[Elecraft] K3 transmit out of band question [ANSWERED]

[Bert Rollen]

Thanks David,

I do not need 27 Mhz, (just need lower end of 26 Mhz) so hopefully all would
work fine.

In fact, I do not need the PA enabled at all.

I will drop Elecraft a note soon.  (I do, BTW, have the KBPF3.)

One question perhaps may still be answered here; would I have to have a
special version of firmware each time the same is updated?  Or is the
unlocking software a one-time application?

Bert
 
Bert Rollen, PMP
rollen at comcast.net
865-599-6074


-----Original Message-----
From: David Anderson [mailto:gm4jjj at yahoo.co.uk] 
Sent: Friday, February 26, 2016 3:11 AM
To: Bert Rollen <rollen at comcast.net>
Subject: Re: [Elecraft] K3 transmit out of band question [ANSWERED]

Hi Bert,

As I understand it, and this is only what I have gleaned from others, is
that in order to TRANSMIT out of band you need the unlocking software (for
MARS frequencies etc) which Elecraft can supply if you explain why you need
it. I believe it is more or less general coverage transmit out of band, and
if you are a good bit out of band the KBPF3 will be required as well.

The only fly in the ointment is that 27 MHz is never properly unlocked in
case CB guys try to use the rig, and the power amplifier isn't enabled for
27 MHz (don't know the exact frequency limits). However this probably means
that the transverter ports would still work at those frequencies.

Best to drop a line to Elecraft Support or phone and ask the question.

Hope it goes well.

73 from David GM4JJJ

> On 26 Feb 2016, at 02:45, Bert Rollen <rollen at comcast.net> wrote:
> 
> Rats.  I was hoping for a broader answer.  
> 
> I have a custom 432 DEMI transverter with a *26* Mhz IF.  
> 
> Any ideas how well / if the K3 transverter output would work on 26 
> Mhz?  (I have the KBPF3)
> 
> Thanks,
> 
> Bert - K4AR
> 
>  
> Bert Rollen, PMP
> rollen at comcast.net
> 865-599-6074
> 
> 
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of 
> David Anderson
> Sent: Thursday, February 25, 2016 12:31 PM
> To: Elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 transmit out of band question [ANSWERED]
> 
> Elecraft have confirmed
> 
> "You would not need to use the KBPF3 for only 50 kHz out of band on 20M"
> 
> Great news.
> 
> Thanks to all you great folks.
> 
> 73 from David GM4JJJ
> 
>> On 25 Feb 2016, at 13:40, David Anderson <gm4jjj at yahoo.co.uk> wrote:
>> 
>> Thanks also to Ken K3IU who has tested his K3 with and without the 
>> general
> coverage bandpass filter enabled and found no difference in receive 
> sensitivity between 14.350and 14.400.
>> 
>> Question answered!
>> 
>> 73 from David GM4JJJ
>> 
>>> On 25 Feb 2016, at 12:46, David Anderson <gm4jjj at yahoo.co.uk> wrote:
>>> 
>>> Perfect many thanks Don.
>>> 
>>> 73 from David GM4JJJ
>>> 
>>>> On 25 Feb 2016, at 12:17, Don Wilhelm <w3fpr at embarqmail.com> wrote:
>>>> 
>>>> David,
>>>> 
>>>> Transmission only 50 kHz above the ham band should not be a 
>>>> problem.  If
> you see a dropoff in receive sensitivity, than add the KBPF3.
>>>> 
>>>> 73,
>>>> Don W3FPR
>>>> 
>>>>> On 2/25/2016 4:02 AM, David Anderson wrote:
>>>>> Still not got a definitive answer to my question, which I repeat:
>>>>> 
>>>>> K3 - Do I require the general coverage bandpass filter option to 
>>>>> allow
> transmission just for an extra 50 kHz above 14.350?  ( provided the 
> radio is unlocked for transmit beyond the ham bands).
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