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In the midst of this weekend's California QSO Party, I heard VY1JA calling CQ, looking for the Californians. It had been several years since I last heard VY1JA and the last time that we worked was on 137kHz on the 2200m band.

The CQs continued without much luck as the Californians just didn't appear to be hearing (or looking) to the north ... missing one of the rarest multipliers in North American contests.

Now, I had recently read that the VY1 station had been experimenting with remote operation, so that hard core, experienced contesters, could have the opportunity to hand out the rare 'NT' (Northern Territories) multiplier in future contests ... especially in the popular November ARRL Sweepstakes. I assumed that the station was likely being remotely operated.

After listening to a lot of CQ's going unanswered, I swung the beam towards Whitehorse and sent, "ur 599 down in VE7 land" and sent my call. Much to my surprise, it was my dear old friend 'J' himself, operating the station. What followed was a 10-minute catch-up on what he had been doing over the past few years and his plans for the future.

J in Nunavut as VYØJA

Since we had last worked on 2200m (we both had 'experimental licences at the time since 2200m was not yet an allocated ham band), J had retired ... un-retired for several years of contract work in the Arctic ... and ...re-retired once more, this time for good. With the help of some dedicated contesters, along with a 'gofundme' project on Facebook, J has been re-building his fine station from the ground up. Maybe you would also like to help.

Future plans, now well underway, call for multiband V-beams (520' legs) at 70' aligned to the SE and NW  and some high metal on a pair of 100' towers for the HF bands. As well, a new K-3 will drive an Alpha 9500 amplifier on all bands.


A few of the 20 poles, ranging from 70' to 30', that will be used to support V-beam legs and elevated groundplanes for the low bands.

I've saved the best news for last. J told me that he really wants to get going on 630m as well! His signal will be a wonderful addition to the band as he should be workable by most of the western provinces on nights of normal propagation. I am very much looking forward to working J again on the LF bands, recalling how strong his 100W signal could get during several of our early-morning 2200m CW ragchews.

Welcome back J!
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].

In this episode, Martin M1MRB / W9ICQ is joined by Ed Durrant DD5LP ,Martin Rothwell M0SGL and Matthew Nassau M0NJX to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature is The Humble Capacitor

• RSGB Takes Over Radio Exam Management
• LilacSat-2 – Linux Live CD for Telemetry Decoding
• Amateur Radio Society and CB
• UK Shipping Forecast on LW to End?
• Proposed German SDR Network
• QRO Club - Free DXpedition Travel Amps
• Fox Telemetry Decoder Software Version 1.0
• FreeDV Fortnightly Europe-wide Net / Test Session
• Lundy DX Group 2015

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

In this episode, Martin M1MRB / W9ICQ is joined by Ed Durrant DD5LP ,Martin Rothwell M0SGL and Matthew Nassau M0NJX to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature is The Humble Capacitor

• RSGB Takes Over Radio Exam Management
• LilacSat-2 – Linux Live CD for Telemetry Decoding
• Amateur Radio Society and CB
• UK Shipping Forecast on LW to End?
• Proposed German SDR Network
• QRO Club - Free DXpedition Travel Amps
• Fox Telemetry Decoder Software Version 1.0
• FreeDV Fortnightly Europe-wide Net / Test Session
• Lundy DX Group 2015

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

About a week ago, I received this e-mail in my G-mail account from Scott N0HOT. I don't check my G-mail account on a daily basis, so I didn't discover this until yesterday:

https://drive.google.com/file/d/0ByXPhBf853_qaDVTemNEVklzVkttODFaRlJfSGdVcGpWQV9R/view?usp=sharing

As a Morse Code fan, I thought this was pretty nifty! I don't plug may people's products on this blog, but I thought this was neat enough to warrant an exception.  I guess I'm like Dan KB6NU, in that I consider myself a CW Geek. And for 99 cents, it's not like it's going to break the bank or anything - right?

So I think I'm going to pop on in to the iTunes store (if I can ever remember what the heck my Apple password is) and will purchase this little app.

Well played, Scott. Well played, indeed.

72 de Larry W2LJ
QRP - When you care to send the very least!



Larry Makoski, W2LJ, is a regular contributor to AmateurRadio.com and writes from New Jersey, USA. Contact him at [email protected].

Power... or lack thereof

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

Today, through the post, I got my November 2015 copy of Practical Wireless. Suspiciously I could find no pictures or mention of the ICOM IC7300 transceiver in any advert at all. It is almost as if all the dealers have been told in no uncertain terms to sell the current products and, on pain of death, do not under any circumstances mention the IC7300. I am not saying this as fact, but it is all rather odd. A month ago everyone was full of the news and products were expected to ship by the year end. Perhaps ICOM have had second thoughts or were losing sales of current products?

There were plenty of adverts for the Yaesu FT991, although even the best published prices have since been bettered. No, I am very suspicious about why there is no mention of the IC7300. Just one dealer OK, this I could believe, but all of them tight-lipped???

ICOM what is behind this? Is there a story we are not being told?

Roger Lapthorn, G3XBM, is a regular contributor to AmateurRadio.com and writes from Cambridge, England.

Some time ago I noticed that the Ublox Neo-7M GPS has a 10 MHz output which is locked to the GPS system’s accuracy. Most people kept saying how useless it was due to excessive jitter unless it was cleaned up with a phase locked loop of some sort.

At about the same time I installed the external reference input for my Elecraft K3. The K3EXREF enables the K3’s frequency to be locked to an external 10 MHz reference. What struck me was how its function is described:

• The frequency of the internal oscillator of about 49.38 MHz is continuously measured and averaged, obtaining a value to the nearest 1 Hz.
• The K3EXREF does not phase lock the K3’s reference oscillator and the external 10 MHz source has no impact on the K3’s phase noise performance.

This got me wondering if the Neo-7M would be just good enough as a reference and that all the averaging internally to the K3 would take care of the jitter.

I ordered one from Ebay for USD 12-13 together with an USB interface (USD 1.5) and hooked it up. (Actually the NEO-7M already has a built-in USB interface, but my board doesn’t support it). The result is shown above as assembled in a clear top tin. In my wooden house I can receive GPS indoors, so I have no need for an external antenna

The K3 accepts the input and I see the star in REF*CAL blinking. Just after turn-on of the K3 my 49.38 MHz reference frequency ends in …682 and after 10-15 minutes it has fallen and stabilized to …648, i.e. 34 Hz down in frequency. This is just 8 Hz off the reference value I determined manually was the right one when my K3 was new in 2009 (49.379.640).

All this taken together indicates to me that the K3 finds this 10 MHz acceptable for locking. The measurement to the nearest Hz, implies a measurement time of the order of 1 second and that seems to be enough to smooth out the jitter from the Neo-7M.

In order to get this to work I had to do some modifications to the GPS unit. First I had to get access to the timepulse on the chip’s pin 3. My connection is inspired by that of G4ZFQ and consists of a small wire from the left-hand side of the 1k resistor to the upper left hole. From there another grey wire goes below the chip and to the 5-pin header which is soldered to the Vcc, Rx, Tx, Gnd pins. The 5th pin is cut off and is just attached to the other pins through the plastic hardware.

The second modification was required in order to get it to run from the somewhat noisy USB 5 Volt supply. That took some decoupling between the Vcc and Gnd pins (220 uF and 0.1 uF in parallel), visible to the right in the image above, using good engineering practice to keep the wires as short as possible.

The timepulse is a 3.3 Vp-p output which cannot drive anything below 400-500 ohms impedance. Therefore I added a 74HCT04 driver that I have assembled on a little homemade SMD to DIL adapter PCB (easy to find on Ebay). It serves as a driver to feed the 10 MHz to the 50 ohm input of the K3EXREF.

The HCT04 IC has 6 inverters. One of them takes the input signal from the Timepulse output of the GPS IC and buffers it to drive the 5 other inverters in parallel. This is shown in the schematics at the end of this blog post.

The 5Vp-p output from the buffers is fed via 56 ohms to a connector that goes to the K3EXREF input. This is in accordance with the K3EXREF manual which says: “The 10 MHz source should have a signal level between +4 dBm and +16 dBm, nominal. For square wave sources, 2VDC to 3.3VDC peak is optimum. If the source is a 5V logic level, use a 50-ohm resistor in series with the input.“

See also

• Better with SMA
• Curing amnesia in the 10 MHz GPS reference
• Improved GPS reception with a ground plane

Sverre Holm, LA3ZA, is a regular contributor to AmateurRadio.com and writes from Norway. Contact him at [email protected].