BUT -- you can recharge the LiFePO4 batteries 2,000 times. Those 
non-rechargeable batteries can be used only once.


73, Jim K9YC
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Re: [Elecraft] Sherwood's receiver performance table updated

[Alan Bloom]

On 04/25/2016 10:26 PM, Walter Underwood wrote:

Are you confusing a direct conversion receiver with a direct sampling
receiver? A super-het (K3) or direct conversion (KX3) receiver is a
heterodyne system. A direct sampling receiver is not.


It kind-of is.  There has to be some kind of digital local oscillator in 
the electronics following the ADC which is used to heterodyne the signal 
down to baseband or a lower-frequency "IF".  True, it's all done with 
ones and zeros but it performs the same function as an analog local 
oscillator and mixer.


Alan N1AL


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Re: [Elecraft] KX3 Suggested External Battery

[Walter Underwood]

Maybe. The batteries in the boxes are kinda heavy.

For a shorter trip, non-rechargeable lithium AA batteries are great. They are 
very light, about half the weight of NiMH batteries. At 1.5 V, 3000 mAh, and 
0.5 ounces per battery, they have great energy density. A bit pricey, but you 
could buy a lot of them for the cost of one LiFePO4 pack. Eight batteries are 
only four ounces. A similar Bienno  battery is 0.9 pounds (14+ ounces). You 
could carry 9 Ah of non-rechargeable AA’s for less weight (12 oz.) than 3 Ah of 
rechargeable LiFePO4.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Apr 25, 2016, at 10:03 PM, Jim Brown  wrote:
> 
> On Mon,4/25/2016 4:57 PM, TFJM via Elecraft wrote:
>> Any and all feedback would be welcome.
> 
> If you're going to carry it very far, this is what you want.
> 
> https://www.bioennopower.com/collections/12v-series-lifepo4-batteries
> 
> They had a booth at the Visalia convention a week or so ago. Seem like good 
> people. I bought one of their batteries last year.
> 
> 73, Jim K9YC
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Re: [Elecraft] Sherwood's receiver performance table updated

[Walter Underwood]

Are you confusing a direct conversion receiver with a direct sampling receiver? 
A super-het (K3) or direct conversion (KX3) receiver is a heterodyne system. A 
direct sampling receiver is not.

wunder
K6WRU
Walter Underwood
BSEE Rice University, 1981
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Apr 25, 2016, at 9:00 PM, Wes  wrote:
> 
> I'm not smackin' this tar baby except to note that a direct sampling 
> radio*is* a heterodyne radio.
> 
> On 4/25/2016 8:19 PM, Robert Vargas-KP4Y via Elecraft wrote:
>> I agree that comparisons between an heterodyne radio and direct-sampling 
>> radio is not like comparing apples vs apples.
> 
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Re: [Elecraft] KX3 Suggested External Battery

[Jim Brown]

On Mon,4/25/2016 4:57 PM, TFJM via Elecraft wrote:

Any and all feedback would be welcome.


If you're going to carry it very far, this is what you want.

https://www.bioennopower.com/collections/12v-series-lifepo4-batteries

They had a booth at the Visalia convention a week or so ago. Seem like 
good people. I bought one of their batteries last year.


73, Jim K9YC
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Re: [Elecraft] Sherwood's receiver performance table updated

[Jim Brown]

A big advantage of owning an Elecraft radio is that you CAN communicate 
directly with the Owners and Chief Engineer, they will listen to what 
you have to say, and often modify/upgrade their products based on what 
they hear from US!  Try that with ICOM. Or Yaesu. Or Kenwood.


73, Jim K9YC

On Mon,4/25/2016 6:19 PM, EricJ wrote:
The fact that you are having this conversation directly with one of 
the owners/designers of Elecraft and not one of the owners of ICOM is 
always going to make comparisons inherently unfair.


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Re: [Elecraft] Sherwood's receiver performance table updated

[Robert Vargas-KP4Y via Elecraft]

Yep, I agree and I know you understand my point 

73,
Robert-KP4Y/W4

Sent from my iPhone

> On Apr 26, 2016, at 12:00 AM, Wes  wrote:
> 
> I'm not smackin' this tar baby except to note that a direct sampling 
> radio*is* a heterodyne radio.
> 
>> On 4/25/2016 8:19 PM, Robert Vargas-KP4Y via Elecraft wrote:
>> I agree that comparisons between an heterodyne radio and direct-sampling 
>> radio is not like comparing apples vs apples.
> 
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Re: [Elecraft] Sherwood's receiver performance table updated

[Michael Aust]

Interesting Sherwood Receiver Ratings 
http://www.sherweng.com/table.html


Used the following radios at our DX Club station 
( 1st place is K3/P3 by our DX operators )
1st Place --> K3/P3 (upgraded synth) Best NB, Sensitivity and Filtering 
2nd Place --> IC-7851
IC-7300
TS-990S ( Sold it - Terrible NB  )
TS-590S ( Sold it as well ) 


Most preferred Radio for performance is the 
K3/P3 (with upgraded Synth) 


Eric/Wayne you got a great product !


73 Mike








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Re: [Elecraft] Sherwood's receiver performance table updated

[Wes]

I'm not smackin' this tar baby except to note that a direct sampling radio*is* a 
heterodyne radio.


On 4/25/2016 8:19 PM, Robert Vargas-KP4Y via Elecraft wrote:

I agree that comparisons between an heterodyne radio and direct-sampling radio 
is not like comparing apples vs apples.


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Re: [Elecraft] KX3 2m Install

[Bruce Nourish]

Yes, sorry, C180, not C120. Not that I'm complaining, its absence made
assembly easier.

Re: TO-220. If you look at Fig 24 (bottom of p28) in the instructions,
you'll see TO-220 "leaning back" inwards from the side of the case, loosely
held by the nylon screw. My TO-220 looked like that before I inserted the
module -- so far so good.

When I inserted the module, the transistor heat sink went into the gap
between the top of TO-220 and the case. I wiggled it a bit until the hole
in the heat sink, and the top hole of TO-220 approximately lined up. I was
able to screw in the metal Phillips screw fine, so the heat sink should
have a good connection to the case. But TO-220 was still "leaning back",
meaning that the bottom hole of TO-220 was still at an angle. I tried
unscrewing both screws, but the heatsink had wedged TO-220 firmly at that
angle.

Bruce

On Mon, Apr 25, 2016 at 8:17 PM Ron D'Eau Claire  wrote:

> Hi Bruce:
>
> Are talking about C180 near J4? I'll check into it. It won't be the first
> time the engineers made a change and didn't realize it impacted the
> assembly
> instructions (I'm 600 miles from Watsonville, but only milliseconds by
> voice
> and e-mail. Still that can be "light years" at times, Hi!)
>
> I'm not sure what could put the TO-220 screw at an angle. The TO-220 heat
> sink simply slips in between the retainer, which is then pulled tightly
> against the TO-220 heat sink and the side of the case. That's the critical
> part - good mechanical and thermal contact between the TO-220 heat sink and
> the side of the case.
>
> Have you tried loosening both screws and then re-tightening them? What
> comes
> to mind is that in tightening the top screw, the retainer might have turned
> slightly, misaligning the bottom screw in the hole. With everything in
> place. Loosen both screws a bit, then retighten the bottom (nylon) screw to
> hold the retainer, then tighten the top screw and see if things line up
> better.
>
> I'd appreciate hearing if that works either at my address on this message
> or
> r...@elecraft.com.
>
> 73. Ron AC7AC
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
> Bruce
> Nourish
> Sent: Monday, April 25, 2016 5:37 PM
> To: Elecraft Reflector
> Subject: [Elecraft] KX3 2m Install
>
> Hi folks,
>
> Last night I installed and configured a KX3 2m module following the current
> instructions on the website (Rev C). My KX3 is a recent factory build.
> Everything seems to be working fine; I haven't actually tried it on-air yet
> (need to finish my 2m Moxon), but at least I didn't blow my rig up.
>
> I encountered one difference with the instructions: When installing the LO
> coax on J4, I could not find any capacitor C120 to avoid. My KX3 simply
> doesn't have C120 or R81 on that PCB. Has something changed in recent KX3s?
>
> The only hard part was the final installation, specifically clamping the
> heatsink lug properly with retainer TO-220. It seems like the clamping
> arrangement unavoidably puts the nylon bottom screw at a weird angle. I
> double-checked the orientation of TO-220 and redid these steps over several
> times, and couldn't figure out any other way to make it work. Is this
> right?
> If so, a clarification in the instructions would help.
>
> Bruce
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>
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Re: [Elecraft] KX3 Suggested External Battery

[Igor Sokolov]

I use 5500 maH LiFePo4 battery and one 60W foldable solar panel with my KX3 
in the field. It gives me 10W around the clock. The battery is under 1 Kg 
and can be charged with any charger because BMS and protection is all built 
in. The fastest charging time is only 15 minutes with 20A charging current, 
I use 2X 20AH LiFePo4 batteries with pair of 60W foldable solar panels if I 
operate my K3 at 100W. This is also good for around the clock operation on a 
sunny day. These batteries also have BMS built in and do not require 
balancing charger.


73, Igor UA9CDC
- Original Message - 
From: "TFJM via Elecraft" 

To: 
Sent: Tuesday, April 26, 2016 4:57 AM
Subject: [Elecraft] KX3 Suggested External Battery


I'm sure this question has been asked many times. I recently bought a KX3 
so
I'm new at QRP and I'm about to head to a camp ground in a few weeks and 
go

portable. Besides using internal batteries, what longer lasting external
batteries are recommended? I hear of Lipo batteries and a slew of others.
I'm just trying to navigate though the maze of options.

Any and all feedback would be welcome.

73,

Tom / W1PDI



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KX3-Suggested-External-Battery-tp7616683.html

Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Sherwood's receiver performance table updated

[Gary Smith]

Fellas, 

There's so many directions to look at if you want to play Devil's 
Advocate to sliced bread, but is it a good argument? In many ways 
this Icom vs K3s discussion reminds me of someone putting up the 
merits of their 69 VW Bug against a 69 Hemi Roadrunner: Both are 
pretty cars in their own way. Both will likely get you where you're 
going. Both can break the speed limit and both will attract a certain 
crowd. The flower power crowd will probably take the VW Bug. Me, I'd 
want the Roadrunner in my garage.

The analogy is of course, this thread relating to the IC-7300 vs the 
K3s: Both the Icom and the K3s are Ham Radios. Each has many of the 
same kinds of features and both cost more than an average 50" TV, 
while neither costs as much as an 8 day vacation to Bhutan will cost 
you. Both will make contacts to the remotest part of the earth from 
you. Is this thread comparing Apples to Oranges or is it a fair 
comparison of two equal quality Radios?

To me, the obvious answer is this $1,499.95 Icom radio is arguably 
not in the same league as the K3s, and to try to compare them as 
equals is blatantly ungenuine. A fully loaded K3s will cost more 
than, and do more than the IC-7300. The IC-7300 is not a bad radio 
but it's like a High School Basketball star VS Michael Jordan back in 
1995. 

The K3s is made in the USA and has a support staff that speaks 
clearly and can answer about anything you throw at them quickly and 
with respect. Unlike with Icom, you can actually talk with the 
designers of the Radio and president of the company and when you buy 
the radio, you have the privilege of being able to upgrade new 
components, rather than having to sell your old non-upgradable Icom 
and having to buy the next iteration they put out if you want to 
upgrade. Put that in your Icom Pipe & smoke it.

If you want to make a genuine argument of Apples and Apples, then 
compare the K3s fully loaded with P3, to the Icom 7851 which at 
$12,989.95, is double the cost of the K3s with P3. That's a more 
reasonable argument than comparing it to it's kid brother, playing 
basketball in High School.

I'm going back to my rock to make a few Q's with my K3s...

73,

Gary
KA1J
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Re: [Elecraft] Sherwood's receiver performance table updated

[Robert Vargas-KP4Y via Elecraft]

I agree that comparisons between an heterodyne radio and direct-sampling radio 
is not like comparing apples vs apples. Each of these 
philosophies/architectures has has advantages and disadvantages at this time, 
but I'm pretty sure that all future amateur radio transceivers (any radio for 
that matter) will eventually be direct-sampling SDRsSimilar arguments have 
been had in the past (some are still ongoing) about competing technologies such 
as tubes vs. transistor, quartz cristal vs. synthesizers, etc...The difference 
is that direct-sampling SDRs, though a much newer philosophy/architecture, only 
have a few wrinkles that should easily be ironed out as more capable and 
affordable chips (ADCs and DSP) become available.
Honestly, I don't understand these claims about a direct-sampling SDR 
overloading so easily. Is this based on personal experience or theory? Of 
course, I would totally expect this to happen with an SDR kit based upon an 
8-bit ADC. However, I have an Anan SDR (16 bits) and I'm yet to experience 
these issues. Besides this, what percentage of the total amateur radio 
community live near high-power broadcast stations? Does it really make sense to 
engineer products based upon unlikely scenarios that will likely increase 
production costs while diminishing/limiting additional features? I love 
Elecraft products (have or have had all major ones; K3, KX3/PX3/KXPA100, 
KPA500), but have to admit that direct-sampling offers some features that 
Elecraft won't be able to offer with a heterodyne architecture. But, I would 
imagine that Elecraft already has a direct-sampling SDR on the drawing board 
and this is exciting because I know that it'll beat anything that is in the 
market right now.
73,Robert-KP4Y/W4       

On Monday, April 25, 2016 9:40 PM, Clay Autery  wrote:
 

 I know next to nothing about radios, but here's my $0.02 anyway...

1) My K3s/P3 combo is the first purchase in 20 years or more that I've
had absolutely NO buyer's remorse... not even a hint, nada, none...
2) My K3s makes me WANT to become the best operator I can... This arrow
is wayyy better than the Indian right now and for the forseeable future.
3) NO ONE has ever made a single comment to me negative about the K3s or
Elecraft...
4) I consistently get comments on my signal from my QSOs that it is
clean, super, fills the room, full, broadcast quality, etc, etc, et
al...  and I'm only 100w on a loop.
5) NO ONE at Yaesu, Icomm, or Kenwood ever called me to help me figure
out what I needed when I was ready to order.
6) Elecraft is USA...    ;-)

__
Clay Autery, KG5LKV
MONTAC Enterprises
(318) 518-1389

On 4/25/2016 6:08 PM, Wayne Burdick wrote:
>> Jim Brown  wrote:
>>
>>> On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:
>>> Wow, looks like Icom finally made a radio with performance close to the
>>> humble K3S and K3 + new synth but also looks like you really got to pay
>>> 'em for finally doing it, at nearly 13 grand for the 7851!
>> Don't be so quick to declare either of these products winners -- Rob's RX 
>> measurements are only a small part of what defines the quality of a radio. 
>> ICOM (and Yaesu) have a long history of producing radios with rather wide CW 
>> signals, including all the current products that ARRL has measured.
> Hi Jim,
>
> Also, in the "you get what you pay for" category, here are the K3S features 
> (some optional*) that differ significantly from, or are not available on, the 
> IC-7300:
>
> Receive
>
>    - *Sub receiver (identical in performance to main), diversity and 
>independent-band operation
>    - Dedicated AF and RF gain controls for both receivers
>    - APF (CW audio peaking filter)
>    - 8-band RX EQ
>    - Full stereo audio with audio effects (AFX) and L/R balance control 
>    - User-settable AF limiter for use when AGC is off
>    - 7 AGC customization controls
>
> Transmit
>
>    - PIN-diode T/R switching (audible relay on '7300)
>    - Extremely fast T/R turnaround (as low as 5 ms in QRQ mode; also applies 
>to KPA500)
>    - Dedicated controls for CW code speed/mic gain, compression/power level
>    - 8-band TX EQ
>
> General
>
>    - *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna 
>jacks
>    - *Internal all-mode 2-meter transverter option
>    - Direct transverter band displays (9); integrated with Elecraft XV-series
>    - Built-in PSK and RTTY decode (to display) and encode (via keyer paddle);
>      7300 has only RTTY, I believe
>    - Dedicated VFO B and RIT/XIT offset controls (VFO B is 400-count optical 
>encoder
>      with weighted knob)
>    - 100 regular memories, plus 4 quick memories per band
>    - 10 user-programmable function switches (for menu hot-keys, macros, TX 
>messages)
>    - Direct rotary control functions: K3 11; 7300 6
>    - Direct switch functions: K3, 74 (addional 22 on P3*); 7300, 27 
>        (IC-7300 also has est. 10 full-time touch controls in 

Re: [Elecraft] KX3 2m Install

[Ron D'Eau Claire]

Hi Bruce:

Are talking about C180 near J4? I'll check into it. It won't be the first
time the engineers made a change and didn't realize it impacted the assembly
instructions (I'm 600 miles from Watsonville, but only milliseconds by voice
and e-mail. Still that can be "light years" at times, Hi!) 

I'm not sure what could put the TO-220 screw at an angle. The TO-220 heat
sink simply slips in between the retainer, which is then pulled tightly
against the TO-220 heat sink and the side of the case. That's the critical
part - good mechanical and thermal contact between the TO-220 heat sink and
the side of the case. 

Have you tried loosening both screws and then re-tightening them? What comes
to mind is that in tightening the top screw, the retainer might have turned
slightly, misaligning the bottom screw in the hole. With everything in
place. Loosen both screws a bit, then retighten the bottom (nylon) screw to
hold the retainer, then tighten the top screw and see if things line up
better. 

I'd appreciate hearing if that works either at my address on this message or
r...@elecraft.com. 

73. Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce
Nourish
Sent: Monday, April 25, 2016 5:37 PM
To: Elecraft Reflector
Subject: [Elecraft] KX3 2m Install

Hi folks,

Last night I installed and configured a KX3 2m module following the current
instructions on the website (Rev C). My KX3 is a recent factory build.
Everything seems to be working fine; I haven't actually tried it on-air yet
(need to finish my 2m Moxon), but at least I didn't blow my rig up.

I encountered one difference with the instructions: When installing the LO
coax on J4, I could not find any capacitor C120 to avoid. My KX3 simply
doesn't have C120 or R81 on that PCB. Has something changed in recent KX3s?

The only hard part was the final installation, specifically clamping the
heatsink lug properly with retainer TO-220. It seems like the clamping
arrangement unavoidably puts the nylon bottom screw at a weird angle. I
double-checked the orientation of TO-220 and redid these steps over several
times, and couldn't figure out any other way to make it work. Is this right?
If so, a clarification in the instructions would help.

Bruce
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Re: [Elecraft] K3: Main RX gone deaf

[Ionut Pitu via Elecraft]

Then you should check also D25 from the RF board.The easiest way to find out 
the problem is to inject signal at different point in the rx chain and see 
where it stops working, or where it starts working,hi!
Good luck!BobYO8RNI

  From: Udo Langenohl - DK5YA 
 To: Jerry ; Graham g3tct  
Cc: Elecraft@mailman.qth.net
 Sent: Monday, April 25, 2016 11:02 PM
 Subject: Re: [Elecraft] K3: Main RX gone deaf
   
Gentleman,

thanks for all so many replies. Will try to check all ideas tomorrow, 
XYL permitting ... ;-).

73 Udo, DK5YA

P.S.: The issue occurs at the RX IN and TVTR IN ports of the KXV3A too.

Am 25.04.2016 um 17:57 schrieb Jerry:
> Reseat the internal coax jumpers in the surf signal path.
>
> Sent from my iPad
>
>> On Apr 25, 2016, at 11:52 AM, Graham g3tct  wrote:
>>
>> Hi Udo
>> Before you start tearing the rig apart, two ideas:-
>>
>> -is there a big difference for weak signals of say S4?
>> -if not, it may just be the S meter calibration that needs attention.
>> -if so, preamp on for either? Att on for main?
>>
>> HTH
>> Graham
>>
>>> On 19:59, Udo Langenohl - DK5YA wrote:
>>> Gentleman,
>>>
>>> I'm struggling with a Main RX vs. Sub RX issue. My Main RX is rather deaf 
>>> compared to the Sub RX. I see at least 23.5dB attenuation between Main RX 
>>> and Sub RX when comparing highly stable signals from my signal generator 
>>> (HP8664A). This is only for ANT1/2 vs. AUX-IN!
>>> Example:
>>> -33dBm on 28.500
>>> into AUX-IN (SUB RX): exactly 59 +40dB
>>> into ANT 1 (Main RX): 59 +15dB
>>> into ANT 2 (Main RX): 59 +15dB
>>>
>>> I've checked all the usual suspects (pin diodes):
>>> D1 and D5 on the KXV3A: o.k.
>>> Each and every pin diode on the SUB IN board: o.k.
>>> D5 on the Main RX board: o.k.
>>>
>>> This is a K3 #59xx with almost everything inside money can buy.
>>>
>>> My second K3 (serial #39xx) does not show this strange behavior. Main RX 
>>> and SUB RX show exactly the same values on ANT1/2 and AUX IN. -33dBm is 
>>> 59+40 on MAIN and SUB RX, no matter if Ant1, 2 or AUX IN.
>>>
>>> Any idea? I'm searching for weeks now and I'm close to give up.
>>>
>>> Udo, DK5YA
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-- 
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http://www.palekastro.de/       [owner] *
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Re: [Elecraft] Sherwood's receiver performance table updated

[lstavenhagen]

Yes, quite true. But it is a little hilarious that the only other Icom rig
above its own 7300 in the Sherwood chart costs 13 grand At least in the
fairly narrow comparison domain of RX dynamic range anyway; to me that's
just kind of funny that their high end rigs are outperformed by their own
entry/mid level rig.

But yes you make a good point in that it's the overall package that really
counts and you always have your compromises that you need to make to hit a
particular performance level or price point or both...

After looking at them all, though, my K3S still edges out everything else
I've looked at in the bang/buck ratio department, so that's what I went
with. But of course my needs are kind of specific - the hottest possible RX,
brick wall filtering CW a first-class citizen among the supported modes and
built for /p operation. 

If I worked voice or digital modes in addition, or didn't have /p
requirements, maybe the calculus would have had other players in it. 

When I threw in kit building fun/learning, the K2 actually edged out all of
them. That's why I built 2 of them lol.

73,
LS
W5QD



Jim Brown-10 wrote
> Don't be so quick to declare either of these products winners -- Rob's 
> RX measurements are only a small part of what defines the quality of a 
> radio. ICOM (and Yaesu) have a long history of producing radios with 
> rather wide CW signals, including all the current products that ARRL has 
> measured.
> 
> 73, Jim K9YC
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Re: [Elecraft] Sherwood's receiver performance table updated

[Clay Autery]

I know next to nothing about radios, but here's my $0.02 anyway...

1) My K3s/P3 combo is the first purchase in 20 years or more that I've
had absolutely NO buyer's remorse... not even a hint, nada, none...
2) My K3s makes me WANT to become the best operator I can... This arrow
is wayyy better than the Indian right now and for the forseeable future.
3) NO ONE has ever made a single comment to me negative about the K3s or
Elecraft...
4) I consistently get comments on my signal from my QSOs that it is
clean, super, fills the room, full, broadcast quality, etc, etc, et
al...  and I'm only 100w on a loop.
5) NO ONE at Yaesu, Icomm, or Kenwood ever called me to help me figure
out what I needed when I was ready to order.
6) Elecraft is USA...;-)

__
Clay Autery, KG5LKV
MONTAC Enterprises
(318) 518-1389

On 4/25/2016 6:08 PM, Wayne Burdick wrote:
>> Jim Brown  wrote:
>>
>>> On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:
>>> Wow, looks like Icom finally made a radio with performance close to the
>>> humble K3S and K3 + new synth but also looks like you really got to pay
>>> 'em for finally doing it, at nearly 13 grand for the 7851!
>> Don't be so quick to declare either of these products winners -- Rob's RX 
>> measurements are only a small part of what defines the quality of a radio. 
>> ICOM (and Yaesu) have a long history of producing radios with rather wide CW 
>> signals, including all the current products that ARRL has measured.
> Hi Jim,
>
> Also, in the "you get what you pay for" category, here are the K3S features 
> (some optional*) that differ significantly from, or are not available on, the 
> IC-7300:
>
> Receive
>
>- *Sub receiver (identical in performance to main), diversity and 
> independent-band operation
>- Dedicated AF and RF gain controls for both receivers
>- APF (CW audio peaking filter)
>- 8-band RX EQ
>- Full stereo audio with audio effects (AFX) and L/R balance control 
>- User-settable AF limiter for use when AGC is off
>- 7 AGC customization controls
>
> Transmit
>
>- PIN-diode T/R switching (audible relay on '7300)
>- Extremely fast T/R turnaround (as low as 5 ms in QRQ mode; also applies 
> to KPA500)
>- Dedicated controls for CW code speed/mic gain, compression/power level
>- 8-band TX EQ
>
> General
>
>- *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna 
> jacks
>- *Internal all-mode 2-meter transverter option
>- Direct transverter band displays (9); integrated with Elecraft XV-series
>- Built-in PSK and RTTY decode (to display) and encode (via keyer paddle);
>  7300 has only RTTY, I believe
>- Dedicated VFO B and RIT/XIT offset controls (VFO B is 400-count optical 
> encoder
>  with weighted knob)
>- 100 regular memories, plus 4 quick memories per band
>- 10 user-programmable function switches (for menu hot-keys, macros, TX 
> messages)
>- Direct rotary control functions: K3 11; 7300 6
>- Direct switch functions: K3, 74 (addional 22 on P3*); 7300, 27 
> (IC-7300 also has est. 10 full-time touch controls in main display 
> context)
>- Keypad for direct frequency entry
>- Transflective LCD, easily readable in bright sunlight 
>- Low current drain for portable/DXpedition use (1 amp typical)
>- Works with supply voltage of as low as 10 V
>- Carrying handle included
>- *High-quality/versatile external control panel option (K-Pod)
>
> Connectivity
>
>- RX antenna in/out and transverter in/out jacks
>- Stereo speaker outputs, front and rear headphones, front and rear mics
>- Analog line in/out in addition to USB (digital + audio)
>- Buffered I.F. output
>- Accessory output for compatibility with existing station equipment,
>  including band-data outputs and user-defined logic in/out
>- 12-volt switched output for powering accessories
>
> Spectrum Display*
>
> - dedicated panadapter screen (P3) with significantly larger area
> - flexible partitioning of spectrum vs waterfall
> - *optional high-resolution, external SVGA display
>
> Any corrections or things I've missed?
>
> Wayne
> N6KR
>
>
>
>
>
>
>
>
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Re: [Elecraft] Sherwood's receiver performance table updated

[EricJ]

The fact that you are having this conversation directly with one of the 
owners/designers of Elecraft and not one of the owners of ICOM is always 
going to make comparisons inherently unfair.


Eric

KE6US

On 4/25/2016 4:58 PM, Harry White wrote:

Wayne,

Yes, you missed one thing, the price. I added all the items up that would
have to be added to a factory build K3s so that it could do everything you
claimed and everything the IC-7300 can do. Without shipping costs the K3s
radio prices out at $5469.65, more than three and a half times the cost of
an IC-7300. And everyone is offering free shipping on the IC-7300. And that
price does not include any additional filters in the K3s.

Just trying to be fair.

73,

Harry
K1RSA

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Monday, April 25, 2016 7:09 PM
To: j...@audiosystemsgroup.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


Jim Brown  wrote:


On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:
Wow, looks like Icom finally made a radio with performance close to
the humble K3S and K3 + new synth but also looks like you really
got to pay 'em for finally doing it, at nearly 13 grand for the 7851!

Don't be so quick to declare either of these products winners -- Rob's RX

measurements are only a small part of what defines the quality of a radio.
ICOM (and Yaesu) have a long history of producing radios with rather wide CW
signals, including all the current products that ARRL has measured.

Hi Jim,

Also, in the "you get what you pay for" category, here are the K3S features
(some optional*) that differ significantly from, or are not available on,
the IC-7300:

Receive

- *Sub receiver (identical in performance to main), diversity and
independent-band operation
- Dedicated AF and RF gain controls for both receivers
- APF (CW audio peaking filter)
- 8-band RX EQ
- Full stereo audio with audio effects (AFX) and L/R balance control
- User-settable AF limiter for use when AGC is off
- 7 AGC customization controls

Transmit

- PIN-diode T/R switching (audible relay on '7300)
- Extremely fast T/R turnaround (as low as 5 ms in QRQ mode; also applies
to KPA500)
- Dedicated controls for CW code speed/mic gain, compression/power level
- 8-band TX EQ

General

- *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna
jacks
- *Internal all-mode 2-meter transverter option
- Direct transverter band displays (9); integrated with Elecraft
XV-series
- Built-in PSK and RTTY decode (to display) and encode (via keyer
paddle);
  7300 has only RTTY, I believe
- Dedicated VFO B and RIT/XIT offset controls (VFO B is 400-count optical
encoder
  with weighted knob)
- 100 regular memories, plus 4 quick memories per band
- 10 user-programmable function switches (for menu hot-keys, macros, TX
messages)
- Direct rotary control functions: K3 11; 7300 6
- Direct switch functions: K3, 74 (addional 22 on P3*); 7300, 27
 (IC-7300 also has est. 10 full-time touch controls in main display
context)
- Keypad for direct frequency entry
- Transflective LCD, easily readable in bright sunlight
- Low current drain for portable/DXpedition use (1 amp typical)
- Works with supply voltage of as low as 10 V
- Carrying handle included
- *High-quality/versatile external control panel option (K-Pod)

Connectivity

- RX antenna in/out and transverter in/out jacks
- Stereo speaker outputs, front and rear headphones, front and rear mics
- Analog line in/out in addition to USB (digital + audio)
- Buffered I.F. output
- Accessory output for compatibility with existing station equipment,
  including band-data outputs and user-defined logic in/out
- 12-volt switched output for powering accessories

Spectrum Display*

 - dedicated panadapter screen (P3) with significantly larger area
 - flexible partitioning of spectrum vs waterfall
 - *optional high-resolution, external SVGA display

Any corrections or things I've missed?

Wayne
N6KR








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[Elecraft] KX3 2m Install

[Bruce Nourish]

Hi folks,

Last night I installed and configured a KX3 2m module following the current
instructions on the website (Rev C). My KX3 is a recent factory build.
Everything seems to be working fine; I haven't actually tried it on-air yet
(need to finish my 2m Moxon), but at least I didn't blow my rig up.

I encountered one difference with the instructions: When installing the LO
coax on J4, I could not find any capacitor C120 to avoid. My KX3 simply
doesn't have C120 or R81 on that PCB. Has something changed in recent KX3s?

The only hard part was the final installation, specifically clamping the
heatsink lug properly with retainer TO-220. It seems like the clamping
arrangement unavoidably puts the nylon bottom screw at a weird angle. I
double-checked the orientation of TO-220 and redid these steps over several
times, and couldn't figure out any other way to make it work. Is this right? If
so, a clarification in the instructions would help.

Bruce
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Re: [Elecraft] KX3 Suggested External Battery

[Don Wilhelm]

Tom,

Consider cost vs. need and your intended power level.
If you are backpacking in, then weight is a consideration, so LiPo and 
LiFePO4 batteries are to be preferred.  IMHO, LiFePo4 are preferred 
because they have terminal voltages similar to NiMH ot NiCad batteries 
and the charging requirements are not as severe (and safety oriented) as 
LiPo.  LiPo batteries need special chargers to insure safety during 
charging.


If you don't mind the weight of lead acid batteries, then the low cost 
alternative is a "lawn mower" battery, or if spillage of the electrolyte 
might be a problem, look at AGM or SLA batteries. That is old battery 
technology, but it works and is the lesser expensive solution.


An almost zero cost solution is to run heavy gauge wires from your 
vehicle battery.  Just make sure there is enough energy left to start 
your vehicle when you are ready to break camp.


73,
Don W3FPR

On 4/25/2016 7:57 PM, TFJM via Elecraft wrote:

I'm sure this question has been asked many times. I recently bought a KX3 so
I'm new at QRP and I'm about to head to a camp ground in a few weeks and go
portable. Besides using internal batteries, what longer lasting external
batteries are recommended? I hear of Lipo batteries and a slew of others.
I'm just trying to navigate though the maze of options.




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Re: [Elecraft] KX3 Suggested External Battery

[Bill Frantz]

Almost any power supply capable of 9 to 15 volts at 2-4 amps. 
Any family of batteries in that range will work. I use AGM lead 
acid batteries for field day. I have a lithium family battery 
for backpacking.


To calculate how much capacity (amp-hours) you need, measure the 
current draw on receive and transmit. Then figure out what your 
transmit/receive duty cycle will be and the time you will be 
operating to calculate the number of amp-hours you will need. 
Then double that because batteries don't like to be drained dead 
and you need a margin of safety.


73 Bill AE6JV

On 4/25/16 at 4:57 PM, elecraft@mailman.qth.net (TFJM via 
Elecraft) wrote:



I'm sure this question has been asked many times. I recently bought a KX3 so
I'm new at QRP and I'm about to head to a camp ground in a few weeks and go
portable. Besides using internal batteries, what longer lasting external
batteries are recommended? I hear of Lipo batteries and a slew of others.
I'm just trying to navigate though the maze of options.

Any and all feedback would be welcome.


---
Bill Frantz| If you want total security, go to prison. 
There you're
408-356-8506   | fed, clothed, given medical care and so on. 
The only

www.pwpconsult.com | thing lacking is freedom. - Dwight D. Eisenhower

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Re: [Elecraft] Sherwood's receiver performance table updated

[Joe Subich, W4TV]

Firstly, the K3/K3S (without the second receiver) cannot be on more
than ONE amateur band at a time. So, why create an artificial "test"
that the typical K3 can't even do?


Because that is *exactly* what Flex (and others) promotes - multiple
"slice receivers" anywhere from 1 to 54 MHz.


Secondly, I wonder how good the K3/K3S would be if you also pulled
their front-end filtering?


It's not an issue because the filtering is built in - unlike the Flex
6300 that has *no* preselector/bandpass filters.

> 14-bit ADCs aren't showing this problem here, even without
> the HPF.

I have an AM site (two transmitters about 5 miles away) that puts
more than 2 mW into the reverse port of my microHAM SMORF vector
Wattmeter when I use my 160/80/40/30 trapped inverted V during the
daytime.  Even after the K3 T/R switch and KBPF3, I see at least
two signals higher greater than -20 dBm on the P3 and more than a
dozen at -30 dBm or more.

Another individual in rural Colorado reports 15 signals > -30 dBm
on his 160/80 meter Marconi T that makes an unfiltered 14 bit ADC
direct sampling transceiver unusable on 160 and 80 meters.  In his
case it required 22 dB of attenuation plus an ICE 402 1.8 MHz HPF
to "clean up" the broadcast intermod.  Now maybe an MDS of -100 dBm
works on 160 but it certainly isn't going to work on the high bands.

73,

   ... Joe, W4TV


On 4/25/2016 6:17 PM, wb4...@knology.net wrote:

While I don't disagree with the possibility of your first paragraph Joe,
your third one doesn't make a lot of sense to me.

Firstly, the K3/K3S (without the second receiver) cannot be on more than
ONE amateur band at a time.  So, why create an artificial "test" that
the typical K3 can't even do?  I believe that most K3/K3S out there
don't have the second receiver.  Plus, the K3/K3S cannot listen to three
(or more) bands at once, which the 6500 and 6700 can.

Secondly, I wonder how good the K3/K3S would be if you also pulled their
front-end filtering?

I'm still very much an Elecraft fan with both a K3 and a KX3, so I'm not
disparaging the Elecraft equipment at all.  I LOVE THEM!  I just want
apples vs apples, please.

BTW, I have an AM station within a couple of miles - directly
line-of-sight down the river, and I don't see this alleged problem at
all.  But, I'm only using dipoles, a Steppir vertical, or a 50-ohm
resistor for antennas. Hi Hi. I do see this problem with several 8- or
12-bit SDR designs without high-pass filtering, but with a filter, it
goes away.  14-bit ADCs aren't showing this problem here, even without
the HPF.
73, Terry, N4TLF




-Original Message- From: Joe Subich, W4TV
Sent: Monday, April 25, 2016 5:30 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


On 4/25/2016 4:44 PM, Dave Hachadorian wrote:

It's interesting that the 7300's ranking in the table is because of its
94 dB Dynamic Range at 2 KHz spacing.  But the footnotes indicate that
this dynamic range is with AP+ turned ON.  With AP+ ON, minimum
detectable signal is degraded by 11 dB.


That's true of *every* direct sampling SDR in the list.  That's the
"dirty little secret" of direct sampling SDRs ... in order to maintain
that "pristine" IMD DR the "total signal level" or instantaneous peak
voltage at the ADC must stay below the clipping/overflow level.

Look at the ARRL review of the Flex 6700 and 6300 ... compare their
MDS with the preamps on and preamps off, then look at the IMD DR
with the preamps on and off (where the data is available).  Even for
the Flex, MDS is degraded by 10 to 15 dB in order to maintain the full
dynamic range (not much different than the 7300).

Direct sampling disciples will claim the MDS reduction is not a problem
but try running one of their radios within a couple miles of an AM
station with "slice receivers" on more than one amateur band (so the
preselector/bandpass filters are bypassed).

73,

  ... Joe, W4TV



With AP+ OFF, as generally recommended in the footnotes, 2 KHz dynamic
range is only 81 dB, which would place the 7300 considerably lower in
the table, but still pretty good.

Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- From: Joe Subich, W4TV
Sent: Monday, April 25, 2016 11:55 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


Very interesting ... pretty good performance from the IC-7300 for an
"entry level radio."  On the other hand, the IC-9100 should be better
than "mid pack" given it's recent design and price - it's even *worse*
(both IMD and LO Noise) that that paragon of "high performance," the
IC-706mkIIg!

73,

   ... Joe, W4TV

On 4/25/2016 10:55 AM, Wayne Burdick wrote:

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:

http://www.sherweng.com/table.html

73,
Wayne
N6KR


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Re: [Elecraft] KX3 Suggested External Battery

[Mel Farrer via Elecraft]

It really depends on your mode of operation.  The internal batteries do a great 
short term op.  5 to 10 AHR batteries go longer,  Same with solar panels will 
let you do daytime and most of the night.  Of course depending on the operating 
mode.
I use a 10 AHR Life type with a 27 W folded solar panel and have never ran out 
of SSB power.  Have fun.  

Mel, K6KBE


  From: TFJM via Elecraft 
 To: elecraft@mailman.qth.net 
 Sent: Monday, April 25, 2016 4:57 PM
 Subject: [Elecraft] KX3 Suggested External Battery
   
I'm sure this question has been asked many times. I recently bought a KX3 so
I'm new at QRP and I'm about to head to a camp ground in a few weeks and go
portable. Besides using internal batteries, what longer lasting external
batteries are recommended? I hear of Lipo batteries and a slew of others.
I'm just trying to navigate though the maze of options.

Any and all feedback would be welcome.

73,

Tom / W1PDI



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Re: [Elecraft] Sherwood's receiver performance table updated

[Ray Sills]

HI Gary:

One aspect of the KX3 is that you can get a bare-bones version… at $900.. and 
you would have a very functional portable QRP rig.  And, as finances permit, 
you can add the options.  That way you don’t have to pony up the entire $3K at 
one time.

And, even with the bare bones kit, you’d still have the latest firmware at the 
time of production, and a quite capable multi-mode, multi-band transceiver.

73 de Ray
K2ULR
KX3#211


> On Apr 25, 2016, at 5:21 PM, NC3Z Gary  wrote:
> 
> True a fully kitted KX3 station will be about $3000, but the KX3 is 
> really a different animal. There is a lot of flexibility with a KX3 
> station. For emergency power operation the KX3 draws a lot less power on 
> receive.
> 
> One key feature is Elecraft themselves, somewhat regular firmware (and 
> hardware) updates that improve performance and add features, and all 
> this on a product that may be several years old. Other radio 
> manufacturers are notorious for not providing updates after a relatively 
> short period of time.
> 
> 
> 
> Gary Mitchelson
> NC3Z/4 Pamlico County, NC FM15
> 

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[Elecraft] KX3 / KXPA per band power?

[Tom]

Hi,
Is there an option somewhere to enable the KX3 to have different power levels 
per band?  This would be very useful if you are driving a big amp via the 
KXPA100.
Is this planned for a future firmware update?
Thanks, Tom
va2fsq.com

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Re: [Elecraft] Sherwood's receiver performance table updated

[Harry White]

Wayne,

Yes, you missed one thing, the price. I added all the items up that would
have to be added to a factory build K3s so that it could do everything you
claimed and everything the IC-7300 can do. Without shipping costs the K3s
radio prices out at $5469.65, more than three and a half times the cost of
an IC-7300. And everyone is offering free shipping on the IC-7300. And that
price does not include any additional filters in the K3s.

Just trying to be fair.

73,

Harry
K1RSA

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Monday, April 25, 2016 7:09 PM
To: j...@audiosystemsgroup.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated

> Jim Brown  wrote:
> 
>> On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:
>> Wow, looks like Icom finally made a radio with performance close to 
>> the humble K3S and K3 + new synth but also looks like you really 
>> got to pay 'em for finally doing it, at nearly 13 grand for the 7851!
> 
> Don't be so quick to declare either of these products winners -- Rob's RX
measurements are only a small part of what defines the quality of a radio.
ICOM (and Yaesu) have a long history of producing radios with rather wide CW
signals, including all the current products that ARRL has measured.

Hi Jim,

Also, in the "you get what you pay for" category, here are the K3S features
(some optional*) that differ significantly from, or are not available on,
the IC-7300:

Receive

   - *Sub receiver (identical in performance to main), diversity and
independent-band operation
   - Dedicated AF and RF gain controls for both receivers
   - APF (CW audio peaking filter)
   - 8-band RX EQ
   - Full stereo audio with audio effects (AFX) and L/R balance control 
   - User-settable AF limiter for use when AGC is off
   - 7 AGC customization controls

Transmit

   - PIN-diode T/R switching (audible relay on '7300)
   - Extremely fast T/R turnaround (as low as 5 ms in QRQ mode; also applies
to KPA500)
   - Dedicated controls for CW code speed/mic gain, compression/power level
   - 8-band TX EQ

General

   - *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna
jacks
   - *Internal all-mode 2-meter transverter option
   - Direct transverter band displays (9); integrated with Elecraft
XV-series
   - Built-in PSK and RTTY decode (to display) and encode (via keyer
paddle);
 7300 has only RTTY, I believe
   - Dedicated VFO B and RIT/XIT offset controls (VFO B is 400-count optical
encoder
 with weighted knob)
   - 100 regular memories, plus 4 quick memories per band
   - 10 user-programmable function switches (for menu hot-keys, macros, TX
messages)
   - Direct rotary control functions: K3 11; 7300 6
   - Direct switch functions: K3, 74 (addional 22 on P3*); 7300, 27 
(IC-7300 also has est. 10 full-time touch controls in main display
context)
   - Keypad for direct frequency entry
   - Transflective LCD, easily readable in bright sunlight 
   - Low current drain for portable/DXpedition use (1 amp typical)
   - Works with supply voltage of as low as 10 V
   - Carrying handle included
   - *High-quality/versatile external control panel option (K-Pod)

Connectivity

   - RX antenna in/out and transverter in/out jacks
   - Stereo speaker outputs, front and rear headphones, front and rear mics
   - Analog line in/out in addition to USB (digital + audio)
   - Buffered I.F. output
   - Accessory output for compatibility with existing station equipment,
 including band-data outputs and user-defined logic in/out
   - 12-volt switched output for powering accessories

Spectrum Display*

- dedicated panadapter screen (P3) with significantly larger area
- flexible partitioning of spectrum vs waterfall
- *optional high-resolution, external SVGA display

Any corrections or things I've missed?

Wayne
N6KR








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[Elecraft] KX3 Suggested External Battery

[TFJM via Elecraft]

I'm sure this question has been asked many times. I recently bought a KX3 so
I'm new at QRP and I'm about to head to a camp ground in a few weeks and go
portable. Besides using internal batteries, what longer lasting external
batteries are recommended? I hear of Lipo batteries and a slew of others.
I'm just trying to navigate though the maze of options.

Any and all feedback would be welcome.

73,

Tom / W1PDI



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Re: [Elecraft] Sherwood's receiver performance table updated

[Don Wilhelm]

Wunder,

The only reason I can understand is that they can get away by stating 
that they have an internal ATU.  Sadly many hams (particularly newer 
hams) gloss over the significance of the need for a wide range ATU.  
They don't discover that they need an external tuner for their 
"multiband" antenna until after they buy the transceiver and discover 
that it is inadequate.


73,
Don W3FPR

On 4/25/2016 7:25 PM, Walter Underwood wrote:

On Apr 25, 2016, at 4:08 PM, Wayne Burdick  wrote:

   - *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna 
jacks

I am really mystified about why transceivers include a 3:1 range ATU. It adds 
$150-200 to the end cost to get an external ATU. It might add $50-75 to make 
the internal ATU wide-range. It is especially odd for an entry-level rig, where 
people are likely to be using a low-slung dipole. OK, it is very strange for 
the IC-7851, too.




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Re: [Elecraft] KX3 Memory Question

[Larry D. Warner]

Don,

Thank you.  I figured it saved more than frequency.  But, what I am looking
for is a list of all the settings that are saved.  I want to know what the
"several other settings" are.

Regards,

Larry
KG7ZSB

You cannot live a perfect day without doing something for someone who will
never be able to repay you.
-- John Wooden

-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Monday, April 25, 2016 3:49 PM
To: Larry D. Warner ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 Memory Question

Larry,

The memory will contain not only the frequency, but the mode and several
other settings, such as filter settings, Preamp/Attenuator, etc.
What is saved should be sufficient to restore most of the parameters to the
state it was when you saved to that memory.

73,
Don W3FPR

On 4/25/2016 5:42 PM, Larry D. Warner wrote:
> I have asked supp...@elecraft.com   this 
> question more than once and have not received an answer.  Maybe the 
> group knows.  When I save a frequency to memory in my KX3, what all is 
> saved?  Is it just the band and the frequency or do all the other 
> settings get saved into memory as well?  There are so many settings on 
> the KX3 and it is so versatile I would hope that most of the settings are
saved.
>


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Re: [Elecraft] Sherwood's receiver performance table updated

[Walter Underwood]

> On Apr 25, 2016, at 4:08 PM, Wayne Burdick  wrote:
> 
>   - *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna 
> jacks

I am really mystified about why transceivers include a 3:1 range ATU. It adds 
$150-200 to the end cost to get an external ATU. It might add $50-75 to make 
the internal ATU wide-range. It is especially odd for an entry-level rig, where 
people are likely to be using a low-slung dipole. OK, it is very strange for 
the IC-7851, too. 

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

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Re: [Elecraft] PBSK31

[David Giles]

Hello Phil,

My K2's serial number is in the 5000s so it has the temperature 
stability circuit built in.  I have only just recently started using it 
on JT9 after some time on JT65.  I don't start transmitting until it has 
warmed up after 5 minutes or so.  I first used it outdoors at my remote 
site (see VK3TUN on qrz.com) and had to shield it from the wind.  Now 
that the shed is up, that is no longer an issue.  I don't know if it 
helps that much with dissipating the heat, but I always have the bail 
extended.


73 de David VK5DG / VK3TUN


On 25/04/2016 7:53 AM, Phil Wheeler wrote:

David,

Do you do anything special to ensure frequency stability in those 
modes with your K2?


Phil W7OX

On 4/24/16 3:02 PM, David Giles wrote:
I've made hundreds of contacts using JT65 and JT9 with my K2 at 5W. 
Most of these portable on a 12v battery with solar charging. With a 
48 second transmit period, it's probably more of a stress test than 
BPSK31.


73 de David VK5DG / VK3TUN

On 24/04/2016 2:07 PM, Bruce Rattray wrote:

What is the safe level to operate the K2 at for the PBSK31 mode?  I'm
thinking 2 or 3 watts.  tnx 73 Bruce ve5rc


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Re: [Elecraft] JT65 with KX3

[Jim Rodenkirch]

Keith - don't know if you had the temp compensation alignment done  but you
also need to ensure your PC is accurate, "time wise " - I downloaded this
freeware.http://www.thinkman.com/dimension4/download.htm

Works well...72 de Jim R. K9JWV


Keith Onishi wrote
> I am experiencing some frequency drift on operating JT65 with KX3 +
> KXPA100. I was reported that my signal drifted 5 to 8Hz drift during my
> transmission and noticed almost same amount of drift during my receiving
> period.
> Output power was 20W with KXPA100. OSC temp shows 36C on receiving and 39C
> on transmitting.
> I want to know if someone have similar experience before talking to
> Elecraft support team.
> 
> 73 de JH3SIF, Keith
> 
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Re: [Elecraft] Sherwood's receiver performance table updated

[Wayne Burdick]

> Jim Brown  wrote:
> 
>> On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:
>> Wow, looks like Icom finally made a radio with performance close to the
>> humble K3S and K3 + new synth but also looks like you really got to pay
>> 'em for finally doing it, at nearly 13 grand for the 7851!
> 
> Don't be so quick to declare either of these products winners -- Rob's RX 
> measurements are only a small part of what defines the quality of a radio. 
> ICOM (and Yaesu) have a long history of producing radios with rather wide CW 
> signals, including all the current products that ARRL has measured.

Hi Jim,

Also, in the "you get what you pay for" category, here are the K3S features 
(some optional*) that differ significantly from, or are not available on, the 
IC-7300:

Receive

   - *Sub receiver (identical in performance to main), diversity and 
independent-band operation
   - Dedicated AF and RF gain controls for both receivers
   - APF (CW audio peaking filter)
   - 8-band RX EQ
   - Full stereo audio with audio effects (AFX) and L/R balance control 
   - User-settable AF limiter for use when AGC is off
   - 7 AGC customization controls

Transmit

   - PIN-diode T/R switching (audible relay on '7300)
   - Extremely fast T/R turnaround (as low as 5 ms in QRQ mode; also applies to 
KPA500)
   - Dedicated controls for CW code speed/mic gain, compression/power level
   - 8-band TX EQ

General

   - *Wide-range ATU (> 10:1 at 100 W; > 20:1 at low power) and two antenna 
jacks
   - *Internal all-mode 2-meter transverter option
   - Direct transverter band displays (9); integrated with Elecraft XV-series
   - Built-in PSK and RTTY decode (to display) and encode (via keyer paddle);
 7300 has only RTTY, I believe
   - Dedicated VFO B and RIT/XIT offset controls (VFO B is 400-count optical 
encoder
 with weighted knob)
   - 100 regular memories, plus 4 quick memories per band
   - 10 user-programmable function switches (for menu hot-keys, macros, TX 
messages)
   - Direct rotary control functions: K3 11; 7300 6
   - Direct switch functions: K3, 74 (addional 22 on P3*); 7300, 27 
(IC-7300 also has est. 10 full-time touch controls in main display 
context)
   - Keypad for direct frequency entry
   - Transflective LCD, easily readable in bright sunlight 
   - Low current drain for portable/DXpedition use (1 amp typical)
   - Works with supply voltage of as low as 10 V
   - Carrying handle included
   - *High-quality/versatile external control panel option (K-Pod)

Connectivity

   - RX antenna in/out and transverter in/out jacks
   - Stereo speaker outputs, front and rear headphones, front and rear mics
   - Analog line in/out in addition to USB (digital + audio)
   - Buffered I.F. output
   - Accessory output for compatibility with existing station equipment,
 including band-data outputs and user-defined logic in/out
   - 12-volt switched output for powering accessories

Spectrum Display*

- dedicated panadapter screen (P3) with significantly larger area
- flexible partitioning of spectrum vs waterfall
- *optional high-resolution, external SVGA display

Any corrections or things I've missed?

Wayne
N6KR








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Re: [Elecraft] JT65 with KX3

[Don Wilhelm]

Keith,

Have you done the Extended Temperature Compensation procedure on that KX3?
If not, you should do that.  It should reduce that drift due to 
temperature significantly.


73,
Don W3FPR

On 4/25/2016 6:34 PM, Keith Onishi wrote:

I am experiencing some frequency drift on operating JT65 with KX3 + KXPA100. I 
was reported that my signal drifted 5 to 8Hz drift during my transmission and 
noticed almost same amount of drift during my receiving period.
Output power was 20W with KXPA100. OSC temp shows 36C on receiving and 39C on 
transmitting.



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Re: [Elecraft] KX3 Memory Question

[Don Wilhelm]

Larry,

The memory will contain not only the frequency, but the mode and several 
other settings, such as filter settings, Preamp/Attenuator, etc.
What is saved should be sufficient to restore most of the parameters to 
the state it was when you saved to that memory.


73,
Don W3FPR

On 4/25/2016 5:42 PM, Larry D. Warner wrote:

I have asked supp...@elecraft.com   this
question more than once and have not received an answer.  Maybe the group
knows.  When I save a frequency to memory in my KX3, what all is saved?  Is
it just the band and the frequency or do all the other settings get saved
into memory as well?  There are so many settings on the KX3 and it is so
versatile I would hope that most of the settings are saved.



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[Elecraft] JT65 with KX3

[Keith Onishi]

I am experiencing some frequency drift on operating JT65 with KX3 + KXPA100. I 
was reported that my signal drifted 5 to 8Hz drift during my transmission and 
noticed almost same amount of drift during my receiving period.
Output power was 20W with KXPA100. OSC temp shows 36C on receiving and 39C on 
transmitting.
I want to know if someone have similar experience before talking to Elecraft 
support team.

73 de JH3SIF, Keith

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Re: [Elecraft] Sherwood's receiver performance table updated

[Jim Brown]

On Mon,4/25/2016 1:34 PM, lstavenhagen wrote:

Wow, looks like Icom finally made a radio with performance close to the
humble K3S and K3 + new synth but also looks like you really got to pay
'em for finally doing it, at nearly 13 grand for the 7851!


Don't be so quick to declare either of these products winners -- Rob's 
RX measurements are only a small part of what defines the quality of a 
radio. ICOM (and Yaesu) have a long history of producing radios with 
rather wide CW signals, including all the current products that ARRL has 
measured.


73, Jim K9YC
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Re: [Elecraft] Sherwood's receiver performance table updated

[wb4jfi]

While I don't disagree with the possibility of your first paragraph Joe, 
your third one doesn't make a lot of sense to me.


Firstly, the K3/K3S (without the second receiver) cannot be on more than ONE 
amateur band at a time.  So, why create an artificial "test" that the 
typical K3 can't even do?  I believe that most K3/K3S out there don't have 
the second receiver.  Plus, the K3/K3S cannot listen to three (or more) 
bands at once, which the 6500 and 6700 can.


Secondly, I wonder how good the K3/K3S would be if you also pulled their 
front-end filtering?


I'm still very much an Elecraft fan with both a K3 and a KX3, so I'm not 
disparaging the Elecraft equipment at all.  I LOVE THEM!  I just want apples 
vs apples, please.


BTW, I have an AM station within a couple of miles - directly line-of-sight 
down the river, and I don't see this alleged problem at all.  But, I'm only 
using dipoles, a Steppir vertical, or a 50-ohm resistor for antennas. Hi Hi. 
I do see this problem with several 8- or 12-bit SDR designs without 
high-pass filtering, but with a filter, it goes away.  14-bit ADCs aren't 
showing this problem here, even without the HPF.

73, Terry, N4TLF




-Original Message- 
From: Joe Subich, W4TV

Sent: Monday, April 25, 2016 5:30 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


On 4/25/2016 4:44 PM, Dave Hachadorian wrote:

It's interesting that the 7300's ranking in the table is because of its
94 dB Dynamic Range at 2 KHz spacing.  But the footnotes indicate that
this dynamic range is with AP+ turned ON.  With AP+ ON, minimum
detectable signal is degraded by 11 dB.


That's true of *every* direct sampling SDR in the list.  That's the
"dirty little secret" of direct sampling SDRs ... in order to maintain
that "pristine" IMD DR the "total signal level" or instantaneous peak
voltage at the ADC must stay below the clipping/overflow level.

Look at the ARRL review of the Flex 6700 and 6300 ... compare their
MDS with the preamps on and preamps off, then look at the IMD DR
with the preamps on and off (where the data is available).  Even for
the Flex, MDS is degraded by 10 to 15 dB in order to maintain the full
dynamic range (not much different than the 7300).

Direct sampling disciples will claim the MDS reduction is not a problem
but try running one of their radios within a couple miles of an AM
station with "slice receivers" on more than one amateur band (so the
preselector/bandpass filters are bypassed).

73,

  ... Joe, W4TV



With AP+ OFF, as generally recommended in the footnotes, 2 KHz dynamic
range is only 81 dB, which would place the 7300 considerably lower in
the table, but still pretty good.

Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- From: Joe Subich, W4TV
Sent: Monday, April 25, 2016 11:55 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


Very interesting ... pretty good performance from the IC-7300 for an
"entry level radio."  On the other hand, the IC-9100 should be better
than "mid pack" given it's recent design and price - it's even *worse*
(both IMD and LO Noise) that that paragon of "high performance," the
IC-706mkIIg!

73,

   ... Joe, W4TV

On 4/25/2016 10:55 AM, Wayne Burdick wrote:

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:

http://www.sherweng.com/table.html

73,
Wayne
N6KR


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[Elecraft] KX3 Memory Question

[Larry D. Warner]

I have asked supp...@elecraft.com   this
question more than once and have not received an answer.  Maybe the group
knows.  When I save a frequency to memory in my KX3, what all is saved?  Is
it just the band and the frequency or do all the other settings get saved
into memory as well?  There are so many settings on the KX3 and it is so
versatile I would hope that most of the settings are saved.

 

Regards,

 

Larry

KG7ZSB

 

You cannot live a perfect day without doing something for someone who will
never be able to repay you.

-- John Wooden

 

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Re: [Elecraft] Sherwood's receiver performance table updated

[Joe Subich, W4TV]

On 4/25/2016 4:44 PM, Dave Hachadorian wrote:

It's interesting that the 7300's ranking in the table is because of its
94 dB Dynamic Range at 2 KHz spacing.  But the footnotes indicate that
this dynamic range is with AP+ turned ON.  With AP+ ON, minimum
detectable signal is degraded by 11 dB.


That's true of *every* direct sampling SDR in the list.  That's the
"dirty little secret" of direct sampling SDRs ... in order to maintain
that "pristine" IMD DR the "total signal level" or instantaneous peak
voltage at the ADC must stay below the clipping/overflow level.

Look at the ARRL review of the Flex 6700 and 6300 ... compare their
MDS with the preamps on and preamps off, then look at the IMD DR
with the preamps on and off (where the data is available).  Even for
the Flex, MDS is degraded by 10 to 15 dB in order to maintain the full
dynamic range (not much different than the 7300).

Direct sampling disciples will claim the MDS reduction is not a problem
but try running one of their radios within a couple miles of an AM
station with "slice receivers" on more than one amateur band (so the
preselector/bandpass filters are bypassed).

73,

  ... Joe, W4TV



With AP+ OFF, as generally recommended in the footnotes, 2 KHz dynamic
range is only 81 dB, which would place the 7300 considerably lower in
the table, but still pretty good.

Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- From: Joe Subich, W4TV
Sent: Monday, April 25, 2016 11:55 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table updated


Very interesting ... pretty good performance from the IC-7300 for an
"entry level radio."  On the other hand, the IC-9100 should be better
than "mid pack" given it's recent design and price - it's even *worse*
(both IMD and LO Noise) that that paragon of "high performance," the
IC-706mkIIg!

73,

   ... Joe, W4TV

On 4/25/2016 10:55 AM, Wayne Burdick wrote:

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:

http://www.sherweng.com/table.html

73,
Wayne
N6KR


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Re: [Elecraft] Sherwood's receiver performance table updated

[NC3Z Gary]

True a fully kitted KX3 station will be about $3000, but the KX3 is 
really a different animal. There is a lot of flexibility with a KX3 
station. For emergency power operation the KX3 draws a lot less power on 
receive.

One key feature is Elecraft themselves, somewhat regular firmware (and 
hardware) updates that improve performance and add features, and all 
this on a product that may be several years old. Other radio 
manufacturers are notorious for not providing updates after a relatively 
short period of time.



Gary Mitchelson
NC3Z/4 Pamlico County, NC FM15

On 25-Apr-16 15:35, Bill Frantz wrote:

>
> Compare that with a KX3 at $1850 -- $1250 for radio and tuner plus $600
> for the PX3. You can save $200 by getting the kits. With the KX3/PX3 you
> get better specs, more portability, and PSK31/63 encode/decode[1]. But
> you only get 10 or so watts. Going to 100W will add $1180 (minus $50 for
> the kit), putting the KX3 system into an entirely different price category.
>
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Re: [Elecraft] Sherwood's receiver performance table updated

[Bill Frantz]

I have no plans to replace my KX3/PX3 with a IC-7300. But I 
still don't have 100W for it. At home, I use my K3/100 and on 
the road I'm QRP.


73 Bill AE6JV

On 4/25/16 at 1:44 PM, n...@tx.rr.com (GRANT YOUNGMAN) wrote:

I think your comparison misses the entire point of the KX3.  
But in any case, you’re welcome to the 7300 I won’t be 
purchasing or throwing (all 10 lbs of it plus batteries)  into 
my backpack for a walk to the park  … :-)


Grant NQ5T
K3 #2091, KX3 #8342






A quick Google shows a number of reputable dealers selling the IC-7300 for 
$1500. It has an

impressive set of features including a bandscope, 100W, and a tuner.


Compare that with a KX3 at $1850 -- $1250 for radio and tuner plus $600 for the 
PX3. You can save
$200 by getting the kits. With the KX3/PX3 you get better 
specs, more portability, and PSK31/63 encode/decode[1]. But you 
only get 10 or so watts. Going to 100W will add $1180 (minus 
$50 for the kit), putting the KX3 system into an entirely 
different price category.


---
Bill Frantz| gets() remains as a monument | Periwinkle
(408)356-8506  | to C's continuing support of | 16345 
Englewood Ave
www.pwpconsult.com | buffer overruns. | Los Gatos, 
CA 95032


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[Elecraft] Discover the HF Experience at ARRL Expo in Dayton

[Gerry Hull]

Hello fellow Elecraftians (or is it Elecraftors?),


I have been on a crusade to introduce new hamsto HF.We just finished
our "beta" events in Winnipeg, MB and Framingham, MA...

The idea is  teach non-hams/new hams about HF, and let them experience some
QSOs.
We all did it as youngsters at Field Day...

Well, this is pretty darn easy to do -- at a club meeting or convention --
via remote.   No dealing with compromise antennas.

So, this year at Dayton, we will have four HF Stations set up (using
remotes)..  Three are K3/0 Minis, and we we will have one Flex Maestro.

We hope that newbies/non-HF ops/non-licensed folks will stop by and make a
QSO or two.
I have an online reservation system at http://hfradio.rocks.   If you know
someone who would like to give it a go, and they are coming to Dayton, have
them sign up.

We have a bunch of ops lined up to staff the stations, as Elmers.   If you
want to spend an hour or so helping us out, please email me of list to
gerry at w1ve.com.

Where will be be connecting?  Some pretty nice stations!

W7RN
W1KM
VE4EA
VY1AAA
SK3W
K1TTT
K9CT

We will be operating mainly SSB, but will do some RTTY and CW if anyone
asks.

(and yes, we do have a good, wired, internet connection.)

The remote-side gear is being provided by private hams who are part of this
event.
Bob Heil is supplying us with headsets.

Stop by and say hello or offer your help!

73,

Gerry Hull, W1VE/VE1RM
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Re: [Elecraft] Sherwood's receiver performance table updated

[Rick WA6NHC]

This is interesting to follow but well above my full understanding...  
But how do we come up with a common standard between the two types of 
radios (although I expect direct sample to improve to a point to become 
common)?


Further from Rob (since we're off topic here):

-=-=-=-=-=-

How to rank direct-sampling SDR radios is a real can of worms.  If you 
look at the review in the May QST of the Elad DUO, you will see the only 
dynamic-range data is listed as “Best Case”.  There is no “typical case” 
or “worst case” data, and the “best case” dynamic range (DR3) of 99 dB 
was obtained with a third strong “incidental dither” signal.  That 
strong “incidental dither” signal may or may not be there when you need it.


In the case of the 7300, on the lower bands, 160 – 40 meters, the 
increased noise floor caused by enabling IP+ would not be an issue. 
Nighttime 40 meter band noise is about -100 dBm, and the noise floor of 
the 7300 with IP+ ON is about -122 dBm.  If 40-meter AM broadcast 
stations above 7200 are stressing the radio, IP+ will be a good 
solution.  On the other hand, if one is on 15, 12, 10 or 6 meters, the 
noise floor of the radio with IP+ ON may be about equal to band noise in 
a rural environment.  All bets are off in an urban environment, due to 
all the local RFI.  In some cases on the higher HF bands, receiver noise 
will be higher than band noise with IP+. That is why I made the caution 
to not just turn IP+ ON and leave it there.  Of course in a foot note I 
don’t have unlimited space to explain all this.


The dynamic-range data is all there, IP+ both ON and OFF.  It is similar 
to my KX3 data and footnotes.  The dynamic range is high, but because 
the opposite sideband rejection is limited to about 65 dB, in some cases 
that limitation will dominate.  Thus three values of dynamic range are 
in the table, explained by the foot notes.


The same concern can be lodged about the original K3 data where dynamic 
range (DR3) is listed as 101, 96 and 95 dB, with foot notes.  The DR3 
due to RMDR is higher with a 200-Hz bandwidth than with a 500-Hz 
bandwidth.  In effect the radio is ranked assuming one is operating the 
radio in its best configuration.


One other note, even though the close-in dynamic range data is mainly 
applicable to CW operation due to the narrower transmitted bandwidth of 
CW stations, an SSB only operator may assume that level of performance 
applies to him, too. In reality on SSB, transmitted IMD splatter of an 
adjacent channel signal (3 kHz away) is usually the limit in copy of a 
weak station.  The radio is rarely the limit in this case, as splatter 
is usually worse than the dynamic range of the radio.


-=-=-=-=-

And later...

-=-=-=-=-=-=-

No, IP+ is not an attenuator.  It enables “dither” and “random” on the 
ADC chip.  The Apache ANAN series also has dither and random as an 
option, but in the case of newer ANAN-200D transceivers, the noise floor 
is not degraded.  Older 100D and 200D units did have an 11 to 13 dB 
noise floor degradations.


Clarity is important, so thanks for the chance to expand on this issue.

73, Rob, NC0B

-=-=-=-
Rick nhc

On 4/25/2016 1:44 PM, Dave Hachadorian wrote:
It's interesting that the 7300's ranking in the table is because of 
its 94 dB Dynamic Range at 2 KHz spacing.  But the footnotes indicate 
that this dynamic range is with AP+ turned ON. With AP+ ON, minimum 
detectable signal is degraded by 11 dB.


With AP+ OFF, as generally recommended in the footnotes, 2 KHz dynamic 
range is only 81 dB, which would place the 7300 considerably lower in 
the table, but still pretty good.


Dave Hachadorian, K6LL
Yuma, AZ


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Re: [Elecraft] Sherwood's receiver performance table updated

[Dave Hachadorian]

It's interesting that the 7300's ranking in the table is because 
of its 94 dB Dynamic Range at 2 KHz spacing.  But the footnotes 
indicate that this dynamic range is with AP+ turned ON.  With AP+ 
ON, minimum detectable signal is degraded by 11 dB.


With AP+ OFF, as generally recommended in the footnotes, 2 KHz 
dynamic range is only 81 dB, which would place the 7300 
considerably lower in the table, but still pretty good.


Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- 
From: Joe Subich, W4TV

Sent: Monday, April 25, 2016 11:55 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sherwood's receiver performance table 
updated



Very interesting ... pretty good performance from the IC-7300 for 
an
"entry level radio."  On the other hand, the IC-9100 should be 
better
than "mid pack" given it's recent design and price - it's even 
*worse*
(both IMD and LO Noise) that that paragon of "high performance," 
the

IC-706mkIIg!

73,

   ... Joe, W4TV

On 4/25/2016 10:55 AM, Wayne Burdick wrote:

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:

http://www.sherweng.com/table.html

73,
Wayne
N6KR


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Re: [Elecraft] Sherwood's receiver performance table updated

[GRANT YOUNGMAN]

I think your comparison misses the entire point of the KX3.  But in any case, 
you’re welcome to the 7300 I won’t be purchasing or throwing (all 10 lbs of it 
plus batteries)  into my backpack for a walk to the park  … :-)

Grant NQ5T
K3 #2091, KX3 #8342




> 
> 
> A quick Google shows a number of reputable dealers selling the IC-7300 for 
> $1500. It has an impressive set of features including a bandscope, 100W, and 
> a tuner.
> 
> Compare that with a KX3 at $1850 -- $1250 for radio and tuner plus $600 for 
> the PX3. You can save $200 by getting the kits. With the KX3/PX3 you get 
> better specs, more portability, and PSK31/63 encode/decode[1]. But you only 
> get 10 or so watts. Going to 100W will add $1180 (minus $50 for the kit), 
> putting the KX3 system into an entirely different price category.
> 

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Re: [Elecraft] Sherwood's receiver performance table updated

[lstavenhagen]

Wow, looks like Icom finally made a radio with performance close to the
humble K3S and K3 + new synth but also looks like you really got to pay
'em for finally doing it, at nearly 13 grand for the 7851!

But the 7300 looks actually pretty decent performance-wise, so interesting
surprise at that price point.

73,
LS
W5QD





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Re: [Elecraft] K3: Main RX gone deaf

[Udo Langenohl - DK5YA]

Gentleman,

thanks for all so many replies. Will try to check all ideas tomorrow, 
XYL permitting ... ;-).


73 Udo, DK5YA

P.S.: The issue occurs at the RX IN and TVTR IN ports of the KXV3A too.

Am 25.04.2016 um 17:57 schrieb Jerry:

Reseat the internal coax jumpers in the surf signal path.

Sent from my iPad


On Apr 25, 2016, at 11:52 AM, Graham g3tct  wrote:

Hi Udo
Before you start tearing the rig apart, two ideas:-

-is there a big difference for weak signals of say S4?
-if not, it may just be the S meter calibration that needs attention.
-if so, preamp on for either? Att on for main?

HTH
Graham


On 19:59, Udo Langenohl - DK5YA wrote:
Gentleman,

I'm struggling with a Main RX vs. Sub RX issue. My Main RX is rather deaf 
compared to the Sub RX. I see at least 23.5dB attenuation between Main RX and 
Sub RX when comparing highly stable signals from my signal generator (HP8664A). 
This is only for ANT1/2 vs. AUX-IN!
Example:
-33dBm on 28.500
into AUX-IN (SUB RX): exactly 59 +40dB
into ANT 1 (Main RX): 59 +15dB
into ANT 2 (Main RX): 59 +15dB

I've checked all the usual suspects (pin diodes):
D1 and D5 on the KXV3A: o.k.
Each and every pin diode on the SUB IN board: o.k.
D5 on the Main RX board: o.k.

This is a K3 #59xx with almost everything inside money can buy.

My second K3 (serial #39xx) does not show this strange behavior. Main RX and 
SUB RX show exactly the same values on ANT1/2 and AUX IN. -33dBm is 59+40 on 
MAIN and SUB RX, no matter if Ant1, 2 or AUX IN.

Any idea? I'm searching for weeks now and I'm close to give up.

Udo, DK5YA

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http://www.vhfdx.de/ [owner] *
http://www.palekastro.de/[owner] *
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Re: [Elecraft] Sherwood's receiver performance table updated

[Barry N1EU]

fwiw, 3 issues concern me about the 7300:

1. Some IC7300 recordings I've downloaded indicated very low AGC Threshold
and limited audio dynamic range.  There's no control over threshold and
slope.  I haven't read about any seasoned users fiddling with gain settings
to try and milk more audio dynamic range and higher threshold out of the
7300.

2. Reports are that something is "broken" with the IP+ implementation -
noise floor increases greatly.  And without IP+, DR is limited as the
sherweng.com table shows.  My understanding is that IP+ use is sometimes
necessary to avoid OVF (ADC overflow).  This is a 14-bit ADC.

3.  There still seems to be discussion on whether or not the 7300 can
produce power spikes in ssb

Looks like a good first effort in direct sampling design from Icom.  I'll
wait for their second try.

73, Barry N1EU

On Mon, Apr 25, 2016 at 2:55 PM, Wayne Burdick  wrote:

> Rob has added the IC-7851, IC-7300, and IC-9100 to his table:
>
> http://www.sherweng.com/table.html
>
> 73,
> Wayne
> N6KR
>
>
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[Elecraft] Dayton Booth Help

[Lisa Jones - Elecraft Sales]

Elecraft will once again be showing at the Dayton Hamvention, May 20, 
21, and 22, 2016.


Thank you to those of you who have already volunteered to help in the 
booth during the Hamvention this year.


We can always use more help, so if you have a few hours to help out 
during any one of the 3 days, we would be very grateful.


Please email made...@elecraft.com directly if you are interested and let 
her know when you would be able to join us in the booth.


Thank you for your consideration.

Lisa

--
Lisa Jones
Elecraft, Inc.
(831) 763-4211

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Re: [Elecraft] Sherwood's receiver performance table updated

[Bill Frantz]

A quick Google shows a number of reputable dealers selling the 
IC-7300 for $1500. It has an impressive set of features 
including a bandscope, 100W, and a tuner.


Compare that with a KX3 at $1850 -- $1250 for radio and tuner 
plus $600 for the PX3. You can save $200 by getting the kits. 
With the KX3/PX3 you get better specs, more portability, and 
PSK31/63 encode/decode[1]. But you only get 10 or so watts. 
Going to 100W will add $1180 (minus $50 for the kit), putting 
the KX3 system into an entirely different price category.


73 Bill AE6JV

[1] I just did a quick eyeball differences test on the features. 
I well may have missed somethings of real importance.


On 4/25/16 at 11:55 AM, li...@subich.com (Joe Subich, W4TV) wrote:


Very interesting ... pretty good performance from the IC-7300 for an
"entry level radio."


---
Bill Frantz|"We used to quip that "password" is the most common
408-356-8506   | password. Now it's 'password1.' Who said 
users haven't

www.pwpconsult.com | learned anything about security?" -- Bruce Schneier

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Re: [Elecraft] Sherwood's receiver performance table updated

[Joe Subich, W4TV]

Very interesting ... pretty good performance from the IC-7300 for an
"entry level radio."  On the other hand, the IC-9100 should be better
than "mid pack" given it's recent design and price - it's even *worse*
(both IMD and LO Noise) that that paragon of "high performance," the
IC-706mkIIg!

73,

   ... Joe, W4TV

On 4/25/2016 10:55 AM, Wayne Burdick wrote:

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:

http://www.sherweng.com/table.html

73,
Wayne
N6KR


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Re: [Elecraft] Sherwood's receiver performance table updated

[n9tf]

:) Best darn investment I ever made on a ham radio! Keep the hits coming 
Elecraft! 
  
73 
Gene, N9TF 
K3S 10057 
P3 

- Original Message -

From: "Wayne Burdick"  
To: "elecraft"  
Cc: k...@yahoogroups.com 
Sent: Monday, April 25, 2016 9:55:57 AM 
Subject: [Elecraft] Sherwood's receiver performance table updated 

Rob has added the IC-7851, IC-7300, and IC-9100 to his table: 
  
    http://www.sherweng.com/table.html 

73, 
Wayne 
N6KR 


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Re: [Elecraft] K3: Main RX gone deaf

[Graham g3tct]

Hi Udo
Before you start tearing the rig apart, two ideas:-

-is there a big difference for weak signals of say S4?
-if not, it may just be the S meter calibration that needs attention.
-if so, preamp on for either? Att on for main?

HTH
Graham

On 19:59, Udo Langenohl - DK5YA wrote:

Gentleman,

I'm struggling with a Main RX vs. Sub RX issue. My Main RX is rather 
deaf compared to the Sub RX. I see at least 23.5dB attenuation between 
Main RX and Sub RX when comparing highly stable signals from my signal 
generator (HP8664A). This is only for ANT1/2 vs. AUX-IN!

Example:
-33dBm on 28.500
into AUX-IN (SUB RX): exactly 59 +40dB
into ANT 1 (Main RX): 59 +15dB
into ANT 2 (Main RX): 59 +15dB

I've checked all the usual suspects (pin diodes):
D1 and D5 on the KXV3A: o.k.
Each and every pin diode on the SUB IN board: o.k.
D5 on the Main RX board: o.k.

This is a K3 #59xx with almost everything inside money can buy.

My second K3 (serial #39xx) does not show this strange behavior. Main 
RX and SUB RX show exactly the same values on ANT1/2 and AUX IN. 
-33dBm is 59+40 on MAIN and SUB RX, no matter if Ant1, 2 or AUX IN.


Any idea? I'm searching for weeks now and I'm close to give up.

Udo, DK5YA

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Re: [Elecraft] Poor band conditions? Try the SCAN function

[Drew AF2Z]

From time to time I set up a wireless intercom/camera ("baby cam") in 
front of the K3 while scanning. Then I can monitor the action remotely 
down in the workshop or while working out, fixing dinner, etc. (Now, if 
I only had a wireless remote control to fully operate the K3's receiver...)



73,
Drew
AF2Z

On 04/24/16 20:42, Wayne Burdick wrote:

Here in Northern California, at least at my QTH, the bands seem to be in very 
poor shape. (It doesn't help that my OCF dipole has one leg on the ground due 
to high winds.)

At times like this, the SCAN function available on most Elecraft transceivers 
can help you find signals you might otherwise miss. SCAN does the work for you 
while you check your email, play chess, re-read The Lord of the Rings, shave, 
etc.

When a signal pops up, scanning stops, and the receiver unmutes briefly so you can 
consider the signal's worthiness. As you'll discover, bands that were "dead" 
may not be, in reality. My favorite band for this sort of thing is 15 meters, in the late 
afternoon. A minute or two after starting a scan, you may hear DX appear from out of 
nowhere.

For specific instructions for your rig, check the table of contents in the 
owner's manual.

Here a few general tips:

- use a narrow filter passband when possible, especially if the band is noisy

- the tuning RATE in effect when scan starts determines how long it takes
   to scan the selected segment; finer-tuning slows things down, and may result
   in detection of weaker signals

- if the band is noisy (QRN), the SCAN function may unmute too frequently; try
   using the noise blanker

73,
Wayne
N6KR





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Re: [Elecraft] [elecraft] KXPA100 KXATU PX3

[Wayne Burdick]

Congratulations, Barry. We should all be so dextrous at 79!

73,
Wayne
N6KR


On Apr 25, 2016, at 2:26 AM, Barry Middleton  wrote:

> At long last I have got round to assembling my KXPA100, KX3ATU and the PX3. 
> The only slight problem that I had was with the PX3 as 79 year old fingers 
> don't work as good as they use to. However after a thorough check to make 
> sure all was correct, I connected it all up, power on and all worked fine. I 
> would like to thank the Elecraft team for a firt class product and the help 
> that is available on this reflector.
> 
>   73 de Barry G4DBS
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Re: [Elecraft] KX3 CW Msg send

[Nick Kennedy]

Yes, FAST PLAY is great. I used it on QRPTTF.

Barry's request #2 is high on my list too. For K3 and KX3.  Repeating:


2. When in message repeat mode, allow for a single paddle dit to silently
terminate repeat mode (without actually transmitting or generating
sidetone).  This would allow you to copy someone answering your CQ without
missing a beat.




On 25 Apr 2016, at 12:27, Barry N1EU  wrote:


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Re: [Elecraft] Poor band conditions? Try the SCAN function

[Drew AF2Z]

I also have often thought that a user settable pause time would be most 
useful. I usually scan when I'm doing other things around the shack (or 
in another room), not sitting right in front of the rig watching the scan.


73,
Drew
AF2Z



On 04/24/16 23:42, lstavenhagen wrote:

Yes, I use the scan function on both my K2's and my K3 and K3S. Next best
thing to a panadapter available.

One thing I have noticed about it on my K2 (and probably the K3 also), is it
has two lengths of pauses - one which is just a few seconds and another
about 30 secs or so. But which length of pause it uses on what type of
signal it stops on seems a bit random. Sometimes it'll open up and pause on
an actual CW signal for the short pause, but then the long 30 sec. pause on
a continuous noise source. And sometimes the reverse.

Not a complaint, though I wonder if there's a way to specify a pause time
somewhere. forgive me if that's in the manual somewhere already...

And yes the bands have been nearly dead lately. Practically nothing on 20M
and up today, tho lots of stateside sigs on 30 and 40M

DM



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Poor-band-conditions-Try-the-SCAN-function-tp7616635p7616639.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] Sherwood's receiver performance table updated

[Wayne Burdick]

Rob has added the IC-7851, IC-7300, and IC-9100 to his table:
 
http://www.sherweng.com/table.html 

73,
Wayne
N6KR


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Re: [Elecraft] Building K2 SSB unit KSB2 version E

[William Lagerberg]

Thanks Don,

I reversed the connectors, female = female and male = male now.
 
For everybody when you desolder the connectors used in the K2 for the SSB board 
for example, the pins are getting lose in the plastic by the mail connectors, 
take care that they get the same hight when u use them again….
My advice remove them and take new one’s its not the money :-))

Regards William PE1BSB



> On 24 Apr 2016, at 20:09, Don Wilhelm  wrote:
> 
> William,
> 
> I hate it when a builder does that and then I have to repair it later in its 
> life - only because the bypass jumpers I have should I need to remove the 
> KSB2 for test purposes do not work.
> 
> Other than that aspect, it will cause no operational problems.
> There is a greater chance of the male pins to become bent if they are on the 
> RF board, and if they should, they are harder to straighten than male pins on 
> the option board.
> 
> If you have *good* desoldering equipment available, I would change them, but 
> lacking that, leave them as-is.
> 
> 73,
> Don W3FPR
> 
> On 4/24/2016 12:36 PM, will...@zendamateur.nl wrote:
>> Hi every body,
>> 
>>  
>> Posted some messages, and love the way the list works.
>> 
>> Sorry about my English last message was just thinking on paper and that
>> ended in some comments :)
>> 
>>  
>> I bought the K2 ¼ already build, looked good so I took the risk…
>> 
>>  
>> Now wat I noticed having finished today the RF board, is that the previous
>> builder reversed the connectors J9 J10 and J11 he installed the mail side on
>> the RF board, and the female on the KSB2 board.
>> 
>>  
>> I don’t think there will be a divergence.
>> 
>> 
> 


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Re: [Elecraft] KX3 CW Msg send

[Heinz Bärtschi]

I would rather prefer a KX-Pod
- no-compromise single button functions
- without a tuning knob
- attachable in place of the KXPD3
- very lightweight (e.g. for SOTA)
- using a control cable to ACCx

Have you ever thought of such a thing, Wayne?

73 tks,
Heinz HB9BCB


> Am 25.04.2016 um 13:27 schrieb Barry N1EU :
> 
> After spending 7 hours operating in QRPTTF on Saturday with my KX3, I wish
> for 2 things:
> 
> 1. Single button press to send cw message instead of two
> 2. When in message repeat mode, allow for a single paddle dit to silently
> terminate repeat mode (without actually transmitting or generating
> sidetone).  This would allow you to copy someone answering your CQ without
> missing a beat.
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Re: [Elecraft] KX3 CW Msg send

[Hajo Dezelski]

Hi,

and in addition:
With the Px3 you can program 8 messages with one push of a button.

73 de Hajo

Gruss
Hajo

---
Cela est bien dit, mais il faut cultiver notre jardin.

On Mon, Apr 25, 2016 at 2:21 PM, David Anderson via Elecraft <
elecraft@mailman.qth.net> wrote:

> Barry,
>
> You can set the KX3 up for single button message send.
>
> * FAST MESSAGE PLAY: A long-hold of MSG (~3 sec) puts the KX3 into FAST
> PLAY mode. In this mode, the BAND+, BAND-, and FREQ_ENT switches can be
> used to play/repeat messages 1, 2, and 3 immediately, without the need to
> first tap MSG. To turn off fast play, hold MSG for ~3 seconds again, or
> turn the KX3 off and back on. Notes: (1) In voice modes (using the built-in
> DVR), only messages 1 and 2 are available, corresponding to BAND+ and BAND-
> in fast-play. (2) At present, message chaining is only available in CW
> modes (with both normal and fast-play).
>
>
>
>
> 73 from David GM4JJJ
>
> > On 25 Apr 2016, at 12:27, Barry N1EU  wrote:
> >
> > After spending 7 hours operating in QRPTTF on Saturday with my KX3, I
> wish
> > for 2 things:
> >
> > 1. Single button press to send cw message instead of two
> > 2. When in message repeat mode, allow for a single paddle dit to silently
> > terminate repeat mode (without actually transmitting or generating
> > sidetone).  This would allow you to copy someone answering your CQ
> without
> > missing a beat.
> >
> > 73, Barry N1EU
> > __
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Re: [Elecraft] KX3 CW Msg send

[David Anderson via Elecraft]

Barry,

You can set the KX3 up for single button message send. 

* FAST MESSAGE PLAY: A long-hold of MSG (~3 sec) puts the KX3 into FAST PLAY 
mode. In this mode, the BAND+, BAND-, and FREQ_ENT switches can be used to 
play/repeat messages 1, 2, and 3 immediately, without the need to first tap 
MSG. To turn off fast play, hold MSG for ~3 seconds again, or turn the KX3 off 
and back on. Notes: (1) In voice modes (using the built-in DVR), only messages 
1 and 2 are available, corresponding to BAND+ and BAND- in fast-play. (2) At 
present, message chaining is only available in CW modes (with both normal and 
fast-play).




73 from David GM4JJJ

> On 25 Apr 2016, at 12:27, Barry N1EU  wrote:
> 
> After spending 7 hours operating in QRPTTF on Saturday with my KX3, I wish
> for 2 things:
> 
> 1. Single button press to send cw message instead of two
> 2. When in message repeat mode, allow for a single paddle dit to silently
> terminate repeat mode (without actually transmitting or generating
> sidetone).  This would allow you to copy someone answering your CQ without
> missing a beat.
> 
> 73, Barry N1EU
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[Elecraft] KX3 CW Msg send

[Barry N1EU]

After spending 7 hours operating in QRPTTF on Saturday with my KX3, I wish
for 2 things:

1. Single button press to send cw message instead of two
2. When in message repeat mode, allow for a single paddle dit to silently
terminate repeat mode (without actually transmitting or generating
sidetone).  This would allow you to copy someone answering your CQ without
missing a beat.

73, Barry N1EU
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[Elecraft] [KX3] More Macro Buttons

[Joel Black]

I wonder if it would be feasible to have more macro buttons in a future F/W 
release. Perhaps using the one of the PF buttons to put the radio into “macro” 
mode and use the number buttons for the macros?

Just a thought. Don’t know if it’s possible or not.

73,
Joel - W4JBB
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[Elecraft] [elecraft] KXPA100 KXATU PX3

[Barry Middleton]

At long last I have got round to assembling my KXPA100, KX3ATU and the 
PX3. The only slight problem that I had was with the PX3 as 79 year old 
fingers don't work as good as they use to. However after a thorough 
check to make sure all was correct, I connected it all up, power on and 
all worked fine. I would like to thank the Elecraft team for a firt 
class product and the help that is available on this reflector.


73 de Barry G4DBS
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Re: [Elecraft] Smaller SP3 for KX3

[Bruce Nourish]

That's what I needed to know. Thanks!

On Sun, Apr 24, 2016, 22:40 Wayne Burdick  wrote:

> Hi Bruce,
>
> I use the Chill Pills. Very compact, amplified, retractable cords, battery
> charged via a USB port, and decent sound, too.
>
> 73,
> Wayne
> N6KR
>
>
> On Apr 24, 2016, at 10:38 PM, Bruce Nourish  wrote:
>
> > Hi Elecraft folks,
> >
> > To better inform my project list, is there a smaller version of the SP3
> in
> > the pipeline, sized to mach the KX3?
> >
> > Bruce
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