Category Archives: Gear

Configuring TM-D710GA for APRS Indoors

That last word “Indoors”is the clue… The TM-D710GA has a built-in GPS.  Not surprisingly, it does not receive indoors, and it has no provisions for an external antenna (only an external GPS receiver). I had setup the radio for A-side … Continue reading

Posted in APRS, Gear, TM-D710GA | Leave a comment

Can You Trust Your RX For a FMT?

My go to ham rig is my K3s, which includes the KTCXO3-1 Temperature Compensated Crystal Oscillator, a device specified to maintain 0.5 to 1 PPM,  One might think that in a reasonably controlled environment that the K3s could be used in CW … Continue reading

Posted in FMT, Gear | Leave a comment

Restoring HP3335A Part 2

After cleaning the synthesizer inside and out, I replaced multiple screws that were missing from the internal metal frame, and bolted down the power supply, which was obviously replaced in the past (without putting it back in properly).  Despite the … Continue reading

Posted in FMT, Gear, Testing | Leave a comment

Restoring a HP 3335A to full operation

I’ve always been sort of a time nut, but that’s pretty closely related to frequency.  The ARRL helps to sponsor a periodic Frequency Measurement Test, usually held in April and November.  A good friend of mine, John WA1ABI, always participates … Continue reading

Posted in FMT, Gear, Testing | Leave a comment

Replaced my Mobile Mount Today

Back in March of 2013, I installed a Diamond K9000 Motorized Antenna Mount. Unfortunately it started acting up about five months ago after about 3.5 years of service mounted on a truck that leaves its garage about twice a week, … Continue reading

Posted in Gear | Leave a comment

A New Transistor for the Pixie

Of course the Pixie final transistor, Q2 S8050, gets darned hot, and I’ve blown one out in the past just holding the key down more than a few seconds.  With my Pixie + Red Core Filter, I was seeing about … Continue reading

Posted in Gear, Pixie, Projects, QRP | Leave a comment

Passing Pixie!

After experimenting with T37-6 yellow core inductors, it was time to change to the T37-2 red core.  These have a lower operating frequency, up to 10 MHz, and it is possible that they might have a higher attenuation on 14 MHz … Continue reading

Posted in Gear, Pixie, Projects, QRP | Leave a comment

A 40 Meter LPF for the Pixie

As I mentioned the 40-meter Pixie QRP rig has pretty horrible harmonics, well above the maximum allowable FCC limit (-43 dBc).  One Pixie was about -9 dBc, and the other was about -20 dBc. The output filter in the Pixie … Continue reading

Posted in Gear, Pixie, Projects, QRP | 1 Comment

Pixie Pain

There is an inexpensive QRP kit that sells on eBay for somewhere between $4-10, called a Pixie.  It is a single conversion rock bound 40 meter QRP rig often set to 7.023 MHz, but sometimes 7.040 MHz.  They are often … Continue reading

Posted in Gear, Pixie, QRP | 1 Comment

K1 Tuner Completed

It took about an hour to wind the 5 inductors and install the remaining components, so the entire kit took about 2.5 hours to assemble.  Some minor changes need to be made to the K1 itself, and the meter circuit … Continue reading

Posted in Gear, QRP | Leave a comment