for the masses?
I am tickled to death for you. You though you'd be retired by now, huh?
bst 73
Robert W4RL Pensacola FL
Trustee of W4GCM
- Original Message -
From:
To: "AM Radio"
Sent: Tuesday, April 20, 2010 12:30 PM
Subject: [AMRadio] Retro-75
> gang-
>
>
gang-
The Retro-75 now has its own user group, thanks to the efforts of David
Searle, ZL3DSW.
it's: http://groups.yahoo.com/group/SWLRetro75/
73- Dave Benson, K1SW
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Sea
Brett may be right however, someone a while back had the same problem.
Who, skips me at the moment but it was someone who knew better than make
an attachment and no one could find out why. So this is the perfect
time to mention a couple of things.
1.If you use the Microsoft email client yo
I posted this on AM Fone but I'll toss it out here too, since we've been
talking about the Retro 75 a lot.
One idea for packaging would be to find a basic old mobile CB (working
or not) at a garage sale or thrift store. Gut it, and mount the Retro
75 board where the CB board used to be. You'd
Likely sent as an attachment which is blocked?
Brett
- Original Message -
From: "Bry Carling"
To: ; "Discussion of AM Radio in the Amateur Service"
Cc:
Sent: Sunday, April 11, 2010 9:38 PM
Subject: Re: [AMRadio] retro 75
That is the second blank message from a
...
Brett
- Original Message -
From:
To: ;
Sent: Saturday, April 10, 2010 11:53 PM
Subject: Re: [AMRadio] retro 75
> Hi Brett and the group. You guys are having way too much fun with these
> kits!! Just had a QSO with a few people and among them was Jack, W9GT and
> althou
That is the second blank message from a Jack Shutt this week.
What is going on?
On 11 Apr 2010 at 9:21, Jack C. Shutt wrote:
>
> __
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives:
> http://www.ma
ubject: Re: [AMRadio] retro 75
> Brett-
>
> If you're using an electret mike, did you add a bias pull-up resistor for
> it? My other thought is that the fairly low impedance looking into the
> mic input is affecting signal level and adding emphasis to the audio
> response.
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Our Main Website: http://www.amfone.net
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at the JFET
emitter, should be dominating the time constant on the detector circuit.
73- Dave Benson, K1SWL
> [Original Message]
> From: Brett Gazdzinski
> To:
> Cc:
> Date: 4/10/2010 11:21:53 PM
> Subject: Re: [AMRadio] retro 75
>
> Dave,
> As a big home brewer, I
John KX5JT
-Original Message-
From: Brett Gazdzinski
To: k1...@earthlink.net
Cc: amradio@mailman.qth.net
Sent: Sat, Apr 10, 2010 10:21 pm
Subject: Re: [AMRadio] retro 75
Dave,
As a big home brewer, I tend to pick things apart...
Besides the lack of agc, the receiver really works well for
for the fun kit!
Brett
N2DTS
- Original Message -
From:
To:
Cc:
Sent: Saturday, April 10, 2010 8:07 AM
Subject: RE: [AMRadio] retro 75
>
> Brett-
>
> Glad you found a solution. So far, I haven't heard from anyone else
> experiencing this issue.
>
> I s
dio output.
73- Dave Benson, K1SWL
> [Original Message]
> From: Brett Gazdzinski
> To: Discussion of AM Radio in the Amateur Service
> Date: 4/9/2010 10:41:08 PM
> Subject: [AMRadio] retro 75
>
> I did some signal tracing tonight, and found the 1 meg resistor off the
> detecto
I did some signal tracing tonight, and found the 1 meg resistor off the
detector seems to be the cause of my excessive rx audio distortion.
Not sure if the fet detector (Q3) is bad or not, but with a 100k in place of
the 1 meg, the audio cleans up nicely. I still have plenty of gain.
I am not su
I used a Cobra HG M73 CB dynamic mic I purchased on e-bay new for around $11
incl shipping.
Lee, w0vt
> Folks,
>
> When ordering the Retro 75 (which I did), there is a note on the
> website that says the recommended Radio Shack microphone is no longer
> available. I can't find the specs on t
Folks,
When ordering the Retro 75 (which I did), there is a note on the
website that says the recommended Radio Shack microphone is no longer
available. I can't find the specs on the RS mike - can any of you who just
completed the kit tell us what kind of mike you used?
Thanks,
Vic WB2STR
_
Its a direct conversion receiver, not sure how good those are.
My HW7 was a direct conversion receiver I think, and it worked.
Brett
- Original Message -
From: "Robert Nickels"
To:
Sent: Thursday, April 08, 2010 9:25 PM
Subject: Re: [AMRadio] Retro 75
> Those who
Those who lust after a portable 40 meter AM radio might be interested in
this 40 meter AM Handie Talkie from DZ Kit:
http://www.dzkit.com/new_products.htm#ht7
I have no knowledge about them at all, it is more expensive but is also
a complete kit with case, mic, etc. You can download the manua
scussion of AM Radio in the Amateur Service"
>
> Sent: Thursday, April 08, 2010 2:56 PM
> Subject: Re: [AMRadio] Retro 75
>
>
> >I have a Retro 75 and it is great. I also don't represent Dave
> Benson the
> > designer. That said I think Dave decided to design a
t
> N2DTS
>
>
>
> - Original Message -
> From: "LEE BAHR"
> To: "Discussion of AM Radio in the Amateur Service"
>
> Sent: Thursday, April 08, 2010 2:56 PM
> Subject: Re: [AMRadio] Retro 75
>
>
>> I have a Retro 75 and it is grea
not
during prime time.
80 and 40 meters weekend mornings are best for me.
Brett
N2DTS
- Original Message -
From: "LEE BAHR"
To: "Discussion of AM Radio in the Amateur Service"
Sent: Thursday, April 08, 2010 2:56 PM
Subject: Re: [AMRadio] Retro 75
>I have a R
On 8 Apr 2010 at 13:56, LEE BAHR wrote:
> putting a rig like this on 10 meters will require more parts, more
> stability, and much more expensive crystals,
Or there may be someone who has a large quantity of suitable
crystals at a bargain price (grin.) You just never know.
-~ø¤º°º¤ø~-"ßrÿ in F
r, KW-1 all the way down to an Ameco AC-1 clone and many QRP rigs.
Just my thoughts.
Lee, w0vt
- Original Message -
From: "CL in NC"
To:
Sent: Thursday, April 08, 2010 7:14 AM
Subject: Re: [AMRadio] Retro 75
> This is a neat little rig, but I agree with the fell
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/
On 4/8/2010 7:14 AM, CL in NC wrote:
> This is a neat little rig, but I agree with the fellow who said he thought a
> 10 meter version would be great.
Another option for 10 is to convert an old CB rig. I still have the one
Bob Heil put out that started with a surplus HyGain CB board and added
F
This is a neat little rig, but I agree with the fellow who said he thought a 10
meter version would be great. Before the first iteration of the Ten Ten club,
when it seemed like all my DX QSO's on 10 were with the British and Australians
and they seemed to always be running a rhombic antenna, I
S.D.R. -- Steve Designed Radio -- hehe I like it!
John KX5JT
-Original Message-
From: Bry Carling
To: Discussion of AM Radio in the Amateur Service
Sent: Thu, Apr 8, 2010 6:29 am
Subject: Re: [AMRadio] retro 75
That's one of the best homebrew pages I have ever seen!
Re
That's one of the best homebrew pages I have ever seen!
Real AM homebrewing with tubes in the 21st Century!
(and he's using a familiar-looking crystal in the 6146 rig!)
http://www.qrz.com/callsign.html?callsign=GW1XVC
73s - AF4K
On 8 Apr 2010 at 8:11, AirRadio wrote:
> My friend, Steve, GW1XVC
The only confusing me was that his circuit diagram doesn't
seem to show a crystal nearby, even though it mentions one
on the right side of the receiover diagram as "1/2 xtal osc TX."
I finally saw the osc below left running at 3615 kHz, the most popular
British AM calling frequency. I think the
My friend, Steve, GW1XVC has some interesting AM radio projects on his QRZ
page, I am sure one or three of you will be buying another roll of solder
shortly :-)
73
Max M0GHQ
--
I am using the free version of SPAMfighter.
We are a community of 7 million users fighting spam.
SPAMfighter has r
Why not discuss it here? That is one of the purposes of this list.
That type of discussion might spur other who otherwise would not join
another group because they belong to so many anyway.
Jim/W5JO
- Original Message -
>>
> I mentioned having a Yahoo group or such to Dave so we'd h
Dave Benson's company Small Wonder.
I have one too
Lee, w0vt
- Original Message -
From: "Bob Peters"
To: "'Brett Gazdzinski'" ; "'Discussion of AM
Radio in the Amateur Service'"
Sent: Wednesday, April 07, 2010 9:59 PM
Su
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
.
Brett
- Original Message -
From: "Robert Nickels"
To:
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 goin
igned for AM, think a simple
> CB
> set for 40 meters kit...
>
> Brett
>
>
>
> - Original Message -
> From: "Robert Lawson"
> To: "Discussion of AM Radio in the Amateur Service"
>
> Sent: Wednesday, April 07, 2010 9:48 PM
> Subject:
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 s
...
Brett
- Original Message -
From: "Robert Lawson"
To: "Discussion of AM Radio in the Amateur Service"
Sent: Wednesday, April 07, 2010 9:48 PM
Subject: Re: [AMRadio] retro 75
> My friend Ron N4RT built one and had a nice chat with Art N4JK about 90
> air
r here. Thanks Dave.
73 Robert W4RL
- Original Message -
From:
To: ;
Sent: Wednesday, April 07, 2010 8:23 PM
Subject: Re: [AMRadio] retro 75
>I also was thinking a 40 meter version would be really nice. At those
> qrp levels and with summer approaching it would be a winner!! He
: Brett Gazdzinski
To: Discussion of AM Radio in the Amateur Service
Sent: Wed, Apr 7, 2010 5:53 pm
Subject: [AMRadio] retro 75
Speaking of building, there is a new AM transceiver kit:
http://smallwonderlabs.com/Retro-75.htm
I built it, it works well.
I IS very simple, and lacks things like a good
Speaking of building, there is a new AM transceiver kit:
http://smallwonderlabs.com/Retro-75.htm
I built it, it works well.
I IS very simple, and lacks things like a good agc, variable filter, vfo, S
meter.
I let small wonder labs know a deluxe kit would sell like hotcakes at a
lumberjack conven
I got the PC board populated with all the parts this evening but as yet have
not tested it out. Everything went together as planned and I did not put
any parts in the wrong holes by mistake.
1. You need to cut wire for the toroids a little shorter then suggested, or
you will run out of wire b
I got the receiver portion of the transceiver built Friday night but as yet
have not tested it out. Hoping to build up the transmitter portion Sunday.
I was planning to build a case for it out of PC board material as I had done
for my Ft Tuthill 80 kit. (That case came out looking great)! Unl
Am very interested downloaded the manual allready,but was waiting on some
comments,like yours.
dale/ka5who
- Original Message -
From: "LEE BAHR"
To: "Discussion of AM Radio in the Amateur Service"
Sent: Friday, March 19, 2010 10:02 PM
Subject: [AMRadio] RETRO 75 B
well worth spent to keep mentally
active.
Regards,
Robert
- Original Message -
From: "Brett Gazdzinski"
To: "Discussion of AM Radio in the Amateur Service"
Sent: Friday, March 19, 2010 9:49 PM
Subject: Re: [AMRadio] RETRO 75 Build
>I ordered one a few days ago.
BAHR"
To: "Discussion of AM Radio in the Amateur Service"
Sent: Friday, March 19, 2010 10:02 PM
Subject: [AMRadio] RETRO 75 Build
>I have about 2/3 of the receiver built up on my Small Wonder RETRO 75 AM
>QRP
> transceiver. That maybe is around 80 parts mounted so far.
I have about 2/3 of the receiver built up on my Small Wonder RETRO 75 AM QRP
transceiver. That maybe is around 80 parts mounted so far.
So far, no missing parts and it is going together without a hitch. I did
substitute machine grade IC sockets, gold plated, instead of using the
stamped ones
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