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Re: Elecraft KX1 - a builder's review

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Mike Morrow-3

Re: Elecraft KX1 - a builder's review

Phil wrote:

> A reasonable assessment, Johnny. Of course the KX1
> was designed as the ultimate Trail-Friendly Radio
> (TFR) and that it is!

I always preferred the K1 versus the KX1. I must have 15m,
plus the KX1 really needs a four-pole IF filter, IMO.

I have a dream of a KX2 that is a KX1 descendant, with four-pole
filter, 15m and maybe other bands not on a KX1, back-lit LCD vs
LED, noise blanker, and everything required for the band coverage
laid out from the start in the design, and not as an after-
thought. (As has been often noted, the KX1 is not particularly
easy rig to build with all the options.) I'd also like to see
5 watt output on all bands with 14 vdc power. Perhaps it could
even be a factory-built SMT design. Finally, that KX2 would need
an ATU capable of far more than 254 combinations of reactance
insertion. The KAT1's 1022 combinations would be minimum, IMHO.

A small, capable, simple-to-operate, very low-power-consumption
QRP rig still has great appeal even with availability of the
overwhelming capability of the KX3. I'd like to have both.

...and the KX2 slot in the Elecraft line needs filling! :-)

Mike / KK5F
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Johnny Siu

Elecraft KX1 - a builder's review

Hello Mike,
KX1 is not cheap and I would wonder there is a sizeable market now. So, KX2 will be a big question mark.
I spent quite some time building the low pass filter LPF1 of the KXB3080 option. This part is even more difficult than K2.
73
Johnny VR2XMC
----- 郵件原件 ----
寄件人︰ Mike Morrow <[hidden email]>
收件人︰ [hidden email]
副本(CC)︰
傳送日期︰ 2014年12月17日 (週三) 11:23 AM
主題︰ Re: [Elecraft] Elecraft KX1 - a builder's review

Phil wrote:

> A reasonable assessment, Johnny. Of course the KX1
> was designed as the ultimate Trail-Friendly Radio
> (TFR) and that it is!

I always preferred the K1 versus the KX1. I must have 15m,
plus the KX1 really needs a four-pole IF filter, IMO.

I have a dream of a KX2 that is a KX1 descendant, with four-pole
filter, 15m and maybe other bands not on a KX1, back-lit LCD vs
LED, noise blanker, and everything required for the band coverage
laid out from the start in the design, and not as an after-
thought. (As has been often noted, the KX1 is not particularly
easy rig to build with all the options.) I'd also like to see
5 watt output on all bands with 14 vdc power. Perhaps it could
even be a factory-built SMT design. Finally, that KX2 would need
an ATU capable of far more than 254 combinations of reactance
insertion. The KAT1's 1022 combinations would be minimum, IMHO.

A small, capable, simple-to-operate, very low-power-consumption
QRP rig still has great appeal even with availability of the
overwhelming capability of the KX3. I'd like to have both.

...and the KX2 slot in the Elecraft line needs filling! :-)

Mike / KK5F

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Eric Norris-2

Re: Elecraft KX1 - a builder's review

In reply to this post by Mike Morrow-3

My KX1 puts out over 5 watts when powered with an A123 LiFePO pack, and will run longer than I can from a small.4S1P battery. It fits perfectly into a Pelican 1060 box, which makes it nearly indestructible when using it to soften face plants while xc skiing. It's perfect as is, though a 40-20-15 version would be interesting.

I'd like to see a single-band KX0, the size of a Rockmite, a full 1-2 watts out, with attendant Elecraft mojo. THAT would be cool. It could use an outboard T1 for tuning wires.

73

Eric WD6DBM

Mike Morrow <[hidden email]> wrote:

>Phil wrote:
>
>> A reasonable assessment, Johnny. Of course the KX1
>> was designed as the ultimate Trail-Friendly Radio
>> (TFR) and that it is!
>
>I always preferred the K1 versus the KX1. I must have 15m,
>plus the KX1 really needs a four-pole IF filter, IMO.
>
>I have a dream of a KX2 that is a KX1 descendant, with four-pole
>filter, 15m and maybe other bands not on a KX1, back-lit LCD vs
>LED, noise blanker, and everything required for the band coverage
>laid out from the start in the design, and not as an after-
>thought. (As has been often noted, the KX1 is not particularly
>easy rig to build with all the options.) I'd also like to see
>5 watt output on all bands with 14 vdc power. Perhaps it could
>even be a factory-built SMT design. Finally, that KX2 would need
>an ATU capable of far more than 254 combinations of reactance
>insertion. The KAT1's 1022 combinations would be minimum, IMHO.
>
>A small, capable, simple-to-operate, very low-power-consumption
>QRP rig still has great appeal even with availability of the
>overwhelming capability of the KX3. I'd like to have both.
>
>...and the KX2 slot in the Elecraft line needs filling! :-)
>
>Mike / KK5F
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>Message delivered to [hidden email]

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Johnny Siu

Elecraft KX1 - a builder's review

Basic KX1 gives more power. I am not surprised for power output over 4W. However, with the addition of KXB3080 module, the low pass filter LPF1 is a compromise, it will be hard to squeeze power up to 4 watts.
73
Johnny VR2XMCKX1 # 2839
寄件人︰ Eric Norris <[hidden email]>
收件人︰ Mike Morrow <[hidden email]>
副本(CC)︰ [hidden email]
傳送日期︰ 2014年12月17日 (週三) 2:55 PM
主題︰ Re: [Elecraft] Elecraft KX1 - a builder's review

My KX1 puts out over 5 watts when powered with an A123 LiFePO pack, and will run longer than I can from a small.4S1P battery. It fits perfectly into a Pelican 1060 box, which makes it nearly indestructible when using it to soften face plants while xc skiing. It's perfect as is, though a 40-20-15 version would be interesting.

I'd like to see a single-band KX0, the size of a Rockmite, a full 1-2 watts out, with attendant Elecraft mojo. THAT would be cool. It could use an outboard T1 for tuning wires.

73

Eric WD6DBM

Mike Morrow <[hidden email]> wrote:

Eric Norris-2

Re: Elecraft KX1 - a builder's review

In reply to this post by Mike Morrow-3

My KX1 has the old 30m board. Its power output is 4,2w on 20m from a 13,8 supply., but approaches 7 watts with the A123 pack. Perhaps the 80m board lowers the output, I have no way of testing. I don't think 80m QRP is as popular on the Left Coast of the U.S as it is elsewhere. I rarely operate there anyway.

73

Eric. WD6DBM

Johnny Siu <[hidden email]> wrote:

>Basic KX1 gives more power. I am not surprised for power output over 4W. However, with the addition of KXB3080 module, the low pass filter LPF1 is a compromise, it will be hard to squeeze power up to 4 watts.
>73
>Johnny VR2XMCKX1 # 2839
> 寄件人︰ Eric Norris <[hidden email]>
> 收件人︰ Mike Morrow <[hidden email]>
>副本(CC)︰ [hidden email]
> 傳送日期︰ 2014年12月17日 (週三) 2:55 PM
> 主題︰ Re: [Elecraft] Elecraft KX1 - a builder's review
>
>
>
>My KX1 puts out over 5 watts when powered with an A123 LiFePO pack, and will run longer than I can from a small.4S1P battery. It fits perfectly into a Pelican 1060 box, which makes it nearly indestructible when using it to soften face plants while xc skiing. It's perfect as is, though a 40-20-15 version would be interesting.
>
>I'd like to see a single-band KX0, the size of a Rockmite, a full 1-2 watts out, with attendant Elecraft mojo. THAT would be cool. It could use an outboard T1 for tuning wires.
>
>73
>
>Eric WD6DBM
>
>Mike Morrow <[hidden email]> wrote:
>
>>Phil wrote:
>>
>>> A reasonable assessment, Johnny. Of course the KX1
>>> was designed as the ultimate Trail-Friendly Radio
>>> (TFR) and that it is!
>>
>>I always preferred the K1 versus the KX1. I must have 15m,
>>plus the KX1 really needs a four-pole IF filter, IMO.
>>
>>I have a dream of a KX2 that is a KX1 descendant, with four-pole
>>filter, 15m and maybe other bands not on a KX1, back-lit LCD vs
>>LED, noise blanker, and everything required for the band coverage
>>laid out from the start in the design, and not as an after-
>>thought. (As has been often noted, the KX1 is not particularly
>>easy rig to build with all the options.) I'd also like to see
>>5 watt output on all bands with 14 vdc power. Perhaps it could
>>even be a factory-built SMT design. Finally, that KX2 would need
>>an ATU capable of far more than 254 combinations of reactance
>>insertion. The KAT1's 1022 combinations would be minimum, IMHO.
>>
>>A small, capable, simple-to-operate, very low-power-consumption
>>QRP rig still has great appeal even with availability of the
>>overwhelming capability of the KX3. I'd like to have both.
>>
>>...and the KX2 slot in the Elecraft line needs filling! :-)
>>
>>Mike / KK5F
>

Johnny Siu

Elecraft KX1 - a builder's review

Old, yes, the old kxb30 did not need to reconstruct the low pass filter, hence no effect to power output. The newer kxb3080 requires a complete reconstruction of LPF

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