OK let's see if this works?

Photo showing 8watts powered at 12v

Photo showing 13watts powered at 13,5v

In to 50ohm dummy load?

On 28 Nov 2017 14:00, "chris gress" <Chrisg0wfh@...> wrote:

OK I don't have PC I see if I can do it with my phone chris

On 28 Nov 2017 13:48, "Gordon Gibby" <ggibby@...> wrote:

Would you be able to scribble down a portion of the schematic, putting the original capacitors etc in black, and your changes? for 60 meters?in RED or some other color, and then take a photo with a cell phone camera and post it here for posterity?? ?That might help out other people......

Gordon?

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From: [email protected] <[email protected]> on behalf of chris gress <Chrisg0wfh@...>
Sent: Tuesday, November 28, 2017 8:37 AM
To: [email protected]
Subject: Re: [BITX20] First real try at 80 meters using QRPKITS 80M low pass filter

?

I need to correct one thing it should be 100pf on L7 not 470pf sorry chris

On 28 Nov 2017 13:33, "Gordon Gibby" <ggibby@...> wrote:

?thank you for that infomration!!!!

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From: [email protected] <[email protected]> on behalf of chris gress <Chrisg0wfh@...>
Sent: Tuesday, November 28, 2017 8:32 AM
To: [email protected]
Subject: Re: [BITX20] First real try at 80 meters using QRPKITS 80M low pass filter

?

Nice for 60m add the 470 to L7. And add 150pf to each cap C2,C4,C6 to the bpf I get 8watt with 12,2v and 10watt with 12,8v chris

On 28 Nov 2017 13:26, "Gordon Gibby" <ggibby@...> wrote:

?very cool.? ?I'm using the cheap solution of a 470 pf strapped from one end of the BPF to the other so I don't know exactly where it is optimized....perhaps I can get some rough measuresments of that by looking at received signal....

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From: [email protected] <[email protected]> on behalf of chris gress <Chrisg0wfh@...>
Sent: Tuesday, November 28, 2017 8:04 AM
To: [email protected]
Subject: Re: [BITX20] First real try at 80 meters using QRPKITS 80M low pass filter

?

I found my bitx on 80m gave 5watt on 3,799 and on 3,500 gave 6watt I got a lpf /bpf? coming from QRP labs the ones I was using where copy's and not working well but my bitx on 60m I get the same power as my 40m one and it works well?

Chris?

On 28 Nov 2017 12:36, "Gordon Gibby" <ggibby@...> wrote:

?I'm sorta simple and goal directed --- In the prototype version for the ARES group I'll add another toggle switch to switch an 80 meter LPF in and out somehow.? ?I? *thought* I had seen higher output on an earlier much simpler trial --- but was rushed and just got the basics going, will fiddle more with it later.

Used it later in the evening to make WINLINK connections to 3 different RMS servers in different states.? ?

In the middle of the night, the Critical Frequency lifts a bit in the southern US and it went above the 80 meter band & I was able to get a strong signal from a WINLINK RMS just 65 miles from me --- way too far for ground wave, but even with just 5 W output was able to transact email with that RMS (tho it took a lot of repeats)

It is so neat to be able to shift this rig to different bands!!!!!? ?Been doing ham radio for about 45 years, this is the first time I've really gotten into the guts of drastically modifying any rig.? ?This is just like a solid state version of a Heathkit SB-102 transceiver.? ??

Gordon?

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From: [email protected] <[email protected]> on behalf of Ryan Flowers <geocrasher@...>
Sent: Tuesday, November 28, 2017 3:53 AM
To: [email protected]
Subject: Re: [BITX20] First real try at 80 meters using QRPKITS 80M low pass filter

?

Very nice! A simple way to go to 80m, certainly simpler than my multi-band conversion.?
--
Ryan Flowers W7RLF