Crystal Radio Notes Archive
— David Wagner 2007/09/25 00:12
Tuggle Tuner
$C_ant["pF"]=1/(1/$v["C_ant"]["pF"] + 1/$v["C_ant_load"]["pF"]);} $C_gnd["pF"]= $v["C_gnd_min"]["pF"]+ $tuner_closed["ratio"]*($v["C_gnd_max"]["pF"]-$v["C_gnd_min"]["pF"]) +$v["C_gnd_par"]["pF"]; $C_tnk["pF"]=$v["C_tnk_min"]["pF"]+ $tuner_closed["ratio"]*($v["C_tnk_max"]["pF"]-$v["C_tnk_min"]["pF"]) +$v["C_tnk_par"]["pF"]; $C["pF"]=C_tuggle($C_ant["pF"],$C_gnd["pF"],$C_tnk["pF"]); $L["uH"]=$v["L_ant"]["uH"] + $v["L_ant_load"]["uH"] + $v["L_tnk"]["uH"]; $v["resonant_freq"]["kHz"][$tuner_closed["pct"]]=resonant_freq_kHz($L["uH"],$C["pF"]);
Toroid Set
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| Tuggle Antenna Tuner
| ........
| / /
| +--||--+--||------+
| | / | / |
| | | ---
+--UU--+--+-UUUU-+ -
= =
+-UUUU-+ +-UUUU-+
| | | Tank |
| / | | / |
+--||--+ +--||--+--------------+----+
/ | / | o
Wave | +--VV--+ | )
Trap | | | | o
+-->|--+--||--+---UUUU+UU--+
Benny = = = =
This is similar to this radio.
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|
| Tuggle Antenna Tuner
| +----------------+
| | |
| | / |
| | ||--+
+--UU--+--+--UU--------| 2x365p
= = = = / ||--+
+-UUUU-+ +-UUUU-+ |
| | | Tank | ---
| / | | / | -
+--||--+ +--||--+--||-------------+-->|--+----+
/ | / || | | |
Wave | ||--||--+ | | |
Trap | | | | |
| Hobbydyne | 27m | | |
| +--UU--+ | |
| | == | o
| | 100p | o
| +---------||--+ )
| | | o
| | | |
+-----------------+--||--+--UUUU+UU--+
| | =======
+--VV--+
Benny
These are like this radio.
This next shows how the Hobbydyne and the Benny work the DC bias on either end of the diode.
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|
| Wave Trap
| / Tuggle Antenna Tuner
| +--||-+ ........
| | / | / /
| | | +-UUUUU---||--+--||------+
| +-UUU-+ | = = = / | / |
| = = | | ---
+----U-----+--UU---------+ -
:: /
+--UU-----||--+
| / |
| |
+-UUUUU-------+---------UUUU+UU----+
| = = = | ====|== o
| | | )
| | | o
| +-UUU-+--||--+--||--+------+
Simplified | | = = | |
Hobbydyne | / | | v Benny
+--||---+----->|-----+-----VVV
/
Here is an interesting possibility…
\|/
|
| Wave Trap
| / Tuggle Antenna Tuner
| +--||-+ ........
| | / | / /
| | | +-UUUUU---||--+--||------+
| +-UUU-+ | = = = / | / |
| = = | | ---
+----U-----+--UU---------+ -
:: /
+--UU-----||--+
| / |
| |
+-UUUUU-------+
| = = = | 5 : 50 : 1 turn
| / / | 25 : 2500 : 1 mH
| ||----||---+ 400 : 40000 : 16 Ohm
+--| / |
Hobbydyne / ||--+--UUUU+UUUUUUUUU+UU-----+
| ====|=========|== o
| | | o
| +-||-+-||-+-------+
| | |
+-->|-------+---VVV
Benny
\|/
| Tuggle Antenna Tuner
| ........
| / /
| +--||--+--||------+
| | / | / |
| | | ---
+--UU--+--+-UUUU-+ -
= =
+-UUUU-+ +-UUUU-+
| | | Tank |
| / | | / |
+--||--+ +--||--+--------------+----+
/ | / | o
Wave | +--VV--+ | )
Trap | | | | o
+-->|--+--||--+---UUUU+UU--+
Benny = = = =
This is similar to this radio.
\|/
|
| Tuggle Antenna Tuner
| +----------------+
| | |
| | / |
| | ||--+
+--UU--+--+--UU--------| 2x365p
= = = = / ||--+
+-UUUU-+ +-UUUU-+ |
| | | Tank | ---
| / | | / | -
+--||--+ +--||--+--||-------------+-->|--+----+
/ | / || | | |
Wave | ||--||--+ | | |
Trap | | | | |
| Hobbydyne | 27m | | |
| +--UU--+ | |
| | == | o
| | 100p | o
| +---------||--+ )
| | | o
| | | |
+-----------------+--||--+--UUUU+UU--+
| | =======
+--VV--+
Benny
These are like this radio.
The next two are a bit off.
\|/
|
| Wave Trap
| / Tuggle Antenna Tuner
| +--||-+ ........
| | / | / /
| | | +-UUUUU---||--+--||------+
| +-UUU-+ | = = = / | / |
| = = | | ---
+----U-----+--UU---------+ -
:: /
+--UU-----||--+
| / |
| |
+-UUUUU-------+------+------+------+
| = = = | | |
| | | o
| +--||--+ | )
| | | o
| / | | |
+--||--+ +--||--+--UUUU+UU----+
Simplified | / | | | =======
Hobbydyne | | | |
+-UUU--+-->|--+-----VVV
= = Benny
Here is an interesting possibility…
\|/
|
| Wave Trap
| / Tuggle Antenna Tuner
| +--||-+ ........
| | / | / /
| | | +-UUUUU---||--+--||------+
| +-UUU-+ | = = = / | / |
| = = | | ---
+----U-----+--UU---------+ -
:: /
+--UU-----||--+-----VVV
| / | | Benny
| | |
+-UUUUU--+----+--||--+-----+
| = = = | | |
| +-||-+ | o
| / | | )
+--||--+-->|--+ | o
Simplified | / | | | |
Hobbydyne | | | | |
+--+UUU+ +UUUUUU+U+---+
===================
5 : 50 : 1 turn
25 : 2500 : 1 mH
400 : 40000 : 16 Ohm
\|/
| Tuggle Antenna Tuner
| ........
| / /
| +--||--+--||------+
| | / | / |
| | | ---
+--UU--+--+-UUUU-+ -
::::
+-UUUU-+ +-UUUU-+
| | | Tank |
| / | | / |
+--||--+ +--||--+--------------+----+
/ | / | o
Wave | +--VV--+ | )
Trap | | | | o
+-->|--+--||--+---UUUU+UU--+
Benny = = = =
This is similar to this radio.
\|/
|
| Tuggle Antenna Tuner
| +----------------+
| | |
| | / |
| | ||--+
+--UU--+--+--UU--------| 2x365p
= = = = / ||--+
+-UUUU-+ +-UUUU-+ |
| | | Tank | ---
| / | | / | -
+--||--+ +--||--+---------------------+----+
/ | / | |
Wave | 180p | |
Trap +---------||--+ | |
| 27m | | o
+--UU--+ | | )
| == | | | o
| | | | |
Simplified +--||--+-->|--+--||--+---UUUU+UU--+
Hobbydyne 10p | | =======
+--VV--+
Benny
These are like this radio.
\|/ +---+
| / |
| Tuggle Tuner o o |
+---------+-------------UU+UU+ |
| = = = |
| 220u/180u / |
| 6u8 ||--+
+--UU--------------| 2x365p
= = = = = = = / ||--+
+-UUUU-+ +--UU---------+ |
| | | 4u3 | ---
| / | | / | -
+--||--+ +-UUUUU---||--+--------------+----+
/365p | = = = /365p | |
Wave | 250u | |
Trap | | |
| 27m | o
+--UU--+ | )
| == | | o
| | u1 | |
| ||--+-->|--+--||--+---UUUU+UU--+
Hobbydyne +--| 15p | | =======
| ||--+ +--VV--+
| | | 150k
| / | | Benny
+--||--+ |
| /pt |
| 100p |
+---------||--+
Better, wind the wavetrap on the Tuggle. The smaller the inductance, the narrower the bandwidth suppressed.
\|/
| /
| +--||-+
| Wave | / |
| Trap +--||-+
| | |
| +-UUU-+
| FT50-61 = = =
+-------------UU+UU+ 220u/180u
| o o
| \ Band Select
| +---+
| |
| Tuggle / |
| 6u8 Tuner ||--+
+--UUU-------------| 2x365p
::: T50-2 / ||--+
+--UUU--------+ |
| 4u3 | ---
| / | -
+-UUUUU---||--+-------------+----+
| = = = /365p | |
| 250u | o
| 100p? 250k | )
+---------||--+-----VVV | o
| | | | |
+--||--+-->|--+--||--+--UUUU+UU--+
| 10p | u1 =======
| | Benny
+--UU--+
== Simplified
27m Hobbydyne
Could the Hobbydyne inductor be used as the primary in the audio transformer?
\|/
| /
| +--||-+
| Wave | / |
| Trap +--||-+
| | |
| +-UUU-+
| FT50-61 = = =
+-------------UU+UU+ 220u/180u
| o o
| \ Band Select
| +---+
| |
| Tuggle / |
| 6u8 Tuner ||--+
+--UUU-------------| 2x365p
::: T50-2 / ||--+
+--UUU--------+ |
| 4u3 | ---
| / | -
+-UUUUU---||--+-----------+
| = = = /365p |
| 250u |
| 100p? 250k |
+---------||--+-----VVV |
| | | |
+--||--+-->|--+--||--+----+
| 10p | u1
| | Benny
| +-?--o
| | )
+--UUUU+UU--o
=======
Simplified Hobbydyne
& Audio Transformer
(Will this work?)
May need to move the Benny, too.
\|/
| /
| +--||-+
| Wave | / |
| Trap +--||-+
| | |
| +-UUU-+
| FT50-61 = = =
+-------------UU+UU+ 220u/180u
| o o
| \ Band Select
| +---+
| |
| Tuggle / |
| 6u8 Tuner ||--+
+--UUU-------------| 2x365p
::: T50-2 / ||--+
+--UUU--------+ |
| 4u3 | ---
| / | -
+-UUUUU---||--+------+
| = = = /365p |
| 250u |
| 150p? |
+---------||--+ |
| | |
+--||--+--||--+-->|--+
| 10p | u1 |
| |Benny |
| +-----VVV
| | 250k
| +-------------o
| | )
+--UUUU+UU-----------o
=======
Simplified Hobbydyne
& Audio Transformer
(Will this work?)
The 150p? cap is redundant, and put the Benny back. Also, the wave trap probably shouldn't be coupled so strongly.
\|/
| /
| +--||--+
| | / |Wave Trap
| +--||--+
| | |
| +--UUU-+
| = = = = = FT50-61
+------U------UU+UU+ 220u/180u
| o o
| \ Band Select
| +----+
| |
| Tuggle / |
| 6u8 Tuner ||---+
+--UUU-------------| 2x365p
::: T50-2 / ||---+
+--UUU--------+ |
| 4u3 | ---
| / | -
+-UUUUU---||--+------+
| = = = /365p |
| 250u |
| 250k |
| VVV-----+
| / | Benny|
+--||--+-->|--+--||--+
| /15p | u1
| +----------------o
| | )
+--UUUU+UU--------------o
=======
Simplified Hobbydyne
& Audio Transformer
(Will this work?)
Discussion