HB2HB! KW4KD and N2CQR (video)

A couple weeks ago I ran into Jim KW4KD on 40 meter SSB.  Jim is in Chattanooga, Tennessee.  He was running a modern "black box" rig, but he mentioned that he had on the shelf two complete homebrew stations, one of which was for 40 meter SSB.  He hadn't used this gear in 40 years.  I encouraged him to blow the dust off and get it on the air.  Yesterday, Jim did just that.   We met up on 40, first at 1730 local (my time) and again at 1930.   Excellent!  Another HB2HB contact.  Check out the video (above).   Thanks Jim.

If you run into someone who mentions having some old homebrew gear, encourage them to blow the dust off and get it on the air.

Jim's SSB rig:

Blowing the Dust Off of KW4KD's Homebrew Station from the 1970s

KW4KD CW TRANSMITTER

I got on 40 meter SSB over the weekend and spoke to Jim KW4KD.   He was on a modern commercial rig, but then he told me he had some homebrew gear on his shelf...  Wow, it is magnificent.  A complete CW station (with homebrew keyer) AND an SSB rig. I immediately launched a campaign to get Jim to fire that gear up and to provide opportunities for more HB2HB contacts.   Here is his description of the equipment:

Hi Bill,

It was a blast to get to chat with you too.

Just listening to the audio on this end, I can tell you’ve put a lot of time and effort into getting what you have there up and running.

Never once touched the dial on this end. So your radio gets a A+ for stability too.

Read your Bio on QRZ and sounds like you’ve been a few places, and seen a few things, and that unto itself would make a great contact . But for me, the fact that you are out there building, and I ‘m getting to hear the fruits of your efforts, is ham radio at its best.

 

Attached are pictures of the gear that made up my station back in the 70’s.

FWIW: At that time my call was WB4YQC.

(But for the record, these shots were taken today.)

In those days I had two setups (Both on 40 mtrs).

A CW station, using separate Xmtr & Rcvr, And a SSB xcvr.

By themselves the CW xmtr ran 8 to 10 watts, and the SSB unit probably hit 5 Watts peak (on a good day).

Like you, I had a separate linear. But in my case I used a pair of 6DQ5’s (TV Sweep tubes) that would run about 180 watts input, (Nothing Solid State, that I could afford, could make that kind of power back in then). The linear is still here, but stashed away in a closet somewhere, so not shown in today’s set of pictures.

As an Add-On for the SSB unit, I built a Frequency Counter, and used it as a digital dial.

The counter is unique in that it supports two inputs (one for the VFO, and the other for the Xtal BFO). In the 2 input mode, the counter is an UP/Down counter.

The Xcvr’s BFO runs at 9Mhz, while the VFO runs at ~2Mhz. So the counter counts up on one pass, and then down on the 2nd. At the end of the 2nd pass, it updates the Display with the final tally. (i.e, the effective TX/RX freq)

The cases for the Xmtr & Xcvr were designed by me, but were built by a friend who had access to a metal brake. Internally none of the units are especially pretty, as the were always works in progress.

I’ll have to dust off the linear. Its been at least 40 yrs since its seen AC.. Not sure what kind of shape the electrolytics are in.

Probably need to apply power slowly. I’ll see if I can round up an Autotransformer.

As far as posting on your blog, if you think it will encourage others, I’d be flattered if you did;

However, before anybody asks, (assuming that they might) there’re no schematics. Everything was built from sketches made on envelopes and napkins, which have long since disappeared. And even if they did exist, not sure today that you’d be able to find some of the ICs & transistors that the units use.

Again, it was my pleasure to catch you on the band today, & look forward to getting to hear you again.

73  Jim (KW4KD)

KW4KD CW TRANSMITTER WITH HB KEYER

40 Meter CW receiver on Left

40 meter SSB transceiver with freq counter

HB2HB QSO with N6ORS -- MIN-X to BITX

That's Keith N6ORS's MIN-X transceiver.  Keith explains that it has circuitry from the BITX, the Minima and even from the ZL2BMI DSB rig.  We featured the MIN-X before, when it was still outside the box:
http://soldersmoke.blogspot.com/2016/01/n6orss-min-x-crosses-pond-on-first.html

I was on twenty today with my BITX, finishing up a rather disheartening contact with a fellow who told me that he is a "checkbook operator." I was trying to encourage this fellow to build something simple -- perhaps a Michigan Mighty Mite?  He told me that he might give it a try, but only 16 years from now, after he retires.  It was like a case of the Anti-Knack!  Then Keith N6ORS saved the day by calling in with his beautiful MIN-X HOMEBREW transceiver.  We had a nice talk -- Keith mentioned the beauty of Pete's "Blue Rig." That's HB2HB (phone) QSO #5 for me.  Thanks Keith! 

Bill,
That was great fun!
I was just tuning around and heard you mentioned the Michigan Mighty Mite
so I stopped to listen and realized it was you!
Well here was my chance for a homebrew to homebrew with 'the man' himself.
I wanted to record it but missed the chance.
Here is the Min-x boxed up. the case is made from thrown away computer cases.
It runs about 70watts on 160,80 and 40 meters and about 35watts on 20 meters.
I promise to write it up, maybe even draw a schematic. hihi.
73,
Keith N6ORS 

Here' a short clip of the MINX in action:

HB2HB! AC9JQ -- N3FJZ on 40 with Homebrew Rigs

On Saturday October 24,  Dean AC9JQ (Indiana)  and Rick N3FJZ (Maryland) made contact on 40 meter SSB using Si5351/TIA BITX rigs.  FB!:

Bill:

Dean and I made contact.  We both were in and out most of the time, but conditions seemed to improve towards the end where I could understand Dean about 90%.  Using the RST "by the book", I would say he was a 33, 3 =(readable with some difficulty), and signal strength was 3=(weak), and based on what Dean was reporting, my signal back to him was the same - 33.

73 to you both.

Rick - N3FJZ.

HB2HB! AC9JQ and N2CQR Make Contact on 40 with Homebrew Rigs on Both Sides (with help from N3FJZ/HB)

This weekend brought another HB2HB (Homebrew to Homebrew) contact.   We have been following with interest the 40 meter transceiver project of Dean, AC9JQ.  Above you can watch a video of Dean's rig in action before it went into the box.  Earlier this month Dean achieved a remarkable "Double First" when he made his very first amateur radio contact.  He was using his homebrew rig to do it.  So his first contact was also his first homebrew contact.   FB. More info on Dean's rig and homebrew exploits can be seen here:
http://soldersmoke.blogspot.com/search?q=ac9jq 

This week Dean got a decent 40 meter dipole up in the air.  We arranged (via e-mail) to meet on 40 on Friday evening.  We made contact, but conditions weren't great.  We tried again several times on Saturday, looking for open spots amidst the madness of the CQ WW DX contest.  Rick N3FJZ joined us and also tried to make contact with Dean, but had no luck either.  Daytime conditions didn't allow for a good contact between Indiana and the Washington/Baltimore area where Rick and I are located. 

Finally, last night after family obligations at both ends settled down, Dean and I found a relatively open frequency on 40 and made a good contact.  A short snippet of it can be heard by clicking on the link below.   Keep in mind that Dean was running about 2 watts to a dipole on 40 at night.   

http://soldersmoke.com/HB2HBAC9JQ.mp3

Thanks Dean!  Thanks Rick!

HB2HB! N3FJZ-N2CQR Si5351 and BITX TIAs on Both Sides, with Some LBS and Peter Parker Circuitry Too!

In those dark days of February 2015, when all the members of the SDR ESSB Panoramic Spectral Police were on my case over some imperfections in my 40 meter homebrew SSB signal, Rick, N3FJZ came to my rescue by sending me a great YouTube video of his reception of my new rig.  Rick was using a wonderful homebrew Direct Conversion receiver with a really cool PTO.   Here is my blog post on Rick and his receiver:

http://soldersmoke.blogspot.com/2015/02/parasitic-anguish-on-40-then-homebrew.html

Then, yesterday, I received this e-mail:

Bill, Pete,

I want to share my excitement with you.

After 32 years as a ham, I finally had my first ever HF QSO on October
16, 2015, and on a homebrew rig no less!  Oh the Joy of Emission!It was on 7.242MHz, 8:00 a.m. eastern on the "Woodpecker net".
- Rig was based on the Bitx, using ZIA bidirectional amps.
- 20 Watts into a 80 meter full-wave loop up at 20 feet.
- 600 ohm homebrew open wire ladder line.
- Balanced antenna coupler inspired by the Annecke and Johnson matchbox
units.
- and most importantly, the Arduino controller software and use of the
Nokia display were derived and inspired from Pete's "Let's Build
Something" code presented on his website, and the carrier
oscillator(BFO) & L.O. are generated by an Adafruit SI5351 clock
generator board.  Thank you Pete.

See my N3FJZ look-up on QRZ.com for photos of my homebrew rig. I have
also put links to the SolderSmoke blog and to Pete's web page and blog.

I just want to tell you both that your podcasts, websites, circuit
diagrams and stories were a huge part of my success.  They were the
inspiration I needed on many dark days when my amplifiers would
oscillate, and my oscillators would simply smoke.  At times I thought I
would never get on the air, but an hour listening to SolderSmoke podcast
would give me the drive venture on.  Thank you!

***VERY IMPORTANT!!!!

Bill, during my first QSO, I was getting 5x8 and 5x9 signal reports
(with 20 watts!)from North Carolina, up-state New York, Michigan, and
Indiana, and I know we are only about 50 miles apart (I'm in north
central Maryland), so I believe we could probably achieve a successful
HB2HB contact if you want to try.

If you want to, and have the time, you could join me on the Woodpecker
net any Friday, Saturday or Sunday on 40 meters 7.242MHz 8:00 a.m.
eastern, or we could set-up a prearranged contact on a General class 40
meter frequency of your choosing.  Let me know - making an HB2HB
contact with you would mean the world to me.

Pete, I also extend this invitation to you as well, but with only 20
watts on my end, it may be a stretch, but we could try.

Thank you both again for the joy you have given me with your pod-casts.
73
Rick - N3FJZ

.................

Rick and I got together on 7.288 MHz yesterday evening.  It was a really amazing QSO.  Rick made a video of it (see above) and I recorded the audio on my side.  My old tape recorder didn't do Rick's signal justice -- it sounded better than this.  But here is the full QSO:

http://soldersmoke.com/N3FJZN2CQR.mp3

Be sure to listen closely at around 21 minutes when Rick describes a software feature that allows him to switch -- with the touch of a button -- from high side VFO to low side VFO.  The BFO frequency also changes to account for the resulting sideband inversion.  Very cool.

Rick's Digital Board

Ricks Rig as it was during our QSO

 

Crystal Filter

Rick's Dual HEXFET Power Amplifier

 

Check out the N3FJZ QRZ.com page for more info. 

 

CONGRATULATIONS TO RICK!  



HB2HB -- Homebrew Rigs on Both Sides of the Contact

As I've been saying on the podcast, contacts in which both operators are using homebrew gear are increasingly rare, especially on SSB, and especially, it seems, in the USA.  So let's chronicle these rare events.  I've started a Label here on the blog called HB2HB.   Send me reports of good HB2HB contacts -- recent or past -- and I'll try to get them onto the blog. 

I've already described my recent QSO with Pete, N6QW.   My second HB2HB from this location took place on 12 October 2015.   I talked to Jeff GW3UZS in Cardiff, Wales on 17 meters.  I was using my trusty BITX17.  Jeff was running a much more sophisticated homebrew rig -- see above.  More details on Jeff's beautiful rigs are on his QRZ.com page"

https://www.qrz.com/db/GW3UZS

So send in HB2HB reports.  These contacts are almost in "endangered species" category -- they deserve to be preserved!

First Ever SSB Homebrew to Homebrew Contact by N2CQR. With...

2322 miles.  3737 kilometers

Pete Juliano and I were talking on Skype yesterday evening.  He was regaling me with tales of the wonders of his new beam antenna.  He mentioned that he was working a lot of East Coast stations... Wait a minute, I thought, I'm an East Coast station.  And I have a 20 meter rig sitting right in front of me.  "Meet me on 14.190 Pete!"   It took me a minute or so to get the rig connected to the CCI amplifier and the 20 meter dipole.  By the time I got everything fired up, there was a station on the frequency.  I thought we'd lost the spot.  But no!  I realized it was Pete calling me. 

This was extremely cool.  Pete was using his ZIA rig with the brand new beam.  I was on my VFO BITX20.  And I was using the CCI amp that Pete had coached me on (he taught me how to tap the holes for the heat sink).

This was the first time I had ever contacted another homebrew SSB station -- and the first time Pete and I had spoken on the air.  THE RADIO GODS WANTED THIS ONE TO HAPPEN! 

I recorded the QSO:

http://soldersmoke.com/n6qwn2cqr.mp3

I will ask Pete to provide more detail regarding the California end of this QSO in the comment section below.  Did you have your amplifier on Pete?

I Too Built a Tuna Tin 2

I didn't plan on doing this.  I didn't even really want to do this.   I've become a phone guy -- I'm not into CW anymore.  I figured I'd just finish the Herring Aid 5 receiver and settle the score from 1976 and that would be it.  But everything I read about the Herring Aid 5 included references to the iconic Tuna Tin 2.  Obviously I was also under the strong influence of my late February encounter with the original TT2 at the Vienna Wireless Winterfest.  That Mojo is powerful stuff!   Then my wife brought home this can of Russian tuna.  The dimensions were perfect.  Then I looked in my junkbox and found 40 meter CW crystals.  That was it. I had to do it. 

I built mine Manhattan style, using several of W1REX's fantastic Me-pads.   I also used as the final a transistor that Rex gave me at Winterfest. Thanks Rex.  Soul in the New Machine. 

I'm getting about 200 mW out.  I;m on 7030 kHz and 7040 kHz and 7110 kHz.   I have the TT2 up with my Drake 2-B (Herring Aid 5 integration will come later).  I can feel the Mojo. 

I just had my first contact with the TT2:  I called CQ on 7110 and AB2RA came back.  Jan was running 20 watts from an old 807 rig, listening with an old Hammarlund.  So it was HB transmitter and vintage receivers on both ends!  FB!





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