[AMRadio] retro 75


LEE BAHR pulsarxp at embarqmail.com
Wed Apr 7 23:08:53 EDT 2010


Dave Benson's company  Small Wonder.

I have one too

Lee, w0vt



----- Original Message ----- 
From: "Bob Peters" <rwpeters at swbell.net>
To: "'Brett Gazdzinski'" <Brett.gazdzinski at verizon.net>; "'Discussion of AM 
Radio in the Amateur Service'" <amradio at mailman.qth.net>
Sent: Wednesday, April 07, 2010 9:59 PM
Subject: Re: [AMRadio] retro 75


> If I may ask a stupid question where do you find these kits???
>
> Bob W1PE
>
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Brett Gazdzinski
> Sent: Wednesday, April 07, 2010 9:54 PM
> To: W9RAN at oneradio.net; Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] retro 75
>
> Well, I did not try it on TX yet, as the modulator chip is backordered.
> I do get 2.5 watts carrier out though.
>
> I like designs with no rf amp before the mixer, that is what I do with the
> homebrew receivers, and the retro does the same thing, the filter works
> well, but without any agc, strong signals get a lot louder than weak ones
> do.
> I also have distortion on strong signals, not real bad but its there, but
> maybe from the guys who modulate way over 100%, but I have to make some
> tests...
>
> Like some other kits I have built, I am always amazed at how well a small
> handful of parts can work.
>
> Brett
>
>
> ----- Original Message ----- 
> From: "Robert Nickels" <ranickel at comcast.net>
> To: <amradio at mailman.qth.net>
> Sent: Wednesday, April 07, 2010 10:21 PM
> Subject: Re: [AMRadio] retro 75
>
>
>> On 4/7/2010 5:53 PM, Brett Gazdzinski wrote:
>>> I built it, it works well.
>>>
>>>
>> Great to hear Brett!   That was going to be my plan today, but I had a
>> date with Turbo Tax instead ;-(    I'm really impressed with the design
>> and am anxious to get mine going.
>>
>> I mentioned having a Yahoo group or such to Dave so we'd have a spot to
>> share pictures and best practices, but he's pretty busy just getting the
>> kits out.   So maybe someone will start one up  (I'm busy soldering!)
>>
>> 73, Bob W9RAN
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