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DK7FH Germany flag Germany

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QSL: Don't collect qsl cards. See biography for details.

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Ham Member Lookups: 2033

 

Welcome on my page!

QSL - see below

My hobby startet when I was a pupil. I went to a school in which the director was radio amateur. Thanks to Walter, DJ5UD (s.k.) who supported interested students by all his capabilities.  Thanks also to Ray, DK4ZA, a 2 years older schoolboy, who finally infected me with the virus of getting the licence. I learned a lot from him, in self education and finally in a 3 weeks trainig course of the German Amateur Radio Club DARC. So I gladely got licenced with the call sign DK7FH in 1971 in the age of 16 which was the minimum legal age at that time.

From the beginning  I was fascinated by homebuilding qrp rigs and practicing cw. As a student of dentistry my interests moved to various other themes and so I was qrt for allmost 30 years. I was drawn back to my former hobby when a college, who has his practice close by mine, outed himself as radio amateur. Thanks to Hardy DK4KA for re-infection. This was my lucky comeback to what I do today:

It is still qrp, homebrewing and cw. New is SOTA and meanwhile GMA, which I practice since 2014. Also I like participating in various cw contest, which off course boiles on a small flame because of my limited power, antenna and time conditions.

Qso style I like ranges in between short standard and rag chewing, always happy to get some individual information about my qso partner. If we meet in cw, don’t bother me for my ‘pse qrs’. Specially in plain text I am not a HSC candidate!

Other hobbies?

As I am married and have 2 school children the time I can spend with ham radio activities is not to exuberant and often reduced to the dark hours of the day, when family is sleeping…or not yet awake, hi. I dream of playing golf again....

My regular rigs are:  K2 in qrp-version, KX2, MTR-3, AT Sprint 3b and sometimes mobile TS-50.

Antennas: 2x15m symmetric fed dipole abt. 9m up matched by different Z-matches and a hexbeam by folding antennas which has not yet reached his final position and adjustments. My SOTA antenna usually is a 20m endfed longwire matched by a Fuchs circuit.

Qsl’s?  I do not collect qsl cards. Generally I believe in call signs and personal informations of my ham colleges. Don’t need further proofs. If you want to have a qsl, send me an email with the data of the qso. I'll send you the qsl as jpeg.

The fotos below shall give you some impressions of my amateur radio activities.

Mni 73’s and 72’s and hpe cuagn!

Frank, DK7FH

 

one of my older qrp rig formation in my 1,80x1m shack.

Self assembled smd kit: 6 bands selected by changing filter boards. It is an amazing little cw trx.

Specifications:

  • Frequency coverage: 80/40/30/20/17/15 meter bands
  • Receiver MDS, 0.2 uV
  • Small signal bandwidth 500 Hz
  • Receive current, no signal 35 ma.
  • 50/100 Hz tuning steps
  • RIT/XIT tuning modes
  • Transmit power output: 2.5 watts at 9V , 4.5 watts at 12 V
  • CWshaping, 2 ms rise and fall time
  • Spurs: -45 dBc or less
  • Transmit current: 460 mA at 9 V , 610 mA at 12 V
  • PA over current detection at 820ma
  • 5 to 35 wpm Iambic keyer with 3 message memories
  • Supply voltage: 5.5 volts minimum, 12 volts maximum
  • Board and one filter module, no case 1.1 oz.

Worth visiting for further information:

https://groups.yahoo.com/neo/groups/AT_Sprint/info

I use a capacitive key for feather light keying by M0UKD, which I modified and integrated into the candy case. On the left side you see a resistive bridge for tunig the antenna. Capacitive paddles below:

This is the old complete SOTA rig:

Meanwhile (2016) I often use the LNR Mountain Topper (MTR-3 by KD1JV). It provides 40-30-20m with low current consumption as an ideal portable trx in a small size case:

During my SOTA-trips I prefer as antenna a 20m long EFHW. Matching is here done with a Fuchs-circuit. I throw this antenna with a lead weight into trees, easily reaching hights of 15m. When sufficient trees are missing, a 10m fibreglas rod does the job.

 

My latest acquisition ist the Elecraft KX2 with internal ATU which I proudly present here during the GMA-activation of DA/NW-001 on June, 16th, 2017:

 

8284347 Last modified: 2017-08-20 20:09:10, 7315 bytes

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